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https://issues.apache.org/jira/browse/SOLR-9591?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15552442#comment-15552442
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Kevin Risden commented on SOLR-9591:
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It looks like you have an autocommit enabled every 15000ms. If you disable the
autocommit does that let you index more documents? Are there any errors in the
ZooKeeper logs?
> Shards and replicas go down when indexing large number of files
> ---------------------------------------------------------------
>
> Key: SOLR-9591
> URL: https://issues.apache.org/jira/browse/SOLR-9591
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: 5.5.2
> Reporter: Khalid Alharbi
> Attachments: solr_log_20161002_1504
>
>
> Solr shards and replicas go down when indexing a large number of text files
> using the default [extracting request
> handler|https://cwiki.apache.org/confluence/x/c4DxAQ].
> {code}
> curl
> 'http://localhost:8983/solr/myCollection/update/extract?literal.id=someId' -F
> "myfile=/data/file1.txt"
> {code}
> and committing after indexing 5,000 files using:
> {code}
> curl 'http://localhost:8983/solr/myCollection/update?commit=true&wt=json'
> {code}
> This was on Solr (SolrCloud) version 5.5.2 with an external zookeeper cluster
> of five nodes. I also tried this on a single node SolrCloud with the embedded
> ZooKeeper but the collection went down as well. In both cases the error
> message is always "ERROR null DistributedUpdateProcessor ClusterState says we
> are the leader, but locally we don't think so"
> I managed to come up with a work around that helped me index over 400K files
> without getting replicas down with that error message. The work around is to
> index 5K files, restart Solr, wait for shards and replicas to get active,
> then index the next 5K files, and repeat the previous steps.
> If this is not enough to investigate this issue, I will be happy to provide
> more details regarding this issue.
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