Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Migrate to native label index during store upgrade
Add additional migrator participant that will create and populate native label index as part of store upgrade if it does not exist yet. Migrator is fully integrated into upgrade procedure: it's separate migration step and support population progress reporting.
- Loading branch information
1 parent
c39d74a
commit 2cb86ab
Showing
8 changed files
with
364 additions
and
15 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
135 changes: 135 additions & 0 deletions
135
...n/java/org/neo4j/kernel/impl/storemigration/participant/NativeLabelScanStoreMigrator.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| /* | ||
| * Copyright (c) 2002-2017 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.kernel.impl.storemigration.participant; | ||
|
|
||
| import java.io.File; | ||
| import java.io.IOException; | ||
|
|
||
| import org.neo4j.index.internal.gbptree.RecoveryCleanupWorkCollector; | ||
| import org.neo4j.io.fs.FileSystemAbstraction; | ||
| import org.neo4j.io.pagecache.PageCache; | ||
| import org.neo4j.kernel.api.labelscan.NodeLabelUpdate; | ||
| import org.neo4j.kernel.impl.api.index.IndexStoreView; | ||
| import org.neo4j.kernel.impl.api.scan.FullLabelStream; | ||
| import org.neo4j.kernel.impl.index.labelscan.NativeLabelScanStore; | ||
| import org.neo4j.kernel.impl.store.NeoStores; | ||
| import org.neo4j.kernel.impl.store.StoreFactory; | ||
| import org.neo4j.kernel.impl.storemigration.monitoring.MigrationProgressMonitor; | ||
| import org.neo4j.kernel.impl.transaction.state.storeview.NeoStoreIndexStoreView; | ||
| import org.neo4j.kernel.lifecycle.Lifespan; | ||
| import org.neo4j.kernel.monitoring.Monitors; | ||
| import org.neo4j.logging.NullLogProvider; | ||
|
|
||
| import static org.neo4j.kernel.impl.locking.LockService.NO_LOCK_SERVICE; | ||
| import static org.neo4j.kernel.impl.store.format.RecordFormatSelector.selectForVersion; | ||
|
|
||
| public class NativeLabelScanStoreMigrator extends AbstractStoreMigrationParticipant | ||
| { | ||
| private final FileSystemAbstraction fileSystem; | ||
| private final PageCache pageCache; | ||
| private boolean nativeLabelScanStoreMigrated; | ||
|
|
||
| public NativeLabelScanStoreMigrator( FileSystemAbstraction fileSystem, PageCache pageCache ) | ||
| { | ||
| super( "Native label scan index" ); | ||
| this.fileSystem = fileSystem; | ||
| this.pageCache = pageCache; | ||
| } | ||
|
|
||
| @Override | ||
| public void migrate( File storeDir, File migrationDir, MigrationProgressMonitor.Section progressMonitor, | ||
| String versionToMigrateFrom, String versionToMigrateTo ) throws IOException | ||
| { | ||
| if ( migrateNativeLabelScanStore( storeDir ) ) | ||
| { | ||
| StoreFactory storeFactory = getStoreFactory( storeDir, versionToMigrateFrom ); | ||
| try ( NeoStores neoStores = storeFactory.openAllNeoStores(); | ||
| Lifespan lifespan = new Lifespan() ) | ||
| { | ||
| progressMonitor.start( neoStores.getNodeStore().getNumberOfIdsInUse() ); | ||
| NativeLabelScanStore nativeLabelScanStore = getNativeLabelScanStore( migrationDir, progressMonitor, neoStores ); | ||
| lifespan.add( nativeLabelScanStore ); | ||
| } | ||
| nativeLabelScanStoreMigrated = true; | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void moveMigratedFiles( File migrationDir, File storeDir, String versionToUpgradeFrom, | ||
| String versionToMigrateTo ) throws IOException | ||
| { | ||
| if ( nativeLabelScanStoreMigrated ) | ||
| { | ||
| File nativeLabelIndex = new File( migrationDir, NativeLabelScanStore.FILE_NAME ); | ||
| fileSystem.moveToDirectory( nativeLabelIndex, storeDir ); | ||
| deleteLuceneLabelIndex( getLuceneStoreDirectory( storeDir ) ); | ||
| } | ||
| } | ||
|
|
||
| private NativeLabelScanStore getNativeLabelScanStore( File migrationDir, | ||
| MigrationProgressMonitor.Section progressMonitor, NeoStores neoStores ) | ||
| { | ||
| NeoStoreIndexStoreView neoStoreIndexStoreView = new NeoStoreIndexStoreView( NO_LOCK_SERVICE, neoStores ); | ||
| return new NativeLabelScanStore( pageCache, migrationDir, | ||
| new MonitoredFullLabelStream( neoStoreIndexStoreView, progressMonitor ), false, new Monitors(), | ||
| RecoveryCleanupWorkCollector.IMMEDIATE ); | ||
| } | ||
|
|
||
| private StoreFactory getStoreFactory( File storeDir, String versionToMigrateFrom ) | ||
| { | ||
| return new StoreFactory( storeDir, pageCache, fileSystem, | ||
| selectForVersion( versionToMigrateFrom ), NullLogProvider.getInstance() ); | ||
| } | ||
|
|
||
| private boolean migrateNativeLabelScanStore( File storeDir ) | ||
| { | ||
| return !fileSystem.fileExists( new File( storeDir, NativeLabelScanStore.FILE_NAME ) ); | ||
| } | ||
|
|
||
| private void deleteLuceneLabelIndex( File indexRootDirectory ) throws IOException | ||
| { | ||
| fileSystem.deleteRecursively( indexRootDirectory ); | ||
| } | ||
|
|
||
| private static File getLuceneStoreDirectory( File storeRootDir ) | ||
| { | ||
| return new File( new File( new File( storeRootDir, "schema" ), "label" ), "lucene" ); | ||
| } | ||
|
|
||
| private class MonitoredFullLabelStream extends FullLabelStream | ||
| { | ||
|
|
||
| private final MigrationProgressMonitor.Section progressMonitor; | ||
|
|
||
| MonitoredFullLabelStream( IndexStoreView indexStoreView, MigrationProgressMonitor.Section progressMonitor ) | ||
| { | ||
| super( indexStoreView ); | ||
| this.progressMonitor = progressMonitor; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean visit( NodeLabelUpdate update ) throws IOException | ||
| { | ||
| boolean visit = super.visit( update ); | ||
| progressMonitor.progress( 1 ); | ||
| return visit; | ||
| } | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.