[ https://issues.apache.org/jira/browse/OAK-3062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chetan Mehrotra updated OAK-3062: --------------------------------- Attachment: cursor-78740863820.log versiongc-oak.log Attaching * [Oak Logs|^versiongc-oak.log] * [Mongod Logs|^cursor-78740863820.log] Key thing to observe is that Mongo is using index on {{_modified}} instead of index on {{_deletedOnce}} {noformat} 2015-06-30T03:27:20.318-0400 [conn11654] query aem-author.nodes query: { _deletedOnce: true, _modified: { $lt: 1435562840 } } planSummary: IXSCAN { _modified: -1 } cursorid:78740863820 ntoreturn:0 ntoskip:0 nscanned:131 nscannedObjects:131 keyUpdates:0 numYields:32 locks(micros) r:58967 nreturned:101 reslen:73159 147ms {noformat} As a fix we should send a hint to make use of {{_deletedOnce}} index always > VersionGC failing on Mongo with CursorNotFoundException > ------------------------------------------------------- > > Key: OAK-3062 > URL: https://issues.apache.org/jira/browse/OAK-3062 > Project: Jackrabbit Oak > Issue Type: Bug > Components: mongomk > Reporter: Chetan Mehrotra > Assignee: Chetan Mehrotra > Fix For: 1.2.3, 1.3.3, 1.0.17 > > Attachments: cursor-78740863820.log, versiongc-oak.log > > > At times the VersionGC on big repository fails with following exception > {noformat} > 30.06.2015 03:55:59.253 *INFO* [pool-7-thread-132] > org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector Iterated > through 440000 documents so far. 410668 found to be deleted > com.mongodb.MongoException$CursorNotFound: Cursor 78740863820 not found on > server mongo2.aem.lan.tpa.foxnews.com:27017 > at > com.mongodb.QueryResultIterator.throwOnQueryFailure(QueryResultIterator.java:218) > at com.mongodb.QueryResultIterator.init(QueryResultIterator.java:198) > at > com.mongodb.QueryResultIterator.initFromQueryResponse(QueryResultIterator.java:176) > at com.mongodb.QueryResultIterator.getMore(QueryResultIterator.java:141) > at com.mongodb.QueryResultIterator.hasNext(QueryResultIterator.java:127) > at com.mongodb.DBCursor._hasNext(DBCursor.java:551) > at com.mongodb.DBCursor.hasNext(DBCursor.java:571) > at > com.google.common.collect.TransformedIterator.hasNext(TransformedIterator.java:43) > at > org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector.collectDeletedDocuments(VersionGarbageCollector.java:110) > at > org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector.gc(VersionGarbageCollector.java:85) > at > org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreService$2.run(DocumentNodeStoreService.java:503) > at > org.apache.jackrabbit.oak.spi.state.RevisionGC$1.call(RevisionGC.java:68) > at > org.apache.jackrabbit.oak.spi.state.RevisionGC$1.call(RevisionGC.java:64) > at java.util.concurrent.FutureTask.run(FutureTask.java:262) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:745) > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)