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Dhruba Borthakur d0798f67f4 Run compactions even if workload is readonly or read-mostly. 
Summary:
The events that trigger compaction:
* opening the database
* Get -> only if seek compaction is not disabled and other checks are true
* MakeRoomForWrite -> when memtable is full
* BackgroundCall ->
  If the background thread is about to do a compaction run, it schedules
  a new background task to trigger a possible compaction. This will cause
  additional background threads to find and process other compactions that
  can run concurrently.

Test Plan: ran db_bench with overwrite and readonly alternatively.

Reviewers: sheki, MarkCallaghan

Reviewed By: sheki

CC: leveldb

Differential Revision: https://reviews.facebook.net/D9579
 		2013-03-20 23:43:29 -07:00
..
.nfs00000000066c9ebb00000002 Enhance db_bench 2013-03-14 16:00:23 -07:00
builder.cc Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
builder.h Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
c.cc Fix poor error on num_levels mismatch and few other minor improvements 2013-01-25 15:37:26 -08:00
c_test.c Fix poor error on num_levels mismatch and few other minor improvements 2013-01-25 15:37:26 -08:00
corruption_test.cc Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
db_bench.cc Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
db_filesnapshot.cc Fix all the lint errors. 2012-11-28 17:18:41 -08:00
db_impl.cc Run compactions even if workload is readonly or read-mostly. 2013-03-20 23:43:29 -07:00
db_impl.h Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
db_impl_readonly.cc Fix for the weird behaviour encountered by ldb Get where it could read only the second-latest value 2013-02-20 10:45:52 -08:00
db_impl_readonly.h Add a readonly db 2012-11-07 14:19:48 -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 Refactor statistics. Remove individual functions like incNumFileOpens 2013-02-25 13:58:34 -08:00
db_stats_logger.cc remove boost 2012-09-16 19:33:43 -07:00
db_test.cc Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
dbformat.cc manifest_dump: Add --hex=1 option 2012-12-16 08:58:28 -08:00
dbformat.h Fox db_stress crash by copying keys before changing sequencenum to zero. 2013-03-06 10:52:08 -08:00
dbformat_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
filename.cc Allow the logs to be purged by TTL. 2013-02-04 19:42:40 -08:00
filename.h Added meta-database support. 2012-12-17 11:26:59 -08:00
filename_test.cc 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 Fixed sign-comparison in rocksdb code-base and fixed Makefile 2013-03-19 14:35:23 -07:00
log_reader.cc Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
log_reader.h Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
log_test.cc Fix more signed-unsigned comparisons 2013-03-19 17:21:36 -07:00
log_writer.cc Fix a number of object lifetime/ownership issues 2013-01-23 16:54:11 -08:00
log_writer.h Fix a number of object lifetime/ownership issues 2013-01-23 16:54:11 -08:00
memtable.cc Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0. 2013-03-04 00:01:47 -08:00
memtable.h Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0. 2013-03-04 00:01:47 -08:00
memtablelist.cc Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
memtablelist.h Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
repair.cc Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
skiplist.h Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
skiplist_test.cc Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
snapshot.h Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0. 2013-03-04 00:01:47 -08:00
table_cache.cc Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
table_cache.h Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
transaction_log_iterator_impl.cc Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
transaction_log_iterator_impl.h Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
version_edit.cc Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
version_edit.h Fix poor error on num_levels mismatch and few other minor improvements 2013-01-25 15:37:26 -08:00
version_edit_test.cc Make some variables configurable for each db instance 2012-06-27 14:36:31 -07:00
version_set.cc Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
version_set.h Ability to configure bufferedio-reads, filesystem-readaheads and mmap-read-write per database. 2013-03-20 23:14:03 -07:00
version_set_reduce_num_levels.cc Fix valgrind errors in rocksdb tests: auto_roll_logger_test, reduce_levels_test 2013-03-12 16:03:16 -07:00
version_set_test.cc Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
write_batch.cc added group commit; drastically speeds up mult-threaded synchronous write workloads 2012-03-08 16:23:21 -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