History

jsteemann ad9fa2bd78 cleanup error codes a bit		2017-06-09 14:50:05 +02:00
..
CMakeLists.txt	optimize away own transaction management for RocksDB engine	2017-05-04 23:16:53 +02:00
MMFilesAllocatorThread.cpp	…
MMFilesAllocatorThread.h	…
MMFilesAqlFunctions.cpp	fix handling of externals	2017-03-30 17:37:09 +02:00
MMFilesAqlFunctions.h	…
MMFilesCleanupThread.cpp	removing unused and unimplemented methods	2017-05-10 18:25:41 +02:00
MMFilesCleanupThread.h	…
MMFilesCollection.cpp	cleanup error codes a bit	2017-06-09 14:50:05 +02:00
MMFilesCollection.h	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesCollectionExport.cpp	move common code into its own file	2017-05-22 17:46:12 +02:00
MMFilesCollectionExport.h	move common code into its own file	2017-05-22 17:46:12 +02:00
MMFilesCollectionKeys.cpp	removing unused and unimplemented methods	2017-05-10 18:25:41 +02:00
MMFilesCollectionKeys.h	…
MMFilesCollectionReadLocker.h	honor exclusive locks	2017-04-25 12:56:56 +02:00
MMFilesCollectionWriteLocker.h	honor exclusive locks	2017-04-25 12:56:56 +02:00
MMFilesCollectorCache.h	…
MMFilesCollectorThread.cpp	optimize away own transaction management for RocksDB engine	2017-05-04 23:16:53 +02:00
MMFilesCollectorThread.h	…
MMFilesCompactionLocker.h	…
MMFilesCompactorThread.cpp	removing unused and unimplemented methods	2017-05-10 18:25:41 +02:00
MMFilesCompactorThread.h	…
MMFilesDatafile.cpp	Various warnings	2017-04-26 11:26:08 +02:00
MMFilesDatafile.h	…
MMFilesDatafileHelper.h	…
MMFilesDatafileStatistics.cpp	…
MMFilesDatafileStatistics.h	…
MMFilesDatafileStatisticsContainer.cpp	…
MMFilesDatafileStatisticsContainer.h	…
MMFilesDitch.cpp	…
MMFilesDitch.h	…
MMFilesDocumentOperation.cpp	…
MMFilesDocumentOperation.h	…
MMFilesDocumentPosition.h	…
MMFilesEdgeIndex.cpp	cleanup error codes a bit	2017-06-09 14:50:05 +02:00
MMFilesEdgeIndex.h	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesEngine.cpp	abort waitForSync ops during server shutdown	2017-06-01 17:07:09 +02:00
MMFilesEngine.h	added tests for intermediate commits	2017-05-30 12:03:58 +02:00
MMFilesExportCursor.cpp	move common code into its own file	2017-05-22 17:46:12 +02:00
MMFilesExportCursor.h	…
MMFilesFulltextIndex.cpp	unify index struct return values in cluster and non-cluster for fulltext and geo indexes (#2534 )	2017-06-08 13:35:00 +02:00
MMFilesFulltextIndex.h	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesGeoIndex.cpp	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesGeoIndex.h	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesHashIndex.cpp	cleanup error codes a bit	2017-06-09 14:50:05 +02:00
MMFilesHashIndex.h	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesIncrementalSync.h	Renaming files	2017-05-31 18:12:47 +02:00
MMFilesIndexElement.cpp	…
MMFilesIndexElement.h	…
MMFilesIndexFactory.cpp	cleanup error codes a bit	2017-06-09 14:50:05 +02:00
MMFilesIndexFactory.h	Removed code paths that wrote objectIds into the Agency. This did break replication.	2017-05-02 14:59:19 +02:00
MMFilesLogfileManager.cpp	fix tick assignment	2017-06-08 22:12:23 +02:00
MMFilesLogfileManager.h	optimize away own transaction management for RocksDB engine	2017-05-04 23:16:53 +02:00
MMFilesOptimizerRules.cpp	Working geo index + tests	2017-05-09 15:04:51 +02:00
MMFilesOptimizerRules.h	Working geo index + tests	2017-05-09 15:04:51 +02:00
MMFilesPathBasedIndex.cpp	added assert	2017-04-12 15:38:01 +02:00
MMFilesPathBasedIndex.h	fixing compiler warnings and edge cache test	2017-06-02 16:00:41 +02:00
MMFilesPersistentIndex.cpp	cleanup error codes a bit	2017-06-09 14:50:05 +02:00
MMFilesPersistentIndex.h	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesPersistentIndexFeature.cpp	remove unused options	2017-05-12 12:12:09 +02:00
MMFilesPersistentIndexFeature.h	change --rocksdb.enabled to be a obosolete option	2017-04-19 14:54:10 +02:00
MMFilesPersistentIndexKeyComparator.cpp	…
MMFilesPersistentIndexKeyComparator.h	…
MMFilesPrimaryIndex.cpp	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesPrimaryIndex.h	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesRemoverThread.cpp	…
MMFilesRemoverThread.h	…
MMFilesRestExportHandler.cpp	move common code into its own file	2017-05-22 17:46:12 +02:00
MMFilesRestExportHandler.h	move common code into its own file	2017-05-22 17:46:12 +02:00
MMFilesRestHandlers.cpp	Moved MMFiles replication handler.	2017-04-18 15:35:45 -04:00
MMFilesRestHandlers.h	…
MMFilesRestReplicationHandler.cpp	try to honor server shutdown while locks are held	2017-06-01 02:24:00 +02:00
MMFilesRestReplicationHandler.h	more dictributeShardsLike code mergedfrom 3.1	2017-04-24 15:13:40 +02:00
MMFilesRestWalHandler.cpp	issue #2505	2017-05-29 10:29:47 +02:00
MMFilesRestWalHandler.h	…
MMFilesRevisionsCache.cpp	…
MMFilesRevisionsCache.h	…
MMFilesSkiplist.h	…
MMFilesSkiplistIndex.cpp	cleanup error codes a bit	2017-06-09 14:50:05 +02:00
MMFilesSkiplistIndex.h	Changed several index/collection APIs to provide better context messages.	2017-06-06 12:27:08 -04:00
MMFilesSynchronizerThread.cpp	…
MMFilesSynchronizerThread.h	…
MMFilesToken.h	…
MMFilesTransactionCollection.cpp	slightly less allocations for MMFiles transaction ops	2017-06-07 00:30:18 +02:00
MMFilesTransactionCollection.h	slightly less allocations for MMFiles transaction ops	2017-06-07 00:30:18 +02:00
MMFilesTransactionContextData.cpp	…
MMFilesTransactionContextData.h	…
MMFilesTransactionManager.cpp	optimize away own transaction management for RocksDB engine	2017-05-04 23:16:53 +02:00
MMFilesTransactionManager.h	optimize away own transaction management for RocksDB engine	2017-05-04 23:16:53 +02:00
MMFilesTransactionState.cpp	improve waitForSync performance for mmfiles	2017-06-06 12:44:39 +02:00
MMFilesTransactionState.h	added tests for intermediate commits	2017-05-30 12:03:58 +02:00
MMFilesV8Functions.cpp	fix db._engineStats()	2017-05-04 00:33:36 +02:00
MMFilesV8Functions.h	fix db._engineStats()	2017-05-04 00:33:36 +02:00
MMFilesView.cpp	…
MMFilesView.h	…
MMFilesWalLogfile.cpp	…
MMFilesWalLogfile.h	…
MMFilesWalMarker.h	…
MMFilesWalRecoverState.cpp	fix compile warning	2017-04-19 12:31:13 +02:00
MMFilesWalRecoverState.h	…
MMFilesWalRecoveryFeature.cpp	try to fix startup order	2017-04-25 11:14:10 +02:00
MMFilesWalRecoveryFeature.h	…
MMFilesWalSlot.cpp	…
MMFilesWalSlot.h	…
MMFilesWalSlots.cpp	fix tick assignment	2017-06-08 22:12:23 +02:00
MMFilesWalSlots.h	fix tick assignment	2017-06-08 22:12:23 +02:00
MMFilesWalSyncRegion.h	…
README.md	…
mmfiles-fulltext-common.h	…
mmfiles-fulltext-handles.cpp	…
mmfiles-fulltext-handles.h	…
mmfiles-fulltext-index.cpp	fix invalid new/free pairings	2017-06-07 13:21:41 +02:00
mmfiles-fulltext-index.h	cppcheck	2017-05-10 18:24:34 +02:00
mmfiles-fulltext-list.cpp	…
mmfiles-fulltext-list.h	…
mmfiles-fulltext-query.cpp	…
mmfiles-fulltext-query.h	…
mmfiles-fulltext-result.cpp	…
mmfiles-fulltext-result.h	…
mmfiles-geo-index.cpp	…
mmfiles-geo-index.h	…
mmfiles-replication-dump.cpp	Squashed commit of the following:	2017-05-12 23:22:22 +02:00
mmfiles-replication-dump.h	Squashed commit of the following:	2017-05-12 23:22:22 +02:00

README.md

MMFilesEngine

How operations are stored - Overview

All operations like insert or remove are written as markers to a write ahead log (WAL). This WAL consists of files of a certain size and if such a file is full (or is manually flushed), all relevant markers are transferred (transferMarkers()) to the journals of the respective collections. During the transfer any obsolete markers will be thrown away: a sequence of insert, remove, insert on the same document will result in the last insert discarding the previous operations. When a journal file of size (journalSize()) is full, it will be sealed and renamed. By applying these operations it will become a datafile that is read-only. Datafiles will eventually be merged by a compactor thread that does about the same work as the transferMarkers function, reducing the size of the stored data.

Ditches

Ditches are used to pin objects in WAL or journal as long as they are used by other operations.