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https://issues.apache.org/jira/browse/SOLR-4260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581189#comment-13581189
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Markus Jelsma commented on SOLR-4260:
-------------------------------------
Here's the index information for two cores of the same shard, running on
different nodes.
{code}
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">1</int>
</lst>
<lst name="index">
<int name="numDocs">117744</int>
<int name="maxDoc">118160</int>
<int name="deletedDocs">416</int>
<long name="version">3802</long>
<int name="segmentCount">15</int>
<bool name="current">true</bool>
<bool name="hasDeletions">true</bool>
<str
name="directory">org.apache.lucene.store.NRTCachingDirectory:NRTCachingDirectory(org.apache.lucene.store.MMapDirectory@/opt/solr/cores/shard_h/data/index.20130211094737738
lockFactory=org.apache.lucene.store.NativeFSLockFactory@2ca7563d;
maxCacheMB=48.0 maxMergeSizeMB=4.0)</str>
<lst name="userData">
<str name="commitTimeMSec">1361265544970</str>
</lst>
<date name="lastModified">2013-02-19T09:19:04.97Z</date>
</lst>
</response>
{code}
{code}
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">0</int>
</lst>
<lst name="index">
<int name="numDocs">117767</int>
<int name="maxDoc">118181</int>
<int name="deletedDocs">414</int>
<long name="version">3772</long>
<int name="segmentCount">13</int>
<bool name="current">true</bool>
<bool name="hasDeletions">true</bool>
<str
name="directory">org.apache.lucene.store.NRTCachingDirectory:NRTCachingDirectory(org.apache.lucene.store.MMapDirectory@/opt/solr/cores/shard_h/data/index.20130211105622621
lockFactory=org.apache.lucene.store.NativeFSLockFactory@684b4388;
maxCacheMB=48.0 maxMergeSizeMB=4.0)</str>
<lst name="userData">
<str name="commitTimeMSec">1361265544937</str>
</lst>
<date name="lastModified">2013-02-19T09:19:04.937Z</date>
</lst>
</response>
{code}
We send updates/deletes to the cluster every 10-15 minutes. The shard will not
become synchronized, unless i remove the index of one of the nodes.
> 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
>
>
> 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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