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https://issues.apache.org/jira/browse/SOLR-6816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14233691#comment-14233691
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Shalin Shekhar Mangar commented on SOLR-6816:
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Thank you for looking into this.
bq. The VersionInfo bucket size appears to be a large bottleneck with
replication (we lock on this bucket in DistributedUpdateProcessor for the
entire document add).
I met a few folks during recent Solr meetups who were comparing SolrCloud
indexing with non-cloud master node indexing and this was one of their biggest
bottlenecks according to them.
> Review SolrCloud Indexing Performance.
> --------------------------------------
>
> Key: SOLR-6816
> URL: https://issues.apache.org/jira/browse/SOLR-6816
> Project: Solr
> Issue Type: Task
> Components: SolrCloud
> Reporter: Mark Miller
> Priority: Critical
> Attachments: SolrBench.pdf
>
>
> We have never really focused on indexing performance, just correctness and
> low hanging fruit. We need to vet the performance and try to address any
> holes.
> Note: A common report is that adding any replication is very slow.
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