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https://issues.apache.org/jira/browse/SOLR-12642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cao Manh Dat updated SOLR-12642:
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Attachment: master-branch.log
http2-branch.log
> SolrCmdDistributor should send updates in batch when use Http2SolrClient?
> -------------------------------------------------------------------------
>
> Key: SOLR-12642
> URL: https://issues.apache.org/jira/browse/SOLR-12642
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Cao Manh Dat
> Priority: Major
> Attachments: http2-branch.log, master-branch.log
>
>
> In the past, batch updates are sent in a single stream from the leader, the
> replica will create a single thread to parse all the updates. For the
> simplicity of {{SOLR-12605}}, the leader is now sending individual updates to
> replicas, therefore they are now parsing updates in different threads which
> increase the usage of memory and CPU.
> In the past, this is an unacceptable approach, because, for every update, we
> must create different connections to replicas. But with the support of
> HTTP/2, all updates will be sent in a single connection from leader to a
> replica. Therefore the cost is not as high as it used to be.
> On the other hand, sending individual updates will improve the indexing
> performance and better error-handling for failures of a single update in a
> batch.
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