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Posted to dev@lucene.apache.org by "Cao Manh Dat (JIRA)" <ji...@apache.org> on 2017/12/09 07:28:00 UTC
[jira] [Commented] (SOLR-11661) Race condition between core
creation thread and recovery request from leader causes inconsistent view
of documents
[ https://issues.apache.org/jira/browse/SOLR-11661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16284644#comment-16284644 ]
Cao Manh Dat commented on SOLR-11661:
-------------------------------------
This bug relates to HDFS lease recovery. When tlog files of a replica (core_node7 in this case) get deleted and get recovered when a new collection of the same name gets created.
[~markrmiller@gmail.com] : for newly created core, should we skip lease recovery??
> Race condition between core creation thread and recovery request from leader causes inconsistent view of documents
> ------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-11661
> URL: https://issues.apache.org/jira/browse/SOLR-11661
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Fix For: 7.2, master (8.0)
>
> Attachments: 11458-2-MoveReplicaHDFSTest-log.txt
>
>
> While testing SOLR-11458, [~ab] ran into an interesting failure which resulted in different document counts between leader and replica. The test is MoveReplicaHDFSTest on jira/solr-11458-2 branch.
> The failure is rare but reproducible on beasting:
> {code}
> reproduce with: ant test -Dtestcase=MoveReplicaHDFSTest -Dtests.method=testNormalFailedMove -Dtests.seed=161856CB543CD71C -Dtests.slow=true -Dtests.locale=ar-SA -Dtests.timezone=US/Michigan -Dtests.asserts=true -Dtests.file.encoding=ISO-8859-1
> [junit4] FAILURE 14.2s | MoveReplicaHDFSTest.testNormalFailedMove <<<
> [junit4] > Throwable #1: java.lang.AssertionError: expected:<100> but was:<56>
> [junit4] > at __randomizedtesting.SeedInfo.seed([161856CB543CD71C:31134983787E4905]:0)
> [junit4] > at org.apache.solr.cloud.MoveReplicaTest.testFailedMove(MoveReplicaTest.java:305)
> [junit4] > at org.apache.solr.cloud.MoveReplicaHDFSTest.testNormalFailedMove(MoveReplicaHDFSTest.java:69)
> {code}
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