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https://issues.apache.org/jira/browse/SOLR-4260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13823959#comment-13823959
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Mark Miller commented on SOLR-4260:
-----------------------------------
bq. My problem is that I don't know how deal with the situation. I'm using a
non java client and I don't know how I can do debug or the tools that I can use
to give some information to help debug this issue.
I'm hoping to put together a guide on debugging some of the tests for this sort
of thing soon. Perhaps some of that will also be useful for debugging a live
installation. I sure could use the help - I have a lot on my plate at the
moment.
> Inconsistent numDocs between leader and replica
> -----------------------------------------------
>
> Key: SOLR-4260
> URL: https://issues.apache.org/jira/browse/SOLR-4260
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 5.0
> Environment: 5.0.0.2013.01.04.15.31.51
> Reporter: Markus Jelsma
> Priority: Critical
> Fix For: 5.0
>
> Attachments: 192.168.20.102-replica1.png,
> 192.168.20.104-replica2.png, clusterstate.png
>
>
> After wiping all cores and reindexing some 3.3 million docs from Nutch using
> CloudSolrServer we see inconsistencies between the leader and replica for
> some shards.
> Each core hold about 3.3k documents. For some reason 5 out of 10 shards have
> a small deviation in then number of documents. The leader and slave deviate
> for roughly 10-20 documents, not more.
> Results hopping ranks in the result set for identical queries got my
> attention, there were small IDF differences for exactly the same record
> causing a record to shift positions in the result set. During those tests no
> records were indexed. Consecutive catch all queries also return different
> number of numDocs.
> We're running a 10 node test cluster with 10 shards and a replication factor
> of two and frequently reindex using a fresh build from trunk. I've not seen
> this issue for quite some time until a few days ago.
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