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https://issues.apache.org/jira/browse/SOLR-2326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12985518#action_12985518
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Eric Pugh commented on SOLR-2326:
---------------------------------
Mark, thanks for taking a look at this. I've been dinking around with this
bug, and I think it's because I am using the MERGE command to merge two indexes
together. When I do that, then I get the indexVersion 0. After doing a merge,
even after adding a new document and doing a commit it doesn't work. I think
it has to do with these lines from ReplicationHandler and a lack of a
commitPoint:
if (commitPoint != null && replicationEnabled.get()) {
//
// There is a race condition here. The commit point may be changed /
deleted by the time
// we get around to reserving it. This is a very small window though,
and should not result
// in a catastrophic failure, but will result in the client getting an
empty file list for
// the CMD_GET_FILE_LIST command.
//
core.getDeletionPolicy().setReserveDuration(commitPoint.getVersion(),
reserveCommitDuration);
rsp.add(CMD_INDEX_VERSION, commitPoint.getVersion());
rsp.add(GENERATION, commitPoint.getGeneration());
} else {
// This happens when replication is not configured to happen after
startup and no commit/optimize
// has happened yet.
rsp.add(CMD_INDEX_VERSION, 0L);
rsp.add(GENERATION, 0L);
}
> 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: 3.1
>
>
> 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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