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https://issues.apache.org/jira/browse/SOLR-6606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cao Manh Dat updated SOLR-6606:
-------------------------------
Attachment: SOLR-6606.patch
Updated patch for this issue. This patch updated to lastest source and fixed
some bugs :
- set DistributedUpdateProcessor.COMMIT_END_POINT flag to distributed commit,
so replica won't resend the commit back to leader
- increase retryCount in consistencyCheck()
- added a test ( which currently failed ) to make sure segments are line up in
very simple case of adding one by one new documents
The test is failed because between the IW.commit() and open a new searcher in
the replicas side. They can received some new documents so when they open a new
searcher they may create a new segment ( which have different of documents for
each replicas ) so segments between replicas is never be lined up.
The test is failed so often, hence I think in the real world we won't never get
a single benefit from this patch.
> In cloud mode the leader should distribute autoCommits to it's replicas
> -----------------------------------------------------------------------
>
> Key: SOLR-6606
> URL: https://issues.apache.org/jira/browse/SOLR-6606
> Project: Solr
> Issue Type: Improvement
> Reporter: Varun Thacker
> Fix For: 5.0, 6.0
>
> Attachments: SOLR-6606.patch, SOLR-6606.patch, SOLR-6606.patch
>
>
> Today in SolrCloud different replicas of a shard can trigger auto (hard)
> commits at different times. Although the documents which get added to the
> system remain consistent the way the segments gets formed can be different
> because of this.
> The downside of segments not getting formed in an identical fashion across
> replicas is that when a replica goes into recovery chances are that it has to
> do a full index replication from the leader. This is time consuming and we
> can possibly avoid this if the leader forwards auto (hard) commit commands to
> it's replicas and the replicas never explicitly trigger an auto (hard) commit.
> I am working on a patch. Should have it up shortly
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