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From Mark Miller <>
Subject Re: Replication of full index to replica after merge index into leader not working
Date Tue, 19 Aug 2014 17:33:08 GMT
I’d just file a JIRA. Merge, like optimize and a few other things, were never tested or considered
in early SolrCloud days. It’s used in the HDFS stuff, but in that case, the index is merged
to all replicas and no recovery is necessary.

If you want to make the local filesystem merge work well with SolrCloud, sounds like we should
write a test and make it work.

Mark Miller

On August 19, 2014 at 1:20:54 PM, Timothy Potter ( wrote:
> Hi,
> Using the coreAdmin mergeindexes command to merge an index into a
> leader (SolrCloud mode on 4.9.0) and the replica does not do a snap
> pull from the leader as I would have expected. The merge into the
> leader worked like a charm except I had to send a hard commit after
> that (which makes sense).
> I'm guessing the replica would snap pull from the leader if I
> restarted it, but reloading the collection or core does not trigger
> the replica to pull from the leader. This seems like an oversight in
> the mergeindex interaction with SolrCloud. Seems like the simplest
> would be for the leader to send all replicas a request recovery
> command after performing the merge.
> Advice?
> Cheers,
> Tim

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