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From "David Smiley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-9310) PeerSync fails on a node restart due to IndexFingerPrint mismatch
Date Mon, 22 Aug 2016 18:00:24 GMT

    [ https://issues.apache.org/jira/browse/SOLR-9310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15431306#comment-15431306
] 

David Smiley commented on SOLR-9310:
------------------------------------

I see the double-check locking pattern there... I believe ConcurrentHashMap.computeIfAbsent
would be perfect in this case?

> PeerSync fails on a node restart due to IndexFingerPrint mismatch
> -----------------------------------------------------------------
>
>                 Key: SOLR-9310
>                 URL: https://issues.apache.org/jira/browse/SOLR-9310
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Pushkar Raste
>            Assignee: Noble Paul
>             Fix For: trunk, 6.3
>
>         Attachments: PeerSync_3Node_Setup.jpg, PeerSync_Experiment.patch, SOLR-9310.patch,
SOLR-9310.patch, SOLR-9310.patch, SOLR-9310.patch, SOLR-9310.patch, SOLR-9310.patch, SOLR-9310_3ReplicaTest.patch,
SOLR-9310_final.patch
>
>
> I found that Peer Sync fails if a node restarts and documents were indexed while node
was down. IndexFingerPrint check fails after recovering node applies updates. 
> This happens only when node restarts and not if node just misses updates due reason other
than it being down.
> Please check attached patch for the test.



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