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From "Pushkar Raste (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (SOLR-9310) PeerSync fails on a node restart due to IndexFingerPrint mismatch
Date Sun, 25 Sep 2016 12:52:20 GMT

    [ https://issues.apache.org/jira/browse/SOLR-9310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15520747#comment-15520747
] 

Pushkar Raste edited comment on SOLR-9310 at 9/25/16 12:51 PM:
---------------------------------------------------------------

I went through logs at https://jenkins.thetaphi.de/job/Lucene-Solr-6.x-MacOSX/429/consoleFull

If PeerSync was unsuccessful I would expect to see a line like 
{{o.a.s.u.PeerSync Fingerprint comparison: -1}} 

However, I don't see such line. I could think of two scenarios that could break the test 
* data directory could get deleted while a node is brought down, since data directory is created
in {{temp}}. Upon restart replica would have no frame of reference and will have to fall back
on replication.
* we need a better check than relying number of requests made to {{ReplicationHandler}}



was (Author: praste):
I went through logs in the failed test email notification but those are truncated. Where can
I look at the entire build.log for the test. 

Only thing I could think of at this point is data directory could get deleted while a node
is brought down, since data directory is created in {{temp}}. Upon restart replica would have
no frame of reference and will have to fall back on replication.



> 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: 5.5.3, 6.3, trunk
>
>         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_5x.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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