rocksdb/db
Dhruba Borthakur f4c2b7cf97 Enhance ReadOnly mode to process the all committed transactions.
Summary:
Leveldb has an api OpenForReadOnly() that opens the database
in readonly mode. This call had an option to not process the
transaction log.  This patch removes this option and always
processes all transactions that had been committed. It has
been done in such a way that it does not create/write to
any new files in the process. The invariant of "no-writes"
to the leveldb data directory is still true.

This enhancement allows multiple threads to open the same database
in readonly mode and access all trancations that were committed right
upto the OpenForReadOnly call.

I changed the public API to match the new semantics because
there are no users who are currently using this api.

Test Plan: make clean check

Reviewers: sheki

Reviewed By: sheki

CC: leveldb

Differential Revision: https://reviews.facebook.net/D7479
2012-12-19 16:30:46 -08:00
..
builder.cc Allow having different compression algorithms on different levels. 2012-10-29 11:48:09 -07:00
builder.h A number of fixes: 2011-10-31 17:22:06 +00:00
c_test.c The c_test was sometimes failing with an assertion. 2012-11-26 11:59:51 -08:00
c.cc Move WAL files to archive directory, instead of deleting. 2012-11-28 17:28:08 -08:00
corruption_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
db_bench.cc Move WAL files to archive directory, instead of deleting. 2012-11-28 17:28:08 -08:00
db_filesnapshot.cc Fix all the lint errors. 2012-11-28 17:18:41 -08:00
db_impl_readonly.cc Enhance ReadOnly mode to process the all committed transactions. 2012-12-19 16:30:46 -08:00
db_impl_readonly.h Add a readonly db 2012-11-07 14:19:48 -08:00
db_impl.cc Enhance ReadOnly mode to process the all committed transactions. 2012-12-19 16:30:46 -08:00
db_impl.h Enhance ReadOnly mode to process the all committed transactions. 2012-12-19 16:30:46 -08:00
db_iter.cc A number of fixes: 2011-10-31 17:22:06 +00:00
db_iter.h A number of fixes: 2011-10-31 17:22:06 +00:00
db_statistics.h Compilation error while compiling with OPT=-g 2012-11-11 00:20:40 -08:00
db_stats_logger.cc remove boost 2012-09-16 19:33:43 -07:00
db_test.cc Added meta-database support. 2012-12-17 11:26:59 -08:00
dbformat_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
dbformat.cc manifest_dump: Add --hex=1 option 2012-12-16 08:58:28 -08:00
dbformat.h manifest_dump: Add --hex=1 option 2012-12-16 08:58:28 -08:00
filename_test.cc Added meta-database support. 2012-12-17 11:26:59 -08:00
filename.cc Added meta-database support. 2012-12-17 11:26:59 -08:00
filename.h Added meta-database support. 2012-12-17 11:26:59 -08:00
log_file.h GetUpdatesSince API to enable replication. 2012-12-07 11:42:13 -08:00
log_format.h A number of fixes: 2011-10-31 17:22:06 +00:00
log_reader.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
log_reader.h A number of fixes: 2011-10-31 17:22:06 +00:00
log_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
log_writer.cc A number of fixes: 2011-10-31 17:22:06 +00:00
log_writer.h A number of fixes: 2011-10-31 17:22:06 +00:00
memtable.cc Fix all the lint errors. 2012-11-28 17:18:41 -08:00
memtable.h Fix all the lint errors. 2012-11-28 17:18:41 -08:00
memtablelist.cc Fix all the lint errors. 2012-11-28 17:18:41 -08:00
memtablelist.h Fix all the lint errors. 2012-11-28 17:18:41 -08:00
repair.cc This is the mega-patch multi-threaded compaction 2012-10-19 14:00:53 -07:00
skiplist_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
skiplist.h This is the mega-patch multi-threaded compaction 2012-10-19 14:00:53 -07:00
snapshot.h Delete non-visible keys during a compaction even in the presense of snapshots. 2012-11-28 15:47:40 -08:00
table_cache.cc Add two more options: disable block cache and make table cache shard number configuable 2012-11-01 13:23:21 -07:00
table_cache.h Trigger read compaction only if seeks to storage are incurred. 2012-09-28 11:10:52 -07:00
transaction_log_iterator_impl.cc Enhancements to rocksdb for better support for replication. 2012-12-17 11:40:19 -08:00
transaction_log_iterator_impl.h GetSequence API in write batch. 2012-12-12 22:21:10 -08:00
version_edit_test.cc Make some variables configurable for each db instance 2012-06-27 14:36:31 -07:00
version_edit.cc Clean up compiler warnings generated by -Wall option. 2012-08-29 14:24:51 -07:00
version_edit.h Fix all the lint errors. 2012-11-28 17:18:41 -08:00
version_set_reduce_num_levels.cc disable size compaction in ldb reduce_levels and added compression and file size parameter to it 2012-11-09 10:14:47 -08:00
version_set_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
version_set.cc manifest_dump: Add --hex=1 option 2012-12-16 08:58:28 -08:00
version_set.h manifest_dump: Add --hex=1 option 2012-12-16 08:58:28 -08:00
write_batch_internal.h GetUpdatesSince API to enable replication. 2012-12-07 11:42:13 -08:00
write_batch_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
write_batch.cc added group commit; drastically speeds up mult-threaded synchronous write workloads 2012-03-08 16:23:21 -08:00