Commit Graph

627 Commits

Author SHA1 Message Date
Maysam Yabandeh
e0906eb785 Clarify max_total_wal_size's scope (#4194)
Summary:
max_total_wal_size takes effect only when there are more than one column families. The patch clarify that in the inline docs

Closes https://github.com/facebook/rocksdb/issues/4180
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4194

Differential Revision: D9028767

Pulled By: maysamyabandeh

fbshipit-source-id: 8d730ca7f15e76e7ee9ff88b2b48030b2d1b7078
2018-07-27 09:29:44 -07:00
Adam Retter
c6d2a7f821 Build improvements: Split docker targets and parallelize java builds
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/4165

Differential Revision: D8955531

Pulled By: sagar0

fbshipit-source-id: 97d5a1375e200bde3c6414f94703504a4ed7536a
2018-07-23 13:28:37 -07:00
Siying Dong
a5e851e113 Reformatting some recent changes (#4161)
Summary:
Lint is not happy with some new code recently committed. Format them.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4161

Differential Revision: D8940582

Pulled By: siying

fbshipit-source-id: c9b43b1ef8c88b5e923911058b44eb77234b36b7
2018-07-20 14:43:38 -07:00
Tomas Kolda
80afa84903 Windows JNI build fixes (#4015)
Summary:
Fixing compilation, unsatisfied link exceptions (updated list of files that needs to be linked) and warnings for Windows build.
```C++
//MSVC 2015 does not support dynamic arrays like:
  rocksdb::Slice key_parts[jkey_parts_len];
//I have converted to:
  std::vector<rocksdb::Slice> key_parts;
```
Also reusing `free_key_parts` that does the same as `free_key_value_parts` that was removed.

Java elapsedTime unit test increase of sleep to 2 ms. Otherwise it was failing.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4015

Differential Revision: D8558215

Pulled By: sagar0

fbshipit-source-id: d3c34f846343f9218424da2402a2bd367bbd0aa2
2018-07-18 12:31:48 -07:00
Nathan VanBenschoten
ef7815b803 Support range deletion tombstones in IngestExternalFile SSTs (#3778)
Summary:
Fixes #3391.

This change adds a `DeleteRange` method to `SstFileWriter` and adds
support for ingesting SSTs with range deletion tombstones. This is
important for applications that need to atomically ingest SSTs while
clearing out any existing keys in a given key range.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/3778

Differential Revision: D8821836

Pulled By: anand1976

fbshipit-source-id: ca7786c1947ff129afa703dab011d524c7883844
2018-07-13 22:43:09 -07:00
Siying Dong
35b38a232c Update comments of WriteBatchWithIndex
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/4113

Differential Revision: D8814172

Pulled By: siying

fbshipit-source-id: cabc31db2c74803af9b2f99329155a1086eb1b22
2018-07-11 17:42:50 -07:00
Nicolas Pépin-Perreault
cfee7fb51a Allow storing metadata with backups for Java API (#4111)
Summary:
Exposes BackupEngine::CreateNewBackupWithMetadata and BackupInfo metadata to the Java API.

Full disclaimer, I'm not familiar with JNI stuff, so I might have forgotten something (hopefully no memory leaks!). I also tried to find contributing guidelines but didn't see any, but I hope the PR style is consistent with the rest of the code base.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4111

Differential Revision: D8811180

Pulled By: ajkr

fbshipit-source-id: e38b3e396c7574328c2a1a0e55acc8d092b6a569
2018-07-11 15:57:49 -07:00
Siying Dong
926f3a78a6 In delete scheduler, before ftruncate file for slow delete, check whether there is other hard links (#4093)
Summary:
Right now slow deletion with ftruncate doesn't work well with checkpoints because it ruin hard linked files in checkpoints. To fix it, check the file has no other hard link before ftruncate it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4093

Differential Revision: D8730360

Pulled By: siying

fbshipit-source-id: 756eea5bce8a87b9a2ea3a5bfa190b2cab6f75df
2018-07-09 15:28:12 -07:00
Manuel Ung
b9846370e9 WriteUnPrepared: Add support for recovering WriteUnprepared transactions (#4078)
Summary:
This adds support for recovering WriteUnprepared transactions through the following changes:
- The information in `RecoveredTransaction` is extended so that it can reference multiple batches.
- `MarkBeginPrepare` is extended with a bool indicating whether it is an unprepared begin, and this is passed down to `InsertRecoveredTransaction` to indicate whether the current transaction is prepared or not.
- `WriteUnpreparedTxnDB::Initialize` is overridden so that it will rollback unprepared transactions from the recovered transactions. This can be done without updating the prepare heap/commit map, because this is before the DB has finished initializing, and after writing the rollback batch, those data structures should not contain information about the rolled back transaction anyway.

Commit/Rollback of live transactions is still unimplemented and will come later.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4078

Differential Revision: D8703382

Pulled By: lth

fbshipit-source-id: 7e0aada6c23bd39299f1f20d6c060492e0e6b60a
2018-07-06 17:59:13 -07:00
Adam Retter
0d234dfce4 Remove unused arg which causes compilation failure (#4080)
Summary:
It seems that compilation has been made stricter about unused args.
Closes https://github.com/facebook/rocksdb/pull/4080

Differential Revision: D8712049

Pulled By: sagar0

fbshipit-source-id: 984af1982638af3568aac1a167f565f4741badee
2018-07-02 10:27:36 -07:00
Andrey Zagrebin
e099c2dd55 check if data size exceeds java array vm limit when it is copied in jni (#3850)
Summary:
to address issue #3849
Closes https://github.com/facebook/rocksdb/pull/3850

Differential Revision: D8695487

Pulled By: sagar0

fbshipit-source-id: 04baeb2127663934ed1321fe6d9a9ec23c86e16b
2018-06-29 16:13:06 -07:00
Zhichao Cao
1f6efabe23 Add bottommost_compression_opts to for bottommost_compression (#3985)
Summary:
…ression

 For `CompressionType` we have options `compression` and `bottommost_compression`. Thus, to make the compression options consitent with the compression type when bottommost_compression is enabled, we add the bottommost_compression_opts
Closes https://github.com/facebook/rocksdb/pull/3985

Reviewed By: riversand963

Differential Revision: D8385911

Pulled By: zhichao-cao

fbshipit-source-id: 07bc533dd61bcf1cef5927d8d62901c13d38d5fc
2018-06-27 17:42:38 -07:00
Tomas Kolda
7b4b43febb zLinux build error with gcc and IBM Java headers (#4013)
Summary:
`SetByteArrayRegion` does not have const source buffer thus compilation error. I have made that same as in other JNI files (const_cast). It was missing for new transaction functionality added recently.
Closes https://github.com/facebook/rocksdb/pull/4013

Differential Revision: D8493290

Pulled By: sagar0

fbshipit-source-id: 14afedf365b111121bd11e68a8d546a1cae68b26
2018-06-18 13:58:28 -07:00
Tomas Kolda
e5bee404ce zLinux s390x support in JNI (#4009)
Summary:
Adding support for zLinux on s390x architecture in JNI.
Closes https://github.com/facebook/rocksdb/pull/4009

Differential Revision: D8483750

Pulled By: siying

fbshipit-source-id: e681657c27e7a28f1731e08e8570382de5deff44
2018-06-18 09:57:02 -07:00
Tomas Kolda
e750dacffb Crash on Windows, because of shared_ptr reinterpret cast (#3999)
Summary:
For more details see #3998
Closes https://github.com/facebook/rocksdb/pull/3999

Differential Revision: D8458905

Pulled By: sagar0

fbshipit-source-id: d6e09182933253a08eaf81ac7cfe50ed3b6576c5
2018-06-17 20:56:33 -07:00
Adam Retter
45434178ee Fix an issue with unnecessary capture in lambda expressions
Summary:
Closes https://github.com/facebook/rocksdb/issues/3900
Replaces https://github.com/facebook/rocksdb/pull/3901

I needed this to build v5.12.4 on Mac OS X (10.13.3).
Closes https://github.com/facebook/rocksdb/pull/3904

Differential Revision: D8169357

Pulled By: sagar0

fbshipit-source-id: 85faac42168796e7def9250d0c221a9a03b84476
2018-05-25 15:12:44 -07:00
Anand Ananthabhotla
dbdaa4662e Add a stat for MultiGet keys found, update memtable hit/miss stats
Summary:
1. Add a new ticker stat rocksdb.number.multiget.keys.found to track the
number of keys successfully read
2. Update rocksdb.memtable.hit/miss in DBImpl::MultiGet(). It was being done in
DBImpl::GetImpl(), but not MultiGet
Closes https://github.com/facebook/rocksdb/pull/3730

Differential Revision: D7677364

Pulled By: anand1976

fbshipit-source-id: af22bd0ef8ddc5cf2b4244b0a024e539fe48bca5
2018-04-20 15:28:19 -07:00
David Lai
3be9b36453 comment unused parameters to turn on -Wunused-parameter flag
Summary:
This PR comments out the rest of the unused arguments which allow us to turn on the -Wunused-parameter flag. This is the second part of a codemod relating to https://github.com/facebook/rocksdb/pull/3557.
Closes https://github.com/facebook/rocksdb/pull/3662

Differential Revision: D7426121

Pulled By: Dayvedde

fbshipit-source-id: 223994923b42bd4953eb016a0129e47560f7e352
2018-04-12 17:59:16 -07:00
Adam Retter
ca87aef82d Added support for SstFileManager to RocksJava
Summary: Closes https://github.com/facebook/rocksdb/pull/3666

Differential Revision: D7457634

Pulled By: sagar0

fbshipit-source-id: 47741e2ee66e9255c580f4e38cfb86b284c27c2f
2018-04-06 21:26:32 -07:00
Adam Retter
8917eee962 Fixed small typos
Summary: Closes https://github.com/facebook/rocksdb/pull/3667

Differential Revision: D7470060

Pulled By: miasantreble

fbshipit-source-id: 8e8545cda38f0805f35ccdb8841666a2d7a965f5
2018-04-01 17:14:46 -07:00
Sagar Vemuri
d5585bb605 Shared block cache in RocksJava
Summary:
Changes to support sharing block cache using the Java API.

Previously DB instances could share the block cache only when the same Options instance is passed to all the DB instances. But now, with this change, it is possible to explicitly create a cache and pass it to multiple options instances, to share the block cache.

Implementing this for [Rocksandra](https://github.com/instagram/cassandra/tree/rocks_3.0), but this feature has been requested by many java api users over the years.
Closes https://github.com/facebook/rocksdb/pull/3623

Differential Revision: D7305794

Pulled By: sagar0

fbshipit-source-id: 03e4e8ed7aeee6f88bada4a8365d4279ede2ad71
2018-03-21 18:43:05 -07:00
Tobias Tschinkowitz
ccb761364d Enable compilation on OpenBSD
Summary:
I modified the Makefile so that we can compile rocksdb on OpenBSD.
The instructions for building have been added to INSTALL.md.
The whole compilation process works fine like this on OpenBSD-current
Closes https://github.com/facebook/rocksdb/pull/3617

Differential Revision: D7323754

Pulled By: siying

fbshipit-source-id: 990037d1cc69138d22f85bd77ef4dc8c1ba9edea
2018-03-19 12:30:05 -07:00
Adam Retter
bef95be5d8 Improve the output of the RocksJava JUnit runner
Summary:
This changes the console output when the RocksJava tests are run. It makes spotting the errors and failures much easier; perviously the output was malformed with results like "ERun" where the "E" represented an error in the preceding test.
Closes https://github.com/facebook/rocksdb/pull/3621

Differential Revision: D7306172

Pulled By: sagar0

fbshipit-source-id: 3fa6f6e1ca6c6ea7ceef55a23ca81903716132b7
2018-03-16 13:27:55 -07:00
Javeme Lee
f6156fb558 Support StringAppendOperator(delimiter_char) constructor in java-api
Summary:
Fixes #3336
Closes https://github.com/facebook/rocksdb/pull/3337

Differential Revision: D7196585

Pulled By: sagar0

fbshipit-source-id: a854f3fc906862ecba685b31946e4ef7c0b421c5
2018-03-08 16:17:47 -08:00
Adam Retter
c5302a8a58 Java wrapper for Native Comparators
Summary:
This is an abstraction for working with custom Comparators implemented in native C++ code from Java. Native code must directly extend `rocksdb::Comparator`. When the native code comparator is compiled into the RocksDB codebase, you can then create a Java Class, and JNI stub to wrap it.

Useful if the C++/JNI barrier overhead is too much for your applications comparator performance.

An example is provided in `java/rocksjni/native_comparator_wrapper_test.cc` and `java/src/main/java/org/rocksdb/NativeComparatorWrapperTest.java`.
Closes https://github.com/facebook/rocksdb/pull/3334

Differential Revision: D7172605

Pulled By: miasantreble

fbshipit-source-id: e24b7eb267a3bcb6afa214e0379a1d5e8a2ceabe
2018-03-08 11:27:42 -08:00
Bruce Mitchener
a3a3f5497c Fix some typos in comments and docs.
Summary: Closes https://github.com/facebook/rocksdb/pull/3568

Differential Revision: D7170953

Pulled By: siying

fbshipit-source-id: 9cfb8dd88b7266da920c0e0c1e10fb2c5af0641c
2018-03-08 10:27:25 -08:00
Adam Retter
db2445ad24 Brings the Java API for WriteBatch inline with the C++ API
Summary:
* Exposes status
* Corrects some method naming
* Adds missing functionality
Closes https://github.com/facebook/rocksdb/pull/3550

Differential Revision: D7140790

Pulled By: sagar0

fbshipit-source-id: cbdab6c5a7ae4f3030fb46739e9060e381b26fa6
2018-03-02 15:44:10 -08:00
Adam Retter
2ac988c67e Add TransactionDB and OptimisticTransactionDB to the Java API
Summary:
Closes https://github.com/facebook/rocksdb/issues/697
Closes https://github.com/facebook/rocksdb/issues/1151
Closes https://github.com/facebook/rocksdb/pull/1298

Differential Revision: D7131402

Pulled By: sagar0

fbshipit-source-id: bcd34ce95ed88cc641786089ff4232df7b2f089f
2018-03-02 10:34:13 -08:00
Ben Clay
a247617e6f Java: Add copy constructors for various option classes
Summary:
Add Java-side copy constructors for:
- Options
- DBOptions
- ColumnFamilyOptions
- WriteOptions

along with unit tests to assert the copy worked.

NOTE: Unit tests are failing in travis but it looks like a global timeout issue. These tests pass.
Closes https://github.com/facebook/rocksdb/pull/3450

Differential Revision: D6874425

Pulled By: sagar0

fbshipit-source-id: 5bde68ea5b5225e071faea2628bf8bbf10bd65ab
2018-02-02 10:57:28 -08:00
Mark Isaacson
b8eb32f8cf Suppress lint in old files
Summary: Grandfather in super old lint issues to make a clean slate for moving forward that allows us to have stronger enforcement on new issues.

Reviewed By: yiwu-arbug

Differential Revision: D6821806

fbshipit-source-id: 22797d31ec58e9eb0255d3b66fedfcfcb0dc127c
2018-01-29 12:56:42 -08:00
Adam Retter
a53c571d2d FreeBSD build support for RocksDB and RocksJava
Summary:
Tested on a clean FreeBSD 11.01 x64.

Closes https://github.com/facebook/rocksdb/pull/1423
Closes https://github.com/facebook/rocksdb/pull/3357

Differential Revision: D6705868

Pulled By: sagar0

fbshipit-source-id: cbccbbdafd4f42922512ca03619a5d5583a425fd
2018-01-11 13:29:55 -08:00
Sagar Vemuri
677f249d6d Fix Travis build failures in CMake RocksJava
Summary:
Fixed RocksJava travis build failure due to a missing file in java/CMakeLists.txt. (from #3332).
Closes https://github.com/facebook/rocksdb/pull/3344

Differential Revision: D6686472

Pulled By: sagar0

fbshipit-source-id: dd3281dff1342c3a7235c402890420aa56db0fe3
2018-01-09 16:42:15 -08:00
Adam Retter
398d72fa61 Add autotune and #getBytesPerSecond() to RocksJava RateLimiter
Summary: Closes https://github.com/facebook/rocksdb/pull/3332

Differential Revision: D6667680

Pulled By: ajkr

fbshipit-source-id: b2bb6889257850a4eb6f6cbd7106f62df7b82730
2018-01-08 12:30:52 -08:00
Adam Retter
00e5e1ef7f Fixes the build on Windows
Summary:
As discovered during v5.9.2 release, and forward-ported.
Closes https://github.com/facebook/rocksdb/pull/3323

Differential Revision: D6657209

Pulled By: siying

fbshipit-source-id: b560d9f8ddb89e0ffaff7c895ec80f68ddf7dab4
2018-01-03 12:27:12 -08:00
Anand Ananthabhotla
fccc12f386 Add a histogram stat for memtable flush
Summary:
Add a new histogram stat called rocksdb.db.flush.micros for memtable
flush
Closes https://github.com/facebook/rocksdb/pull/3269

Differential Revision: D6559496

Pulled By: anand1976

fbshipit-source-id: f5c771ba2568630458751795e8c37a493ff9b14d
2017-12-15 18:57:00 -08:00
Tamir Duberstein
cf0d6aa007 CMake cross platform Java support and add JNI to travis
Summary:
Rewrite `java/CMakeLists.txt` to take advantage of CMake's cross platform
Java support.

adamretter
Closes https://github.com/facebook/rocksdb/pull/2301

Differential Revision: D5070724

Pulled By: sagar0

fbshipit-source-id: 999aee9bd39da2b24a5fe493a2eb0e9af6072dc7
2017-11-28 12:27:53 -08:00
anand1976
d394a6bb48 Add a ticker stat for number of keys skipped during iteration
Summary:
This diff adds a new ticker stat, NUMBER_ITER_SKIP, to count the
number of internal keys skipped during iteration. Keys can be skipped
due to deletes, or lower sequence number, or higher sequence number
than the one requested.

Also, fix the issue when StatisticsData is naturally aligned on cacheline boundary,
padding becomes a zero size array, which the Windows compiler doesn't
like. So add a cacheline worth of padding in that case to keep it happy.
We cannot conditionally add padding as gcc doesn't allow using sizeof
in preprocessor directives.
Closes https://github.com/facebook/rocksdb/pull/3177

Differential Revision: D6353897

Pulled By: anand1976

fbshipit-source-id: 441d5a09af9c4e22e7355242dfc0c7b27aa0a6c2
2017-11-20 21:26:37 -08:00
Sagar Vemuri
76c3fbd651 Add Memtable Read Tier to RocksJava
Summary:
This options was introduced in the C++ API in #1953 .
Closes https://github.com/facebook/rocksdb/pull/3064

Differential Revision: D6139010

Pulled By: sagar0

fbshipit-source-id: 164de11d539d174cf3afe7cd40e667049f44b0bc
2017-11-02 17:27:37 -07:00
zawlazaw
57fcdc264a added missing subcodes and improved error message for missing enum values
Summary:
Java's `Status.SubCode` was out of sync with `include/rocksdb/status.h:SubCode`.

When running out of disc space this led to an `IllegalArgumentException` because of an invalid status code, rather than just returning the corresponding status code without an exception.

I added the missing status codes.

By this, we keep the behaviour of throwing an `IllegalArgumentException` in case of newly added status codes that are defined in C but not in Java.

We could think of an alternative strategy: add in Java another code "UnknownCode" which acts as a catch-all for all those status codes that are not yet mirrored from C to Java. This approach would never throw an exception but simply return a non-OK status-code.

I think the current approach of throwing an Exception in case of a C/Java inconsistency is fine, but if you have some opinion on the alternative strategy, then feel free to comment here.
Closes https://github.com/facebook/rocksdb/pull/3050

Differential Revision: D6129682

Pulled By: sagar0

fbshipit-source-id: f2bf44caad650837cffdcb1f93eb793b43580c66
2017-10-23 16:42:07 -07:00
Sagar Vemuri
cc67b22d6e Add OptionsUtil class to java/CMakeLists.txt
Summary:
Adding OptionsUtil java class and options_util.cc to java/CMakeLists.txt, which were missed accidentally when they were introduced in #2898.
Closes https://github.com/facebook/rocksdb/pull/2985

Differential Revision: D6015878

Pulled By: sagar0

fbshipit-source-id: 1abbd46db4aebad1e07ea53523eacbdcb12823e1
2017-10-12 16:57:05 -07:00
Adam Retter
560e984995 Added CompactionFilterFactory support to RocksJava
Summary:
This PR also includes some cleanup, bugfixes and refactoring of the Java API. However these are really pre-cursors on the road to CompactionFilterFactory support.
Closes https://github.com/facebook/rocksdb/pull/1241

Differential Revision: D6012778

Pulled By: sagar0

fbshipit-source-id: 0774465940ee99001a78906e4fed4ef57068ad5c
2017-10-12 11:12:16 -07:00
Sagar Vemuri
bb38cd03a9 Limit number of merge operands in Cassandra merge operator
Summary:
Now that RocksDB supports conditional merging during point lookups (introduced in #2923), Cassandra value merge operator can be updated to pass in a limit. The limit needs to be passed in from the Cassandra code.
Closes https://github.com/facebook/rocksdb/pull/2947

Differential Revision: D5938454

Pulled By: sagar0

fbshipit-source-id: d64a72d53170d8cf202b53bd648475c3952f7d7f
2017-10-02 16:11:40 -07:00
Adam Retter
983028f097 RocksJava build target for Docker on ppc64le
Summary:
This enables us to crossbuild pcc64le RocksJava binaries with a suitably old version of glibc (2.17) on CentOS 7.
Closes https://github.com/facebook/rocksdb/pull/2491

Differential Revision: D5955301

Pulled By: sagar0

fbshipit-source-id: 69ef9746f1dc30ffde4063dc764583d8c7ae937e
2017-10-02 11:11:56 -07:00
Sagar Vemuri
0806801dc8 DestroyDB API
Summary:
Expose DestroyDB API in RocksJava.
Closes https://github.com/facebook/rocksdb/pull/2934

Differential Revision: D5914775

Pulled By: sagar0

fbshipit-source-id: 84af6ea0d2bccdcfb9fe8c07b2f87373f0d5bab6
2017-09-26 16:42:11 -07:00
Sagar Vemuri
c8f3606731 Expose LoadLatestOptions, LoadOptionsFromFile and GetLatestOptionsFileName APIs in RocksJava
Summary:
JNI wrappers for LoadLatestOptions, LoadOptionsFromFile and GetLatestOptionsFileName APIs.
Closes https://github.com/facebook/rocksdb/pull/2898

Differential Revision: D5857934

Pulled By: sagar0

fbshipit-source-id: 68b79e83eab8de9416e3f1fef73e11cf7947e90a
2017-09-21 17:29:13 -07:00
Sagar Vemuri
96a13b4f4b Use jemalloc in rocksdbjni library built via vagrant
Summary:
Problem:
During RocksJava performance testing we found that the rocksdb jni library is not built with jemalloc; instead it was getting built with the default glibc malloc. We saw quite a bit of memory bloat due to this.

Addressed this by installing jemalloc-devel package in the vm that we use to build release jars.
Closes https://github.com/facebook/rocksdb/pull/2916

Differential Revision: D5887018

Pulled By: sagar0

fbshipit-source-id: ace0b5d60234b3a30dcd5d39633e7827a5982a50
2017-09-21 16:42:06 -07:00
Sagar Vemuri
3fc08fa88e Expose max_background_jobs option in RocksJava
Summary:
This option was introduced in the C++ API in RocksDB 5.6 in bb01c1880c . Now, exposing it through RocksJava API.
Closes https://github.com/facebook/rocksdb/pull/2908

Differential Revision: D5864224

Pulled By: sagar0

fbshipit-source-id: 140aa55dcf74b14e4d11219d996735c7fdddf513
2017-09-20 10:26:37 -07:00
Pengchao Wang
e4234fbdcf collecting kValue type tombstone
Summary:
In our testing cluster, we found large amount tombstone has been promoted to kValue type from kMerge after reaching the top level of compaction. Since we used to only collecting tombstone in merge operator, those tombstones can never be collected.

This PR addresses the issue by adding a GC step in compaction filter, which is only for kValue type records. Since those record already reached the top of compaction (no earlier data exists) we can safely remove them in compaction filter without worrying old data appears.

This PR also removes an old optimization in cassandra merge operator for single merge operands.  We need to do GC even on a single operand, so the optimation does not make sense anymore.
Closes https://github.com/facebook/rocksdb/pull/2855

Reviewed By: sagar0

Differential Revision: D5806445

Pulled By: wpc

fbshipit-source-id: 6eb25629d4ce917eb5e8b489f64a6aa78c7d270b
2017-09-18 16:27:12 -07:00
Ben Clay
382277d0fe JNI support for ReadOptions::iterate_upper_bound
Summary:
Plumbed ReadOptions::iterate_upper_bound through JNI.

Made the following design choices:
* Used Slice instead of AbstractSlice due to the anticipated usecase (key / key prefix). Can change this if anyone disagrees.
* Used Slice instead of raw byte[] which seemed cleaner but necessitated the package-private handle-based Slice constructor. Followed WriteBatch as an example.
* We need a copy constructor for ReadOptions, as we create one base ReadOptions for a particular usecase and clone -> change the iterate_upper_bound on each slice operation. Shallow copy seemed cleanest.
* Hold a reference to the upper bound slice on ReadOptions, in contrast to Snapshot.

Signed a Facebook CLA this morning.
Closes https://github.com/facebook/rocksdb/pull/2872

Differential Revision: D5824446

Pulled By: sagar0

fbshipit-source-id: 74fc51313a10a81ecd348625e2a50ca5b7766888
2017-09-14 18:28:20 -07:00
zawlazaw
044a71e27e Add iterator's SeekForPrev functionality to the java-api
Summary:
As discussed in #2742 , this pull-requests brings the iterator's [SeekForPrev()](https://github.com/facebook/rocksdb/wiki/SeekForPrev) functionality to the java-api. It affects all locations in the code where previously only Seek() was supported.

All code changes are essentially a copy & paste of the already existing implementations for Seek().
**Please Note**: the changes to the C++ code were applied without fully understanding its effect, so please take a closer look. However, since Seek() and SeekForPrev() provide exactly the same signature, I do not expect any mistake here.

The java-tests are extended by new tests for the additional functionality.

Compilation (`make rocksdbjavastatic`) and test (`java/make test`) run without errors.
Closes https://github.com/facebook/rocksdb/pull/2747

Differential Revision: D5721011

Pulled By: sagar0

fbshipit-source-id: c1f951cddc321592c70dd2d32bc04892f3f119f8
2017-09-12 10:56:29 -07:00