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From Jan Høydahl (Commented) (JIRA) <j...@apache.org>
Subject [jira] [Commented] (SOLR-2326) Replication command indexversion fails to return index version
Date Wed, 29 Feb 2012 11:15:57 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13219102#comment-13219102
] 

Jan Høydahl commented on SOLR-2326:
-----------------------------------

We're seeing also the same here on a 3.5 master: {{indexversion}} command returns 0, while
the {{details}} command shows correct versions. Have not verified that it's because of locking,
but based on behaviour and code inspection I'm pretty sure we don't get a valid commitPoint.
Tried optimize on master, and also multiple reload cores, but it does not help. A restart
of master did not help either.

So seems we should clean up the locking in {{forceOpenWriter()}} to make sure we always have
a valid commit point.
And should we get {{commitPoint == null}} it would be better to fetch versions from the {{getIndexVersion()}}
method than returning 0 wouldn't it?
                
> Replication command indexversion fails to return index version
> --------------------------------------------------------------
>
>                 Key: SOLR-2326
>                 URL: https://issues.apache.org/jira/browse/SOLR-2326
>             Project: Solr
>          Issue Type: Bug
>          Components: replication (java)
>         Environment: Branch 3x latest
>            Reporter: Eric Pugh
>            Assignee: Mark Miller
>             Fix For: 3.6, 4.0
>
>
> To test this, I took the /example/multicore/core0 solrconfig and added a simple replication
handler:
>   <requestHandler name="/replication" class="solr.ReplicationHandler" >
>       <lst name="master">
>         <str name="replicateAfter">commit</str>
>         <str name="replicateAfter">startup</str>
>         <str name="confFiles">schema.xml</str>
>       </lst>
>   </requestHandler>
> When I query the handler for details I get back the indexVersion that I expect: http://localhost:8983/solr/core0/replication?command=details&wt=json&indent=true
> But when I ask for just the indexVersion I get back a 0, which prevent the slaves from
pulling updates: http://localhost:8983/solr/core0/replication?command=indexversion&wt=json&indent=true

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