La purge de version s’exécute et les temps de réponse de AEM sont lents. Les vidages de thread [6] indiquent que la purge de version est active et bloque d'autres thread.
Environnement
AEM 6.0, 6.1 et 6.2
Cause
La tâche de maintenance de la purge de version s’exécute au-delà de sa fenêtre planifiée si elle prend trop de temps. La cause de ce problème est probablement due à la création en masse de versions dans AEM qui fait que la purge de version prend trop de temps.
Les actions qui entraînent la création de versions sont (liste non-exhaustive) :
- Création, contrôle ou activation de pages
- Transfert, modification ou activation de fichiers
- Mise à jour et enregistrement des modèles de flux de production
Solution
Pour résoudre ce problème, suivez les étapes ci-dessous :
1. Installation de la version la plus récente du groupe de correctifs cumulatifs (Cumulative Fix Pack), applicable uniquement àAEM6.2
Si vous travaillez avec AEM6.2, installez le groupe de correctifs cumulatifs AEM6.2 Cumulative Fix Pack 2 ou une version plus récente. Après l’installation, lorsque la maintenance de la purge de versions s’exécute, cela aurait pour effet de réduire le chargement sur le serveur AEM.
Si vous ne pouvez pas appliquer le groupe de correctifs cumulatifs, Contactez l'assistance clientèle AEM et demandez le correctif AEM6.2 15186.
2. Modifiez la période de maintenance
Déplacez la planification de la maintenance de la purge de versions afin d’éviter qu’elle ne s’exécute pendant les heures de bureau. Voir cette documentation pour savoir comment modifier des planifications de maintenance
3. Rechercher quel code d'application crée de nouvelles versions et améliorez-le.
Si les versions sont créées suite à des activations, modifiez le code afin qu’il supprime la création de version.
Utilisez la classe [1] class, call ReplicationOptions.setSuppressVersions(true) [2] et transmettez l'objet en tant que paramètre en appelant Replicator.replicate [3].
[1] https://docs.adobe.com/docs/en/aem/6-2/develop/ref/javadoc/com/day/cq/replication/ReplicationOptions.html
[2] https://docs.adobe.com/docs/en/aem/6-2/develop/ref/javadoc/com/day/cq/replication/ReplicationOptions.html#setSuppressVersions(boolean)
[3] https://docs.adobe.com/docs/en/aem/6-2/develop/ref/javadoc/com/day/cq/replication/Replicator.html
3. Désactiver la création de version sur les agents de réplication
a. Accédez à http://aem-host:port/etc/replication/agents.author.html
b. Ouvrez chaque configuration d'agent de réplication
c. Sélectionnez l'onglet « déclencheurs »
d. Cochez « Aucun contrôle de version » (voir [1] ci-dessous)
e. Enregistrez
Ou faites ceci pour tous les agents dans une configuration :
a. Allez à http://aem-host:port/system/console/configMgr/com.day.cq.wcm.core.impl.VersionManagerImpl
b. Désactivez « Créaer une version à l'activation »
c. Enregistrez
4. Désactiver la création de version sur les applications d'accompagnement et les transferts WebDav
a. Accédez à http://aem-host:port/system/console/configMgr/com.adobe.cq.dam.webdav.impl.io.AssetIOHandler
b. Désactivez "créer une version" (voir [2] ci-dessous)
c. Enregistrez
5. Activer la purge automatique lors de la création de version
Le gestionnaire de version dispose d’une fonction permettant de purger les anciennes versions lorsque vous ajoutez de nouvelles pages à des pages et des actifs. Suivez ces étapes pour activer cette fonctionnalité.
a. Accédez à http://aem-host:port/system/console/configMgr/com.day.cq.wcm.core.impl.VersionManagerImpl
b. Activez : «activez la purge »
c. Enregistrez
6. Lancez la compression Tar hors ligne
Assurez-vous que vous exécutez la compression tar hors ligne régulièrement car une absence de maintenance de compression peut affecter les performances du système.
[4] Configuration de l'agent de réplication pour désactiver la création automatique de versions
[5] configuration OSGi pour désactiver la création de version de WebDAV / Transfert d'application de bureau (« Companion »)
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[6] Nœud affichant une purge de version s'exécutant longtemps :
pool-20-thread-17 - priority:5 - threadId:0x00007fbc5c00c800 - nativeId:0x341b - state:RUNNABLE stackTrace: java.lang.Thread.State: RUNNABLE at java.io.RandomAccessFile.readBytes(Native Method) at java.io.RandomAccessFile.read(RandomAccessFile.java:377) at java.io.RandomAccessFile.readFully(RandomAccessFile.java:436) at java.io.RandomAccessFile.readFully(RandomAccessFile.java:416) at org.apache.jackrabbit.oak.plugins.segment.file.TarWriter.readEntry(TarWriter.java:186) - locked <0x0000000679fe3910> (a org.apache.jackrabbit.oak.plugins.segment.file.TarWriter) at org.apache.jackrabbit.oak.plugins.segment.file.FileStore.readSegment(FileStore.java:847) - locked <0x00000005c0c49560> (a org.apache.jackrabbit.oak.plugins.segment.file.FileStore) at org.apache.jackrabbit.oak.plugins.segment.SegmentTracker.getSegment(SegmentTracker.java:182) at org.apache.jackrabbit.oak.plugins.segment.SegmentId.getSegment(SegmentId.java:108) - locked <0x00000004dcafb448> (a org.apache.jackrabbit.oak.plugins.segment.SegmentId) at org.apache.jackrabbit.oak.plugins.segment.Record.getSegment(Record.java:82) at org.apache.jackrabbit.oak.plugins.segment.MapRecord.size(MapRecord.java:142) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeMapBucket(SegmentWriter.java:534) - locked <0x00000005c0c57640> (a org.apache.jackrabbit.oak.plugins.segment.SegmentWriter) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeMapBucket(SegmentWriter.java:532) - locked <0x00000005c0c57640> (a org.apache.jackrabbit.oak.plugins.segment.SegmentWriter) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeMapBucket(SegmentWriter.java:532) - locked <0x00000005c0c57640> (a org.apache.jackrabbit.oak.plugins.segment.SegmentWriter) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeMap(SegmentWriter.java:784) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1172) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1174) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1155) at org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:399) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1146) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1155) at org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:399) at org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1146) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeBuilder.getNodeState(SegmentNodeBuilder.java:100) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeBuilder.updated(SegmentNodeBuilder.java:85) at org.apache.jackrabbit.oak.plugins.memory.MemoryNodeBuilder.updated(MemoryNodeBuilder.java:214) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeBuilder.updated(SegmentNodeBuilder.java:81) at org.apache.jackrabbit.oak.plugins.memory.MemoryNodeBuilder.remove(MemoryNodeBuilder.java:355) at org.apache.jackrabbit.oak.plugins.index.property.strategy.OrderedContentMirrorStoreStrategy.prune(OrderedContentMirrorStoreStrategy.java:242) at org.apache.jackrabbit.oak.plugins.index.property.strategy.ContentMirrorStoreStrategy.remove(ContentMirrorStoreStrategy.java:118) at org.apache.jackrabbit.oak.plugins.index.property.strategy.ContentMirrorStoreStrategy.update(ContentMirrorStoreStrategy.java:90) at org.apache.jackrabbit.oak.plugins.index.property.PropertyIndexEditor.leave(PropertyIndexEditor.java:274) at org.apache.jackrabbit.oak.plugins.index.property.OrderedPropertyIndexEditor.leave(OrderedPropertyIndexEditor.java:176) at org.apache.jackrabbit.oak.spi.commit.CompositeEditor.leave(CompositeEditor.java:74) at org.apache.jackrabbit.oak.spi.commit.VisibleEditor.leave(VisibleEditor.java:63) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:176) at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:143) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:171) at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:143) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:171) at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:143) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:171) at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:143) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:171) at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:143) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:171) at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:143) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:171) at org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.compareAgainstBaseState(EmptyNodeState.java:143) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeDeleted(EditorDiff.java:171) at org.apache.jackrabbit.oak.plugins.segment.MapRecord$3.childNodeDeleted(MapRecord.java:449) at org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:481) at org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:436) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:531) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148) at org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148) at org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148) at org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148) at org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148) at org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583) at org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52) at org.apache.jackrabbit.oak.spi.commit.EditorHook.processCommit(EditorHook.java:54) at org.apache.jackrabbit.oak.spi.commit.CompositeHook.processCommit(CompositeHook.java:61) at org.apache.jackrabbit.oak.spi.commit.CompositeHook.processCommit(CompositeHook.java:61) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.prepare(SegmentNodeStore.java:458) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.optimisticMerge(SegmentNodeStore.java:489) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.execute(SegmentNodeStore.java:545) at org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore.merge(SegmentNodeStore.java:208) at org.apache.jackrabbit.oak.spi.state.ProxyNodeStore.merge(ProxyNodeStore.java:43) at org.apache.jackrabbit.oak.core.MutableRoot.commit(MutableRoot.java:247) at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.commit(SessionDelegate.java:339) at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.commit(SessionDelegate.java:364) at org.apache.jackrabbit.oak.jcr.version.ReadWriteVersionManager.removeVersion(ReadWriteVersionManager.java:239) at org.apache.jackrabbit.oak.jcr.delegate.VersionManagerDelegate.removeVersion(VersionManagerDelegate.java:226) at org.apache.jackrabbit.oak.jcr.delegate.VersionHistoryDelegate.removeVersion(VersionHistoryDelegate.java:209) at org.apache.jackrabbit.oak.jcr.version.VersionHistoryImpl$11.performVoid(VersionHistoryImpl.java:240) at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.performVoid(SessionDelegate.java:266) at org.apache.jackrabbit.oak.jcr.version.VersionHistoryImpl.removeVersion(VersionHistoryImpl.java:236) at com.day.cq.wcm.core.impl.VersionManagerImpl.purgeVersions(VersionManagerImpl.java:380) at com.day.cq.wcm.core.impl.VersionManagerImpl.purgeVersions(VersionManagerImpl.java:346) at com.day.cq.wcm.core.impl.VersionManagerImpl.purgeVersions(VersionManagerImpl.java:338) at com.day.cq.wcm.core.impl.VersionManagerImpl.purgeVersions(VersionManagerImpl.java:569) at com.day.cq.wcm.core.impl.VersionManagerImpl.onEvent(VersionManagerImpl.java:329) at org.apache.jackrabbit.commons.observation.ListenerTracker$1.onEvent(ListenerTracker.java:164) at org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor.contentChanged(ChangeProcessor.java:316) at org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:131) at org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:125) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Locked ownable synchronizers: - <0x00000005c23fd400> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) - <0x00000005c24ad9d0> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) - <0x00000005c6039780> (a java.util.concurrent.ThreadPoolExecutor$Worker)
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