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https://issues.apache.org/jira/browse/SOLR-3476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13281484#comment-13281484
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ludovic Boutros commented on SOLR-3476:
---------------------------------------
some examples of usages :
- Create a new core with a given commit point generation :
bq.
http://localhost:8084/solr/admin/cores?action=CREATE&name=core4&commitPointGeneration=4&instanceDir=test
- Get the status of this core :
bq. http://localhost:8084/solr/admin/cores?action=STATUS&core=core4
{code:xml}
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">2692</int>
</lst>
<lst name="status">
<lst name="core4">
<str name="name">core4</str>
<str name="instanceDir">D:\temp\bases\testCores\test\</str>
<str name="dataDir">D:\temp\bases\testCores\test\data\</str>
<date name="startTime">2012-05-23T09:31:50.483Z</date>
<long name="uptime">149054</long>
<long name="indexCommitGeneration">4</long>
<lst name="indexCommitList">
<long name="generation">1</long>
<long name="generation">2</long>
<long name="generation">3</long>
<long name="generation">4</long>
<long name="generation">5</long>
<long name="generation">6</long>
<long name="generation">7</long>
</lst>
<lst name="index">
<int name="numDocs">3</int>
<int name="maxDoc">3</int>
<long name="version">1337759534761</long>
<int name="segmentCount">3</int>
<bool name="current">false</bool>
<bool name="hasDeletions">false</bool>
<str
name="directory">org.apache.lucene.store.SimpleFSDirectory:org.apache.lucene.store.SimpleFSDirectory@D:\temp\bases\testCores\test\data\index
lockFactory=org.apache.lucene.store.NativeFSLockFactory@1c24b45</str>
<date name="lastModified">2012-05-23T09:22:10.713Z</date>
</lst>
</lst>
</lst>
</response>
{code}
We can see the current commit point generation and the available commit point
list.
- Now the solr.xml file :
{code:xml}
<solr sharedLib="lib" persistent="true">
<cores adminPath="/admin/cores">
<core name="core4" instanceDir="test\" commitPointGeneration="4"/>
</cores>
</solr>
{code}
> Create a Solr Core with a given commit point
> --------------------------------------------
>
> Key: SOLR-3476
> URL: https://issues.apache.org/jira/browse/SOLR-3476
> Project: Solr
> Issue Type: New Feature
> Components: multicore
> Affects Versions: 3.6
> Reporter: ludovic Boutros
> Attachments: commitPoint.patch
>
>
> In some configurations, we need to open new cores with a given commit point.
> For instance, when the publication of new documents must be controlled (legal
> obligations) in a master-slave configuration there are two cores on the same
> instanceDir and dataDir which are using two "versions" of the index.
> The switch of the two cores is done manually.
> The problem is that when the replication is done one day before the switch,
> if any problem occurs, and we need to restart tomcat, the new documents are
> published.
> With this functionality, we could ensure that the index generation used by
> the core used for querying is always the good one.
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