Commit Graph

10662 Commits

Author SHA1 Message Date
sdong
12117b26a3 Fix flaky DBTest2.RateLimitedCompactionReads (#9185)
Summary:
DBTest2.RateLimitedCompactionReads sometime shows following failure:

  what():  db/db_test2.cc:3976: Failure
Expected equality of these values:
  i + 1
    Which is: 4
  NumTableFilesAtLevel(0)
    Which is: 0

The assertion itself doesn't appear to be correct. Fix it.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9185

Test Plan: Removing an assertion shouldn't break anything.

Reviewed By: ajkr

Differential Revision: D32549530

fbshipit-source-id: 9993372d8af89161f903337a13f3e316e690a6b8
2021-11-19 10:08:59 -08:00
Yanqin Jin
1e8322c0f5 Fix a bug in FlushJob picking more memtables beyond synced WALs (#9142)
Summary:
After RocksDB 6.19 and before this PR, RocksDB FlushJob may pick more memtables to flush beyond synced WALs.
This can be problematic if there are multiple column families, since it can prematurely advance the flushed column
family's log_number. Should subsequent attempts fail to sync the latest WALs and the database goes
through a recovery, it may detect corrupted WAL number below the flushed column family's log number
and complain about column family inconsistency.
To fix, we record the maximum memtable ID of the column family being flushed. Then we call SyncClosedLogs()
so that all closed WALs at the time when memtable ID is recorded will be synced.
I also disabled a unit test temporarily due to reasons described in https://github.com/facebook/rocksdb/issues/9151

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9142

Test Plan: make check

Reviewed By: ajkr

Differential Revision: D32299956

Pulled By: riversand963

fbshipit-source-id: 0da75888177d91905cf8c9d00605b73afb5970a7
2021-11-19 09:56:00 -08:00
Andrew Kryczka
8cf4294e25 Adhere to per-DB concurrency limit when bottom-pri compactions exist (#9179)
Summary:
- Fixed bug where bottom-pri manual compactions were counting towards `bg_compaction_scheduled_` instead of `bg_bottom_compaction_scheduled_`. It seems to have no negative effect.
- Fixed bug where automatic compaction scheduling did not consider `bg_bottom_compaction_scheduled_`. Now automatic compactions cannot be scheduled that exceed the per-DB compaction concurrency limit (`max_compactions`) when some existing compactions are bottommost.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9179

Test Plan: new unit test for manual/automatic. Also verified the existing automatic/automatic test ("ConcurrentBottomPriLowPriCompactions") hanged until changing it to explicitly enable concurrency.

Reviewed By: riversand963

Differential Revision: D32488048

Pulled By: ajkr

fbshipit-source-id: 20c4c0693678e81e43f85ed3cc3402fcf26e3310
2021-11-18 17:31:50 -08:00
Akanksha Mahajan
4a7c1dc375 Add listener API that notifies on IOError (#9177)
Summary:
Add a new API in listener.h that notifies about IOErrors on
Read/Write/Append/Flush etc. The API reports about IOStatus, filename, Operation
name, offset and length.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9177

Test Plan: Added new unit tests

Reviewed By: anand1976

Differential Revision: D32470627

Pulled By: akankshamahajan15

fbshipit-source-id: 189a717033590ae227b3beae8b1e7e185e4cdc12
2021-11-18 17:11:19 -08:00
Adam Retter
d94932323a Check that newIteratorWithBase regardless of WBWI Overwrite Mode (#8134)
Summary:
The behaviour of WBWI has changed when calling newIteratorWithBase when overwrite is set to true or false. This PR simply adds tests to assert the new correct behaviour.

Closes https://github.com/facebook/rocksdb/issues/7370
Closes https://github.com/facebook/rocksdb/pull/8134

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9107

Reviewed By: pdillinger

Differential Revision: D32099475

Pulled By: mrambacher

fbshipit-source-id: 245f483f73db866cc8a51219a2bff2e09e59faa0
2021-11-18 11:53:09 -08:00
Peter Dillinger
230660be73 Improve / clean up meta block code & integrity (#9163)
Summary:
* Checksums are now checked on meta blocks unless specifically
suppressed or not applicable (e.g. plain table). (Was other way around.)
This means a number of cases that were not checking checksums now are,
including direct read TableProperties in Version::GetTableProperties
(fixed in meta_blocks ReadTableProperties), reading any block from
PersistentCache (fixed in BlockFetcher), read TableProperties in
SstFileDumper (ldb/sst_dump/BackupEngine) before table reader open,
maybe more.
* For that to work, I moved the global_seqno+TableProperties checksum
logic to the shared table/ code, because that is used by many utilies
such as SstFileDumper.
* Also for that to work, we have to know when we're dealing with a block
that has a checksum (trailer), so added that capability to Footer based
on magic number, and from there BlockFetcher.
* Knowledge of trailer presence has also fixed a problem where other
table formats were reading blocks including bytes for a non-existant
trailer--and awkwardly kind-of not using them, e.g. no shared code
checking checksums. (BlockFetcher compression type was populated
incorrectly.) Now we only read what is needed.
* Minimized code duplication and differing/incompatible/awkward
abstractions in meta_blocks.{cc,h} (e.g. SeekTo in metaindex block
without parsing block handle)
* Moved some meta block handling code from table_properties*.*
* Moved some code specific to block-based table from shared table/ code
to BlockBasedTable class. The checksum stuff means we can't completely
separate it, but things that don't need to be in shared table/ code
should not be.
* Use unique_ptr rather than raw ptr in more places. (Note: you can
std::move from unique_ptr to shared_ptr.)

Without enhancements to GetPropertiesOfAllTablesTest (see below),
net reduction of roughly 100 lines of code.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9163

Test Plan:
existing tests and
* Enhanced DBTablePropertiesTest.GetPropertiesOfAllTablesTest to verify that
checksums are now checked on direct read of table properties by TableCache
(new test would fail before this change)
* Also enhanced DBTablePropertiesTest.GetPropertiesOfAllTablesTest to test
putting table properties under old meta name
* Also generally enhanced that same test to actually test what it was
supposed to be testing already, by kicking things out of table cache when
we don't want them there.

Reviewed By: ajkr, mrambacher

Differential Revision: D32514757

Pulled By: pdillinger

fbshipit-source-id: 507964b9311d186ae8d1131182290cbd97a99fa9
2021-11-18 11:43:44 -08:00
Zhichao Cao
f4294669e0 Fix the analyzer test failure caused by inaccurate timing wait (#9181)
Summary:
Fix the analyzer test failure caused by inaccurate timing wait. The wait time at different system might be different or cause the delay, now we do not accurately count the lines. Only in a very rare extreme case, test will ignore the part exceed the timing of 1 second.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9181

Test Plan: make check

Reviewed By: pdillinger

Differential Revision: D32511319

Pulled By: zhichao-cao

fbshipit-source-id: e694c8cb465c750cfa5a43dab3eff6707b9a11c8
2021-11-18 11:28:38 -08:00
Hui Xiao
74544d582f Account Bloom/Ribbon filter construction memory in global memory limit (#9073)
Summary:
Note: This PR is the 4th part of a bigger PR stack (https://github.com/facebook/rocksdb/pull/9073) and will rebase/merge only after the first three PRs (https://github.com/facebook/rocksdb/pull/9070, https://github.com/facebook/rocksdb/pull/9071, https://github.com/facebook/rocksdb/pull/9130) merge.

**Context:**
Similar to https://github.com/facebook/rocksdb/pull/8428, this PR is to track memory usage during (new) Bloom Filter (i.e,FastLocalBloom) and Ribbon Filter (i.e, Ribbon128) construction, moving toward the goal of [single global memory limit using block cache capacity](https://github.com/facebook/rocksdb/wiki/Projects-Being-Developed#improving-memory-efficiency). It also constrains the size of the banding portion of Ribbon Filter during construction by falling back to Bloom Filter if that banding is, at some point, larger than the available space in the cache under `LRUCacheOptions::strict_capacity_limit=true`.

The option to turn on this feature is `BlockBasedTableOptions::reserve_table_builder_memory = true` which by default is set to `false`. We [decided](https://github.com/facebook/rocksdb/pull/9073#discussion_r741548409) not to have separate option for separate memory user in table building therefore their memory accounting are all bundled under one general option.

**Summary:**
- Reserved/released cache for creation/destruction of three main memory users with the passed-in `FilterBuildingContext::cache_res_mgr` during filter construction:
   - hash entries (i.e`hash_entries`.size(), we bucket-charge hash entries during insertion for performance),
   - banding (Ribbon Filter only, `bytes_coeff_rows` +`bytes_result_rows` + `bytes_backtrack`),
   - final filter (i.e, `mutable_buf`'s size).
      - Implementation details: in order to use `CacheReservationManager::CacheReservationHandle` to account final filter's memory, we have to store the `CacheReservationManager` object and `CacheReservationHandle` for final filter in `XXPH3BitsFilterBuilder` as well as  explicitly delete the filter bits builder when done with the final filter in block based table.
- Added option fo run `filter_bench` with this memory reservation feature

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9073

Test Plan:
- Added new tests in `db_bloom_filter_test` to verify filter construction peak cache reservation under combination of  `BlockBasedTable::Rep::FilterType` (e.g, `kFullFilter`, `kPartitionedFilter`), `BloomFilterPolicy::Mode`(e.g, `kFastLocalBloom`, `kStandard128Ribbon`, `kDeprecatedBlock`) and `BlockBasedTableOptions::reserve_table_builder_memory`
  - To address the concern for slow test: tests with memory reservation under `kFullFilter` + `kStandard128Ribbon` and `kPartitionedFilter` take around **3000 - 6000 ms** and others take around **1500 - 2000 ms**, in total adding **20000 - 25000 ms** to the test suit running locally
- Added new test in `bloom_test` to verify Ribbon Filter fallback on large banding in FullFilter
- Added test in `filter_bench` to verify that this feature does not significantly slow down Bloom/Ribbon Filter construction speed. Local result averaged over **20** run as below:
   - FastLocalBloom
      - baseline `./filter_bench -impl=2 -quick -runs 20 | grep 'Build avg'`:
         - **Build avg ns/key: 29.56295** (DEBUG_LEVEL=1), **29.98153** (DEBUG_LEVEL=0)
      - new feature (expected to be similar as above)`./filter_bench -impl=2 -quick -runs 20 -reserve_table_builder_memory=true | grep 'Build avg'`:
         - **Build avg ns/key: 30.99046** (DEBUG_LEVEL=1), **30.48867** (DEBUG_LEVEL=0)
      - new feature of RibbonFilter with fallback  (expected to be similar as above) `./filter_bench -impl=2 -quick -runs 20 -reserve_table_builder_memory=true -strict_capacity_limit=true | grep 'Build avg'` :
         - **Build avg ns/key: 31.146975** (DEBUG_LEVEL=1), **30.08165** (DEBUG_LEVEL=0)

    - Ribbon128
       - baseline `./filter_bench -impl=3 -quick -runs 20 | grep 'Build avg'`:
           - **Build avg ns/key: 129.17585** (DEBUG_LEVEL=1), **130.5225** (DEBUG_LEVEL=0)
       - new feature  (expected to be similar as above) `./filter_bench -impl=3 -quick -runs 20 -reserve_table_builder_memory=true | grep 'Build avg' `:
           - **Build avg ns/key: 131.61645** (DEBUG_LEVEL=1), **132.98075** (DEBUG_LEVEL=0)
       - new feature of RibbonFilter with fallback (expected to be a lot faster than above due to fallback) `./filter_bench -impl=3 -quick -runs 20 -reserve_table_builder_memory=true -strict_capacity_limit=true | grep 'Build avg'` :
          - **Build avg ns/key: 52.032965** (DEBUG_LEVEL=1), **52.597825** (DEBUG_LEVEL=0)
          - And the warning message of `"Cache reservation for Ribbon filter banding failed due to cache full"` is indeed logged to console.

Reviewed By: pdillinger

Differential Revision: D31991348

Pulled By: hx235

fbshipit-source-id: 9336b2c60f44d530063da518ceaf56dac5f9df8e
2021-11-18 09:42:20 -08:00
Peter Dillinger
4f678b52e7 Don't allow parallel crash_test in Makefile (#9180)
Summary:
Using deps for running blackbox and whitebox allows them to be
parallelized, which doesn't seem to be working well.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9180

Test Plan: make -j24 crash_test

Reviewed By: siying

Differential Revision: D32500851

Pulled By: pdillinger

fbshipit-source-id: 364288c8d023b93e7ca2724ea40edae2f4eb0407
2021-11-17 11:19:48 -08:00
Davide Angelocola
c9539ede76 Fix integer overflow in TraceOptions (#9157)
Summary:
Hello from a happy user of rocksdb java :-)

Default constructor of TraceOptions is supposed to initialize size to 64GB but the expression contains an integer overflow.

Simple test case with JShell:
```
jshell> 64 * 1024 * 1024 * 1024
$1 ==> 0

jshell> 64L * 1024 * 1024 * 1024
$2 ==> 68719476736
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9157

Reviewed By: pdillinger, zhichao-cao

Differential Revision: D32369273

Pulled By: mrambacher

fbshipit-source-id: 6a0c95fff7a91f27ff15d65b662c6b101756b450
2021-11-17 08:41:48 -08:00
Andrew Kryczka
2225f063d4 Remove incremental ID from background thread pool names (#9165)
Summary:
`pthread_setname_np()` fails on attempts to assign oversized names like
"rocksdb:bottom10", which resulted in some thread name updates being
lost. We do not need the ID suffix so I removed it.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9165

Test Plan:
```
$ TEST_TMPDIR=/dev/shm ./db_bench -benchmarks=fillrandom -max_background_flushes=123 -max_background_compactions=456 -num_bottom_pri_threads=789 -duration=60
```

While above is running:
```
$ ps -o 'comm' -Lp `pidof db_bench` | grep '^rocksdb:' | sort | uniq -c
    789 rocksdb:bottom
    123 rocksdb:high
    456 rocksdb:low
```

Reviewed By: pdillinger

Differential Revision: D32415077

Pulled By: ajkr

fbshipit-source-id: a0e013101e26a78bc5eca73509293ef4bf22254f
2021-11-16 18:26:12 -08:00
Peter Dillinger
d95ffbaf4f Parallelize sandcastle tests (#9178)
Summary:
Some tests are timing out, so increase parallelism but also
keep test output on console

Large credit to jay-zhuang who is currently unavailable to revise & land https://github.com/facebook/rocksdb/issues/9135

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9178

Test Plan:
make check and valgrind_test, with and without PRINT_PARALLEL_OUTPUTS=1
https://www.internalfb.com/intern/sandcastle/group/nonce/6211105410048528/

Reviewed By: riversand963

Differential Revision: D32476680

Pulled By: pdillinger

fbshipit-source-id: 8844947416e5baf4435e1ef6e33aeecc45621a89
2021-11-16 16:45:13 -08:00
Zhichao Cao
b694cd0e0d Add tiered storage related read bytes stats to Statistic (#9123)
Summary:
Add the 3 read bytes counter to the Statistic, which will be used by storage tiering and get the information for files with different temperature.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9123

Test Plan: added new testing cases.

Reviewed By: siying

Differential Revision: D32154745

Pulled By: zhichao-cao

fbshipit-source-id: b7905d6dae469a72428742364ec07b634b6f15da
2021-11-16 15:17:17 -08:00
Sahir Hoda
1178d348aa Fix portable mac shared_library ld flags (#9149)
Summary:
Move the 'macosx-version-min' arg to the front of PLATFORM_SHARED_LDFLAGS so that it doesn't get concatenated with the library name. Fixes https://github.com/facebook/rocksdb/issues/9146

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9149

Reviewed By: mrambacher

Differential Revision: D32396101

Pulled By: pdillinger

fbshipit-source-id: aefcf53384e64d399049f158779acc3a4e54a8fe
2021-11-16 12:17:17 -08:00
Peter Dillinger
f8c685c4fc Check for and disallow shared key space in block caches (#9172)
Summary:
We have three layers of block cache that often use the same key
but map to different physical data:
* BlockBasedTableOptions::block_cache
* BlockBasedTableOptions::block_cache_compressed
* BlockBasedTableOptions::persistent_cache

If any two of these happen to share an underlying implementation and key
space (insertion into one shows up in another), then memory safety is
broken. The simplest case is block_cache == block_cache_compressed.
(Credit mrambacher for asking about this case in a review.)

With this change, we explicitly check for overlap and preemptively and
safely fail with a Status code.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9172

Test Plan: test added. Crashes without new check

Reviewed By: anand1976

Differential Revision: D32465659

Pulled By: pdillinger

fbshipit-source-id: 3876b45b6dce6167e5a7a642725ddc86b96f8e40
2021-11-16 11:16:05 -08:00
Adam Simpkins
28f54e71f3 fix compile errors in db/kv_checksum.h (#9173)
Summary:
When defining a template class, the constructor should be specified
simply using the class name; it does not take template arguments.a

Apparently older versions of gcc and clang did not complain about this
syntax, but gcc 11.x and recent versions of clang both complain about
this file.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9173

Test Plan:
When building with platform010 I got compile errors in this file both
in `mode/dev` (clang) and in `mode/opt-gcc`.  This diff fixes the
compile failures.

Reviewed By: ajkr

Differential Revision: D32455881

Pulled By: simpkins

fbshipit-source-id: 0682910d9e2cdade94ce1e77973d47ac04d9f7e2
2021-11-16 10:20:50 -08:00
Peter Dillinger
230f18b6e1 Improve parallel test suite runner (#9160)
Summary:
* Parallel `make check` would pass if a test binary failed to list gtest
tests. This is now likely to report as a failure.
* Crazy perl was generating some extra incorrect test names causing
extra files and binary invocations. Fixed with cleaner awk.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9160

Test Plan:
For first part, add an 'assert(false);' to start of hash_test main and
see 'make check' pass before, and fail after.

For second part, inspect t/ directory before vs. after. Number of
executed tests is same:

    $ cat log* | grep 'PASSED.*test' | awk '{ tot += $4; } END { print tot; }'
    10469

Reviewed By: ajkr

Differential Revision: D32372006

Pulled By: pdillinger

fbshipit-source-id: 185b3db2b67e3f9198eb75322e4d0493e4fc1beb
2021-11-16 09:59:21 -08:00
Hui Xiao
cff7819dff Fix BackupEngine's internal callers of GenericRateLimiter::Request() not honoring bytes <= GetSingleBurstBytes() (#9063)
Summary:
**Context:**
Some existing internal calls of `GenericRateLimiter::Request()` in backupable_db.cc and newly added internal calls in https://github.com/facebook/rocksdb/pull/8722/ do not make sure `bytes <= GetSingleBurstBytes()` as required by rate_limiter https://github.com/facebook/rocksdb/blob/master/include/rocksdb/rate_limiter.h#L47.

**Impacts of this bug include:**
(1) In debug build, when `GenericRateLimiter::Request()` requests bytes greater than `GenericRateLimiter:: kMinRefillBytesPerPeriod = 100` byte, process will crash due to assertion failure. See https://github.com/facebook/rocksdb/pull/9063#discussion_r737034133 and for possible scenario
(2) In production build, although there will not be the above crash due to disabled assertion, the bug can lead to a request of small bytes being blocked for a long time by a request of same priority with insanely large bytes from a different thread. See updated https://github.com/facebook/rocksdb/wiki/Rate-Limiter ("Notice that although....the maximum bytes that can be granted in a single request have to be bounded...") for more info.

There is an on-going effort to move rate-limiting to file wrapper level so rate limiting in `BackupEngine` and this PR might be made obsolete in the future.

**Summary:**
- Implemented loop-calling `GenericRateLimiter::Request()` with `bytes <= GetSingleBurstBytes()` as a static private helper function `BackupEngineImpl::LoopRateLimitRequestHelper`
   -- Considering make this a util function in `RateLimiter` later or do something with `RateLimiter::RequestToken()`
- Replaced buggy internal callers with this helper function wherever requested byte is not pre-limited by `GetSingleBurstBytes()`
- Removed the minimum refill bytes per period enforced by `GenericRateLimiter` since it is useless and prevents testing `GenericRateLimiter` for extreme case with small refill bytes per period.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9063

Test Plan:
- Added a new test that failed the assertion before this change and now passes
  - It exposed bugs in [the write during creation in `CopyOrCreateFile()`](df7cc66e17/utilities/backupable/backupable_db.cc (L2034-L2043)), [the read of table properties in `GetFileDbIdentities()`](df7cc66e17/utilities/backupable/backupable_db.cc (L2372-L2378)), [some read of metadata in `BackupMeta::LoadFromFile()`](df7cc66e17/utilities/backupable/backupable_db.cc (L2726))
- Passing Existing tests

Reviewed By: ajkr

Differential Revision: D31824535

Pulled By: hx235

fbshipit-source-id: d2b3dea7a64e2a4b1e6a59fca322f0800a4fcbcc
2021-11-16 09:52:16 -08:00
Yanqin Jin
2035798834 Update TransactionUtil::CheckKeyForConflict to also use timestamps (#9162)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9162

Existing TransactionUtil::CheckKeyForConflict() performs only seq-based
conflict checking. If user-defined timestamp is enabled, it should perform
conflict checking based on timestamps too.

Update TransactionUtil::CheckKey-related methods to verify the timestamp of the
latest version of a key is smaller than the read timestamp. Note that
CheckKeysForConflict() is not updated since it's used only by optimistic
transaction, and we do not plan to update it in this upcoming batch of diffs.

Existing GetLatestSequenceForKey() returns the sequence of the latest
version of a specific user key. Since we support user-defined timestamp, we
need to update this method to also return the timestamp (if enabled) of the
latest version of the key. This will be needed for snapshot validation.

Reviewed By: ltamasi

Differential Revision: D31567960

fbshipit-source-id: 2e4a14aed267435a9aa91bc632d2411c01946d44
2021-11-15 12:52:18 -08:00
Andrew Kryczka
9bb13c56b3 Use system-wide thread ID in info log lines (#9164)
Summary:
This makes it easier to debug with tools like `ps`. The change only
applies to builds with glibc 2.30+ and _GNU_SOURCE extensions enabled.
We could adopt it in more cases by using the syscall but this is enough
for our build.

Replaces https://github.com/facebook/rocksdb/issues/2973.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9164

Test Plan:
- ran some benchmarks and correlated logged thread IDs with those shown by `ps -L`.
- verified no noticeable regression in throughput for log heavy (more than 700k log lines and over 5k / second) scenario.

Benchmark command:

```
$ TEST_TMPDIR=/dev/shm ./db_bench -benchmarks=filluniquerandom -compression_type=none -max_bytes_for_level_multiplier=2 -write_buffer_size=262144 -num_levels=7 -max_bytes_for_level_base=2097152 -target_file_size_base=524288 -level_compaction_dynamic_level_bytes=true -max_background_jobs=12 -num=20000000
```

Results before: 15.9MB/s, 15.8MB/s, 16.0MB/s
Results after: 16.3MB/s, 16.3MB/s, 15.8MB/s

- Rely on CI to test the fallback behavior

Reviewed By: riversand963

Differential Revision: D32399660

Pulled By: ajkr

fbshipit-source-id: c24d44fdf7782faa616ef0a0964eaca3539d9c24
2021-11-12 19:46:06 -08:00
Andrew Kryczka
3295e9f640 Clarify max_write_buffer_size_to_maintain (#9154)
Summary:
I was unable to figure out the behavior by reading the old doc so attempted to
write it differently.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9154

Reviewed By: riversand963

Differential Revision: D32338843

Pulled By: ajkr

fbshipit-source-id: e1e67720cd92572b195583e5ea2c592180d4fefd
2021-11-12 19:31:03 -08:00
anand76
8689936310 Fix backward compatibility breakage in FileSystemWrapper (#9156)
Summary:
Implement the Name() method in FileSystemWrapper, since https://github.com/facebook/rocksdb/issues/8649 removed it and it can cause compilation failures. We can deprecate it in RocksDB 7.0.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9156

Reviewed By: riversand963

Differential Revision: D32363977

Pulled By: anand1976

fbshipit-source-id: 1e5a2fec2ab0649255720d89abf5bac26bb64ded
2021-11-11 17:59:18 -08:00
Akanksha Mahajan
17ce1ca48b Reuse internal auto readhead_size at each Level (expect L0) for Iterations (#9056)
Summary:
RocksDB does auto-readahead for iterators on noticing more than two sequential reads for a table file if user doesn't provide readahead_size. The readahead starts at 8KB and doubles on every additional read up to max_auto_readahead_size. However at each level, if iterator moves over next file, readahead_size starts again from 8KB.

This PR introduces a new ReadOption "adaptive_readahead" which when set true will maintain readahead_size  at each level. So when iterator moves from one file to another, new file's readahead_size will continue from previous file's readahead_size instead of scratch. However if reads are not sequential it will fall back to 8KB (default) with no prefetching for that block.

1. If block is found in cache but it was eligible for prefetch (block wasn't in Rocksdb's prefetch buffer),  readahead_size will decrease by 8KB.
2. It maintains readahead_size for L1 - Ln levels.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9056

Test Plan:
Added new unit tests
Ran db_bench for "readseq, seekrandom, seekrandomwhilewriting, readrandom" with --adaptive_readahead=true and there was no regression if new feature is enabled.

Reviewed By: anand1976

Differential Revision: D31773640

Pulled By: akankshamahajan15

fbshipit-source-id: 7332d16258b846ae5cea773009195a5af58f8f98
2021-11-10 16:20:04 -08:00
Ikko Ashimine
afcd32533c Fix typo in env_win.h (#9138)
Summary:
overide -> override

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9138

Reviewed By: jay-zhuang

Differential Revision: D32245235

Pulled By: mrambacher

fbshipit-source-id: bed62b843925bed806c06ca3485d33bb45a56dc7
2021-11-10 12:22:21 -08:00
slk
937fbcbddc Track per-SST user-defined timestamp information in MANIFEST (#9092)
Summary:
Track per-SST user-defined timestamp information in MANIFEST https://github.com/facebook/rocksdb/issues/8957

Rockdb has supported user-defined timestamp feature. Application can specify a timestamp
when writing each k-v pair. When data flush from memory to disk file called SST files, file
creation activity will commit to MANIFEST. This commit is for tracking timestamp info in the
MANIFEST for each file. The changes involved are as follows:
1) Track max/min timestamp in FileMetaData, and fix invoved codes.
2) Add NewFileCustomTag::kMinTimestamp and NewFileCustomTag::kMinTimestamp in
    NewFileCustomTag ( in the kNewFile4 part ), and support invoved codes such as
    VersionEdit Encode and Decode etc.
3) Add unit test code for VersionEdit EncodeDecodeNewFile4, and fix invoved test codes.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9092

Reviewed By: ajkr, akankshamahajan15

Differential Revision: D32252323

Pulled By: riversand963

fbshipit-source-id: d2642898d6e3ad1fef0eb866b98045408bd4e162
2021-11-10 10:49:04 -08:00
Adam Retter
1a8eec461b Remove invalid RocksJava native entry (#9147)
Summary:
It seems that an incorrect native source file entry was introduced in https://github.com/facebook/rocksdb/pull/8999. For some reason it appears that CI was not run against that PR, and so the problem was not detected.

This PR fixes the problem by removing the invalid entry, allowing RocksJava to build correctly again.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9147

Reviewed By: pdillinger

Differential Revision: D32300976

fbshipit-source-id: dbd763b806bacf0fc08f4deaf07c63d0a266c4cf
2021-11-09 17:21:58 -08:00
Adam Retter
fc93553e6d Fix an error on GCC 4.8.5 where -Werror=unused-parameter fails (#9144)
Summary:
Before this fix compilation with GCC 4.8.5 20150623 (Red Hat 4.8.5-36) would fail with the following error:
```
CC       jls/db/db_impl/db_impl.o
In file included from ./env/file_system_tracer.h:8:0,
                 from ./file/random_access_file_reader.h:15,
                 from ./file/file_prefetch_buffer.h:15,
                 from ./table/format.h:13,
                 from ./table/internal_iterator.h:14,
                 from ./db/pinned_iterators_manager.h:12,
                 from ./db/range_tombstone_fragmenter.h:15,
                 from ./db/memtable.h:22,
                 from ./db/memtable_list.h:16,
                 from ./db/column_family.h:17,
                 from ./db/db_impl/db_impl.h:22,
                 from db/db_impl/db_impl.cc:9:
./include/rocksdb/file_system.h:108:8: error: unused parameter 'opts'
[-Werror=unused-parameter]
 struct FileOptions : EnvOptions {
        ^
db/db_impl/db_impl.cc: In member function 'virtual rocksdb::Status
rocksdb::DBImpl::SetDBOptions(const
std::unordered_map<std::basic_string<char>, std::basic_string<char>
>&)':
db/db_impl/db_impl.cc:1230:36: note: synthesized method
'rocksdb::FileOptions& rocksdb::FileOptions::operator=(const
rocksdb::FileOptions&)' first required here
       file_options_for_compaction_ = FileOptions(new_db_options);
                                    ^
  CC       jls/db/db_impl/db_impl_compaction_flush.o
cc1plus: all warnings being treated as errors
make[1]: *** [jls/db/db_impl/db_impl.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory `/rocksdb-local-build'
make: *** [rocksdbjavastatic] Error 2
Makefile:2222: recipe for target 'rocksdbjavastaticdockerarm64v8' failed
make: *** [rocksdbjavastaticdockerarm64v8] Error 2
```

This was detected on both ppc64le and arm64v8, however it does not seem to appear in the same GCC 4.8 version we use for x64 in CircleCI - https://app.circleci.com/pipelines/github/facebook/rocksdb/9691/workflows/c2a94367-14f3-4039-be95-325c34643d41/jobs/227906

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9144

Reviewed By: riversand963

Differential Revision: D32290770

fbshipit-source-id: c90a54ba2a618e1ff3660fff3f3368ab36c3c527
2021-11-09 17:07:03 -08:00
Yanqin Jin
a113cecfc9 Fix a bug in timestamp-related GC (#9116)
Summary:
For multiple versions (ts + seq) of the same user key, if they cross the boundary of `full_history_ts_low_`,
we should retain the version that is visible to the `full_history_ts_low_`. Namely, we keep the internal key
with the largest timestamp smaller than `full_history_ts_low`.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9116

Test Plan: make check

Reviewed By: ltamasi

Differential Revision: D32261514

Pulled By: riversand963

fbshipit-source-id: e10f47c254c04c05261440051e4f50cb7d95474e
2021-11-09 13:08:55 -08:00
Hui Xiao
2fbe32b0c1 RAII support for per cache reservation through handle (#9130)
Summary:
Note: This PR is the 3rd PR of a bigger PR stack (https://github.com/facebook/rocksdb/issues/9073) and depends on the second PR (https://github.com/facebook/rocksdb/pull/9071). **See changes from this PR only 00447324d0**

Context:
pdillinger brought up a good [point](https://github.com/facebook/rocksdb/pull/9073#discussion_r741478309) about lacking RAII support for per cache reservation in `CacheReservationManager`  when reviewing https://github.com/facebook/rocksdb/pull/9073.

To summarize the discussion, the current API `CacheReservationManager::UpdateCacheReservation()` requires callers to explicitly calculate and pass in a correct`new_mem_used` to release a cache reservation (if they don't want to rely on the clean-up during `CacheReservationManager`'s destruction - such as they want to release it earlier).

While this implementation has convenience in some use-case such as `WriteBufferManager`, where [reservation](https://github.com/facebook/rocksdb/blob/main/memtable/write_buffer_manager.cc#L69-L91) and [release](https://github.com/facebook/rocksdb/blob/main/memtable/write_buffer_manager.cc#L109-L129) amounts do not necessarily correspond symmetrically and thus a flexible `new_mem_used` inputing is needed, it can be prone to caller's calculation error as well as cause a mass of codes in releasing cache in other use-case such as filter construction, where reservation and release amounts do correspond symmetrically and many code paths requiring a cache release, as [pointed](https://github.com/facebook/rocksdb/pull/9073#discussion_r741478309) out by pdillinger.

Therefore we decided to provide a new API in `CacheReservationManager` to update reservation with better RAII support for per cache reservation, using a handle to manage the life time of that particular cache reservation.
- Added a new class `CacheReservationHandle`
- Added a new API `CacheReservationManager::MakeCacheReservation()` that outputs a `CacheReservationHandle` for managing the reservation
- Updated class comments to clarify two different cache reservation methods

Tests:
- Passing new tests

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9130

Reviewed By: pdillinger

Differential Revision: D32199446

Pulled By: hx235

fbshipit-source-id: 1cba7c636e5ecfb55b0c1e0c2d218cc9b5b30b4e
2021-11-09 12:06:28 -08:00
Hui Xiao
ffd6085e1f Add new API CacheReservationManager::GetTotalMemoryUsage() (#9071)
Summary:
Note: This PR is the 2nd PR of a bigger PR stack (https://github.com/facebook/rocksdb/pull/9073).

Context:
`CacheReservationManager::UpdateCacheReservation(std::size_t new_memory_used)` accepts an accumulated total memory used (e.g, used 10MB so far) instead of usage change (e.g, increase by 5 MB, decrease by 5 MB). It has benefits including consolidating API for increase and decrease as described in https://github.com/facebook/rocksdb/pull/8506.

However, not every `CacheReservationManager` user keeps track of this accumulated total memory usage. For example, Bloom/Ribbon Filter construction (e.g, [here](822d729fcd/table/block_based/filter_policy.cc (L587)) in https://github.com/facebook/rocksdb/pull/9073) does not  while WriteBufferManager and compression dictionary buffering do.

Considering future users might or might not keep track of this counter and implementing this counter within `CacheReservationManager` is easy due to the passed-in `std::size_t new_memory_used` in calling `CacheReservationManager::UpdateCacheReservation(std::size_t new_memory_used)`, it is proposed to add a new API `CacheReservationManager::GetTotalMemoryUsage()`.

As noted in the API comments,   since `CacheReservationManager` is NOT thread-safe, external synchronization is
 needed in calling `UpdateCacheReservation()` if you want `GetTotalMemoryUsed()` returns the indeed latest memory used.
- Added and updated private counter `memory_used_` every time `CacheReservationManager::UpdateCacheReservation(std::size_t new_memory_used)` is called regardless if the call returns non-okay status
- Added `CacheReservationManager::GetTotalMemoryUsage()` to return `memory_used_`

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9071

Test Plan:
- Passing new tests
- Passing existing tests

Reviewed By: ajkr

Differential Revision: D31887813

Pulled By: hx235

fbshipit-source-id: 9a09f0c8683822673260362894c878b61ee60ceb
2021-11-09 08:17:03 -08:00
Zhichao Cao
efaef9b40a cleanup error_handler related code (#9098)
Summary:
Remove code not in use, add comments, remove redundant code.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9098

Test Plan: make check

Reviewed By: anand1976

Differential Revision: D32027219

Pulled By: zhichao-cao

fbshipit-source-id: 253aae926c87726268af6c027bf805dc9156c8a8
2021-11-08 15:49:17 -08:00
jsteemann
a7478070f3 Fix small issues (#5896)
Summary:
The individual commits in this PR should be self-explanatory.
All small and _very_ low-priority changes.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/5896

Reviewed By: riversand963

Differential Revision: D18065108

Pulled By: mrambacher

fbshipit-source-id: 236b1a1d9d21f982cc08aa67027108dde5eaf280
2021-11-08 12:32:38 -08:00
anand76
dddb791c18 Enable a few unit tests to use custom Env objects (#9087)
Summary:
Allow compaction_job_test, db_io_failure_test, dbformat_test, deletefile_test, and fault_injection_test to use a custom Env object. Also move ```RegisterCustomObjects``` declaration to a header file to simplify things.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9087

Test Plan: Run manually using "buck test rocksdb/src:compaction_job_test_fbcode" etc.

Reviewed By: riversand963

Differential Revision: D32007222

Pulled By: anand1976

fbshipit-source-id: 99af58559e25bf61563dfa95dc46e31fa7375792
2021-11-08 11:05:59 -08:00
anand76
78556c14dd Secondary cache error injection (#9002)
Summary:
Implement secondary cache error injection in db_stress.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9002

Reviewed By: zhichao-cao

Differential Revision: D31874896

Pulled By: anand1976

fbshipit-source-id: 8cf04c061a4a44efa0fe88423d05cade67b85f73
2021-11-08 10:27:27 -08:00
Alan Paxton
e5b34f5867 Fb 5789 max total WAL size clarification (#9108)
Summary:
Add clarification/extension to comments on max_total_wal_size and the Java wrapper MaxTotalWalSize to better explain the effect of the option on log file sizes.

Closes https://github.com/facebook/rocksdb/issues/5789

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9108

Reviewed By: pdillinger

Differential Revision: D32066640

Pulled By: mrambacher

fbshipit-source-id: 7d5affc87e4119019054af9c884a2ea01d68f5b7
2021-11-08 08:54:37 -08:00
Adam Retter
be351f4754 Restore Java 7 Compatibility (#9103)
Summary:
RocksDB should still compile on Java 7.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9103

Reviewed By: pdillinger

Differential Revision: D32067561

Pulled By: mrambacher

fbshipit-source-id: bbe9c18c8007ab3e113de4add56a84c9bde61c8e
2021-11-08 08:21:02 -08:00
Yanqin Jin
8ef5b9ddfe Update MySQLStyleTransactionTest to use SingleDelete (#9062)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9062

Real MySQL-style transactions in MyRocks uses SingleDelete, which is
missing in our existint MySQLStyleTransactionTest. Ths diff by lth fills the
gap in test coverage.

Reviewed By: lth

Differential Revision: D31813015

fbshipit-source-id: 196ad761de30ae9ea1f92257058dfc265f211892
2021-11-07 06:41:12 -08:00
Dennis Maisenbacher
9e788be4b7 Source files dependencies detection for RocksDB plugins. (#9120)
Summary:
Otherwise a rebuild is not done if a RocksDB plugin header file is
changed.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9120

Test Plan:
Build RocksDB with a plugin.
Change a header file of the RocksDB plugin and rebuild.

Signed-off-by: Dennis Maisenbacher <dennis.maisenbacher@wdc.com>

Reviewed By: riversand963

Differential Revision: D32223303

Pulled By: ajkr

fbshipit-source-id: 76d31b10fe915906edc181c7b6398a09b7d079ee
2021-11-06 11:50:17 -07:00
Jay Zhuang
5aad38f262 Deflake DBBasicTestWithTimestampCompressionSettings.PutAndGetWithComp… (#9136)
Summary:
…action
```
db/db_with_timestamp_basic_test.cc:2643: Failure
db_->CompactFiles(compact_opt, handles_[cf], collector->GetFlushedFiles(), static_cast<int>(kNumTimestamps - i))
Invalid argument: A compaction must contain at least one file.
```
Able to be reproduced by run multiple test in parallel.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9136

Test Plan:
```
gtest-parallel ./db_with_timestamp_basic_test --gtest_filter=Timestamp/DBBasicTestWithTimestampCompressionSettings.PutAndGetWithCompaction/12 -r 100 -w 100
```

Reviewed By: riversand963

Differential Revision: D32197734

Pulled By: jay-zhuang

fbshipit-source-id: aeb0d6e9b37312f577e203ca81bb7a0f14d4e7ce
2021-11-05 17:57:50 -07:00
Levi Tamasi
3fbddb1d27 Refactor and unify blob file saving and the logic that finds the oldest live blob file (#9122)
Summary:
The patch refactors and unifies the logic in `VersionBuilder::SaveBlobFilesTo`
and `VersionBuilder::GetMinOldestBlobFileNumber` by introducing a generic
helper that can "merge" the list of `BlobFileMetaData` in the base version with
the list of `MutableBlobFileMetaData` representing the updated state after
applying a sequence of `VersionEdit`s. This serves as groundwork for subsequent
changes that will enable us to determine whether a blob file is live after applying
a sequence of edits without calling `VersionBuilder::SaveTo`.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9122

Test Plan: `make check`

Reviewed By: riversand963

Differential Revision: D32151472

Pulled By: ltamasi

fbshipit-source-id: 11622b475866de823334b8bc21b0e99d913af97e
2021-11-05 16:50:52 -07:00
Hui Xiao
3018a3e27e Minor improvement to CacheReservationManager/WriteBufferManager/CompressionDictBuilding (#9139)
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/9139

Reviewed By: zhichao-cao

Differential Revision: D32211415

Pulled By: hx235

fbshipit-source-id: 39ce036ba34e1fb4a1992a33ac6904a4a943301d
2021-11-05 16:13:47 -07:00
Yanqin Jin
5237b39d2e Fix assertion error during compaction with write-prepared txn enabled (#9105)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9105

The user contract of SingleDelete is that: a SingleDelete can only be issued to
a key that exists and has NOT been updated. For example, application can insert
one key `key`, and uses a SingleDelete to delete it in the future. The `key`
cannot be updated or removed using Delete.
In reality, especially when write-prepared transaction is being used, things
can get tricky. For example, a prepared transaction already writes `key` to the
memtable after a successful Prepare(). Afterwards, should the transaction
rollback, it will insert a Delete into the memtable to cancel out the prior
Put. Consider the following sequence of operations.

```
// operation sequence 1
Begin txn
Put(key)
Prepare()
Flush()

Rollback txn
Flush()
```

There will be two SSTs resulting from above. One of the contains a PUT, while
the second one contains a Delete. It is also known that releasing a snapshot
can lead to an L0 containing only a SD for a particular key. Consider the
following operations following the above block.

```
// operation sequence 2
db->Put(key)
db->SingleDelete(key)
Flush()
```

The operation sequence 2 can result in an L0 with only the SD.

Should there be a snapshot for conflict checking created before operation
sequence 1, then an attempt to compact the db may hit the assertion failure
below, because ikey_.type is Delete (from a rollback).

```
else if (clear_and_output_next_key_) {
  assert(ikey_.type == kTypeValue || ikey_.type == kTypeBlobIndex);
}
```

To fix the assertion failure, we can skip the SingleDelete if we detect an
earlier Delete in the same snapshot interval.

Reviewed By: ltamasi

Differential Revision: D32056848

fbshipit-source-id: 23620a91e28562d91c45cf7e95f414b54b729748
2021-11-05 15:29:18 -07:00
Jack Feng
7d74d3471c Fixing more loosely formatted issue (#9140)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9140

Upon checking, some jobs still have loosely formatted issue.
Also, some started failing due to my previous buggy change.

https://fburl.com/scuba/sandcastle/e9mhejsc
https://fburl.com/scuba/duplo_events/dbxx4215

Reviewed By: jay-zhuang

Differential Revision: D32213703

fbshipit-source-id: 806f872b820afe275cf62459988c9d6f668af35c
2021-11-05 12:21:38 -07:00
Siying Dong
28bab0ef7e Improve comments on options.writable_file_max_buffer_size (#9131)
Summary:
Comments of options.writable_file_max_buffer_size mentioned Windows, which is confusing. Remove it.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9131

Reviewed By: anand1976

Differential Revision: D32187003

fbshipit-source-id: 1f134d7ecdc4a9d13825d461ab1da56769b9455f
2021-11-04 16:38:09 -07:00
sdong
caadf09d53 Add options.manual_wal_flush to db_bench (#9132)
Summary:
It is useful to add options.manual_wal_flush to db_bench

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9132

Test Plan: Run the benchamrk with the option.

Reviewed By: ltamasi

Differential Revision: D32188060

fbshipit-source-id: a70835d3cad0f30095218dfda1daff0a432892e5
2021-11-04 16:03:47 -07:00
Jack Feng
8be121bb80 Fixing loosely formatted child job specs, double quotes (#9125)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9125

See task for more context

Reviewed By: jay-zhuang

Differential Revision: D32157345

fbshipit-source-id: be6631c6400fd66e6891e71dc0235798c594010a
2021-11-04 15:34:51 -07:00
Peter Dillinger
2a3511a0df Fix -Werror=type-limits seen in Travis (#9128)
Summary:
Work around annoying compiler warning-as-error from https://github.com/facebook/rocksdb/issues/9113

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9128

Test Plan: CI

Reviewed By: jay-zhuang

Differential Revision: D32181499

Pulled By: pdillinger

fbshipit-source-id: d7e5f7857a29f7ba47c49c3aee7150b5763b65d9
2021-11-04 15:01:10 -07:00
Hui Xiao
1ababeb76a Deallocate payload of BlockBasedTableBuilder::Rep::FilterBlockBuilder earlier for Full/PartitionedFilter (#9070)
Summary:
Note: This PR is the 1st part of a bigger PR stack (https://github.com/facebook/rocksdb/pull/9073).

Context:
Previously, the payload (i.e, filter data) within `BlockBasedTableBuilder::Rep::FilterBlockBuilder` object is not deallocated until `BlockBasedTableBuilder` is deallocated, despite it is no longer useful after its related `filter_content` being written.
- Transferred the payload (i.e, the filter data) out of `BlockBasedTableBuilder::Rep::FilterBlockBuilder` object
- For PartitionedFilter:
   - Unified `filters` and `filter_gc` lists into one `std::deque<FilterEntry> filters` by adding a new field `last_filter_entry_key` and storing the `std::unique_ptr filter_data` with the `Slice filter` in the same entry
   - Reset `last_filter_data` in the case where `filters` is empty, which should be as by then we would've finish using all the `Slice filter`
- Deallocated the payload by going out of scope as soon as we're done with using the `filter_content` associated with the payload
- This is an internal interface change at the level of `FilterBlockBuilder::Finish()`, which leads to touching the inherited interface in `BlockBasedFilterBlockBuilder`. But for that, the payload transferring is ignored.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9070

Test Plan: - The main focus is to catch segment fault error during `FilterBlockBuilder::Finish()` and `BlockBasedTableBuilder::Finish()` and interface mismatch. Relying on existing CI tests is enough as `assert(false)` was temporarily added to verify the new logic of transferring ownership indeed run

Reviewed By: pdillinger

Differential Revision: D31884933

Pulled By: hx235

fbshipit-source-id: f73ecfbea13788d4fc058013ace27230110b52f4
2021-11-04 13:35:38 -07:00
Hui Xiao
a64c8ca7a8 Sanitize negative request bytes in GenericRateLimiter::Request and clarify API (#9112)
Summary:
Context:
Surprisingly, there isn't any sanitization against negative `int64_t bytes` in `GenericRateLimiter::Request(int64_t bytes, const Env::IOPriority pri, Statistics* stats)`. A negative `bytes` can be passed in and incorrectly increases `available_bytes_` by subtracting the negative `bytes` from `available_bytes_`, such as  [here](https://github.com/facebook/rocksdb/blob/main/util/rate_limiter.cc#L138) and [here](https://github.com/facebook/rocksdb/blob/main/util/rate_limiter.cc#L283), which are incorrect behaviors.
- Sanitized negative request bytes by rounding it up to 0
- Added notes to public and internal API

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9112

Test Plan: - Rely on existing tests

Reviewed By: ajkr

Differential Revision: D32085364

Pulled By: hx235

fbshipit-source-id: b1b6066b2dd5ffc7bcbfb07069ca65a33578251b
2021-11-04 10:11:53 -07:00
Peter Dillinger
dfedc74d82 Some checksum code refactoring (#9113)
Summary:
To prepare for adding checksum to footer and "context aware"
checksums. This also brings closely related code much closer together.

Recently added `BlockBasedTableBuilder::ComputeBlockTrailer` for testing
is made obsolete in the refactoring, as testing the checksums can happen
at a lower level of abstraction.

Also now checking for unrecognized checksum type on reading footer,
rather than later on use.

Also removed an obsolete function delcaration.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9113

Test Plan:
existing tests worked before refactoring to remove
`ComputeBlockTrailer`. And then refactored+improved tests using it.

Reviewed By: mrambacher

Differential Revision: D32090149

Pulled By: pdillinger

fbshipit-source-id: 2879da683c1498ea85a3b70dace9b6d9f6b47b6e
2021-11-04 09:09:34 -07:00