solr.xml persistence is broken for multicore (by SOLR-2331)
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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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