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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-4471) slave index version is different form master (full index copy needed)
Date Thu, 21 Feb 2013 22:18:12 GMT

    [ https://issues.apache.org/jira/browse/SOLR-4471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13583603#comment-13583603
] 

Mark Miller commented on SOLR-4471:
-----------------------------------

bq. Somebody agree? 

It's kind of a workaround, but there is more to this. I've already advanced a bit beyond this
though - I'm not using a soft commit, I'm just not doing that commit unless isFullCopyNeeded.
I'm running into an issue with the version though. Somehow, after the replication happens,
the commit timestamp we store is not getting set to the value of the index we replicated in
- it's like it's stale.
                
> slave index version is different form master (full index copy needed)
> ---------------------------------------------------------------------
>
>                 Key: SOLR-4471
>                 URL: https://issues.apache.org/jira/browse/SOLR-4471
>             Project: Solr
>          Issue Type: Bug
>          Components: replication (java)
>    Affects Versions: 4.1
>            Reporter: Andre Charton
>            Assignee: Mark Miller
>              Labels: master, replication, slave, version
>             Fix For: 4.2, 5.0
>
>         Attachments: SOLR-4471.patch
>
>
> Scenario: master/slave replication, master delta index runs every 10 minutes, slave poll
interval is 10 sec.
> There was an issue SOLR-4413 - slave reads index from wrong directory, so slave is full
copy index from master every time, which is fixed after applying this patch from 4413 (see
script below).
> Now on replication the slave downloads only updated files, but slave is create a new
segement file and also a new version of index (generation is identical with master). On next
polling the slave is download the full index again, because the new version slave is force
a full copy.
> Problem is the new version of index on the slave after first replication.
> {noformat:apply patch SOLR-4413 script, please copy patch into patches directory before
useage.}
> mkdir work
> cd work
> svn co http://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_1/
> cd lucene_solr_4_1
> patch -p0 < ../../patches/SOLR-4413.patch
> cd solr
> ant dist
> {noformat}

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