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From "Yury Kats (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-2691) solr.xml persistence is broken for multicore (by SOLR-2331)
Date Wed, 03 Aug 2011 00:16:27 GMT
solr.xml persistence is broken for multicore (by SOLR-2331)
-----------------------------------------------------------

                 Key: SOLR-2691
                 URL: https://issues.apache.org/jira/browse/SOLR-2691
             Project: Solr
          Issue Type: Bug
          Components: multicore
    Affects Versions: 4.0
            Reporter: Yury Kats
            Priority: Critical


With the trunk build, running SolrCloud, if I issue a PERSIST CoreAdmin command,
the solr.xml gets overwritten with only the last core, repeated as many times
as there are cores.

It used to work fine with a trunk build from a couple of months ago, so it looks like
something broke solr.xml persistence. 

It appears to have been introduced by SOLR-2331:
CoreContainer#persistFile creates the map for core attributes (coreAttribs) outside 
of the loop that iterates over cores. Therefore, all cores reuse the same map of attributes
and hence only the values from the last core are preserved and used for all cores in the list.

I'm running SolrCloud, using:
-Dbootstrap_confdir=/opt/solr/solr/conf -Dcollection.configName=hcpconf -DzkRun

I'm starting Solr with four cores listed in solr.xml:

<solr persistent="true">
  <cores adminPath="/admin/cores" defaultCoreName="master1">
    <core name="master1" instanceDir="master1" shard="shard1" collection="hcpconf" />
    <core name="master2" instanceDir="master2" shard="shard2" collection="hcpconf" />
    <core name="slave1" instanceDir="slave1" shard="shard1" collection="hcpconf" />
    <core name="slave2" instanceDir="slave2" shard="shard2" collection="hcpconf" />
  </cores>
</solr>

I then issue a PERSIST request:
http://localhost:8983/solr/admin/cores?action=PERSIST

And the solr.xml turns into:

<solr persistent="true">
  <cores defaultCoreName="master1" adminPath="/admin/cores" zkClientTimeout="10000" hostPort="8983"
hostContext="solr">
    <core shard="shard2" instanceDir="slave2/" name="slave2" collection="hcpconf"/>
    <core shard="shard2" instanceDir="slave2/" name="slave2" collection="hcpconf"/>
    <core shard="shard2" instanceDir="slave2/" name="slave2" collection="hcpconf"/>
    <core shard="shard2" instanceDir="slave2/" name="slave2" collection="hcpconf"/>
  </cores>
</solr>

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