History

jsteemann 20202b532e issue #2427 : change while into an if		2017-04-18 09:47:06 +02:00
..
CMakeLists.txt	move engine sources into their own cmake files	2017-03-28 11:38:45 +02:00
MMFilesAllocatorThread.cpp	…
MMFilesAllocatorThread.h	…
MMFilesAqlFunctions.cpp	fix handling of externals	2017-03-30 17:37:09 +02:00
MMFilesAqlFunctions.h	…
MMFilesCleanupThread.cpp	don't call throwing functions in dtor	2017-03-23 19:40:13 +01:00
MMFilesCleanupThread.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesCollection.cpp	issue #2413 : improve logging in case of lock timeout and deadlocks	2017-04-07 12:30:11 +02:00
MMFilesCollection.h	Merge branch 'engine-api' of https://github.com/arangodb/arangodb into engine-api	2017-04-05 13:40:25 +02:00
MMFilesCollectionExport.cpp	pass trx into numberDocuments	2017-03-31 11:33:16 +02:00
MMFilesCollectionExport.h	move attributes into engine	2017-03-21 10:31:50 +01:00
MMFilesCollectionKeys.cpp	refactor some code to make use of arangodb::Result	2017-03-30 09:39:21 +02:00
MMFilesCollectionKeys.h	move collection keys into engine	2017-03-21 14:23:29 +01:00
MMFilesCollectionReadLocker.h	…
MMFilesCollectionWriteLocker.h	…
MMFilesCollectorCache.h	renaming	2017-03-22 13:01:40 +01:00
MMFilesCollectorThread.cpp	refactor some code to make use of arangodb::Result	2017-03-30 09:39:21 +02:00
MMFilesCollectorThread.h	…
MMFilesCompactionLocker.h	…
MMFilesCompactorThread.cpp	pass trx into numberDocuments	2017-03-31 11:33:16 +02:00
MMFilesCompactorThread.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesDatafile.cpp	warn before we run out of file descriptors	2017-03-29 02:35:46 +02:00
MMFilesDatafile.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesDatafileHelper.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesDatafileStatistics.cpp	moved files	2017-03-16 16:45:02 +01:00
MMFilesDatafileStatistics.h	moved files	2017-03-16 16:45:02 +01:00
MMFilesDatafileStatisticsContainer.cpp	moved files	2017-03-16 16:45:02 +01:00
MMFilesDatafileStatisticsContainer.h	moved files	2017-03-16 16:45:02 +01:00
MMFilesDitch.cpp	…
MMFilesDitch.h	…
MMFilesDocumentOperation.cpp	…
MMFilesDocumentOperation.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesDocumentPosition.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesEdgeIndex.cpp	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesEdgeIndex.h	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesEngine.cpp	make versionFilename() a property of the engine	2017-04-04 17:23:02 +02:00
MMFilesEngine.h	make versionFilename() a property of the engine	2017-04-04 17:23:02 +02:00
MMFilesExportCursor.cpp	move attributes into engine	2017-03-21 10:31:50 +01:00
MMFilesExportCursor.h	move attributes into engine	2017-03-21 10:31:50 +01:00
MMFilesFulltextIndex.cpp	move replication-dump into engine	2017-03-21 13:55:57 +01:00
MMFilesFulltextIndex.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00
MMFilesGeoIndex.cpp	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesGeoIndex.h	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesHashIndex.cpp	Merge branch 'engine-api' of https://github.com/arangodb/arangodb into engine-api	2017-03-31 11:29:47 +02:00
MMFilesHashIndex.h	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesIndexElement.cpp	…
MMFilesIndexElement.h	…
MMFilesIndexFactory.cpp	more startup	2017-03-24 14:20:51 +01:00
MMFilesIndexFactory.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesLogfileManager.cpp	honor feature optionality	2017-03-29 12:53:05 +02:00
MMFilesLogfileManager.h	renaming	2017-03-22 13:01:40 +01:00
MMFilesOptimizerRules.cpp	make SORT RAND() removal a feature of the old engine	2017-04-04 08:55:08 +02:00
MMFilesOptimizerRules.h	make SORT RAND() removal a feature of the old engine	2017-04-04 08:55:08 +02:00
MMFilesPathBasedIndex.cpp	added assert	2017-04-12 15:38:01 +02:00
MMFilesPathBasedIndex.h	Path based enumerator	2017-03-29 17:33:02 +02:00
MMFilesPersistentIndex.cpp	issue #2427 : change while into an if	2017-04-18 09:47:06 +02:00
MMFilesPersistentIndex.h	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesPersistentIndexFeature.cpp	turn off all MMFiles features in case RocksDB engine is selected	2017-03-27 14:22:00 +02:00
MMFilesPersistentIndexFeature.h	…
MMFilesPersistentIndexKeyComparator.cpp	…
MMFilesPersistentIndexKeyComparator.h	…
MMFilesPrimaryIndex.cpp	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesPrimaryIndex.h	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesRemoverThread.cpp	…
MMFilesRemoverThread.h	…
MMFilesRestExportHandler.cpp	moved export into engine	2017-03-21 11:41:50 +01:00
MMFilesRestExportHandler.h	move attributes into engine	2017-03-21 10:31:50 +01:00
MMFilesRestHandlers.cpp	move attributes into engine	2017-03-21 10:31:50 +01:00
MMFilesRestHandlers.h	…
MMFilesRestWalHandler.cpp	…
MMFilesRestWalHandler.h	…
MMFilesRevisionsCache.cpp	renaming	2017-03-22 13:01:40 +01:00
MMFilesRevisionsCache.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesSkiplist.h	…
MMFilesSkiplistIndex.cpp	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesSkiplistIndex.h	de-constified lookupKey	2017-03-31 10:16:14 +02:00
MMFilesSynchronizerThread.cpp	…
MMFilesSynchronizerThread.h	…
MMFilesToken.h	…
MMFilesTransactionCollection.cpp	issue #2413 : improve logging in case of lock timeout and deadlocks	2017-04-07 12:30:11 +02:00
MMFilesTransactionCollection.h	more startup	2017-03-24 14:20:51 +01:00
MMFilesTransactionContextData.cpp	…
MMFilesTransactionContextData.h	…
MMFilesTransactionState.cpp	refactor some code to make use of arangodb::Result	2017-03-30 09:39:21 +02:00
MMFilesTransactionState.h	refactor some code to make use of arangodb::Result	2017-03-30 09:39:21 +02:00
MMFilesV8Functions.cpp	refactor some code to make use of arangodb::Result	2017-03-30 09:39:21 +02:00
MMFilesV8Functions.h	…
MMFilesView.cpp	some fixes for view handling	2017-03-17 11:18:46 +01:00
MMFilesView.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesWalLogfile.cpp	…
MMFilesWalLogfile.h	renaming	2017-03-22 13:01:40 +01:00
MMFilesWalMarker.h	added stubs for indexes	2017-03-23 15:24:00 +01:00
MMFilesWalRecoverState.cpp	Add a timeout option to <collection>.drop().	2017-04-07 15:52:19 +02:00
MMFilesWalRecoverState.h	renaming	2017-03-22 13:01:40 +01:00
MMFilesWalRecoveryFeature.cpp	turn off all MMFiles features in case RocksDB engine is selected	2017-03-27 14:22:00 +02:00
MMFilesWalRecoveryFeature.h	…
MMFilesWalSlot.cpp	renaming	2017-03-22 13:01:40 +01:00
MMFilesWalSlot.h	…
MMFilesWalSlots.cpp	renaming	2017-03-22 13:01:40 +01:00
MMFilesWalSlots.h	…
MMFilesWalSyncRegion.h	…
README.md	…
mmfiles-fulltext-common.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-handles.cpp	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-handles.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-index.cpp	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-index.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-list.cpp	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-list.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-query.cpp	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-query.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-result.cpp	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-fulltext-result.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-geo-index.cpp	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-geo-index.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00
mmfiles-replication-dump.cpp	fixed failing test	2017-03-22 14:46:10 +01:00
mmfiles-replication-dump.h	move replication-dump into engine	2017-03-21 13:55:57 +01:00

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.