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https://issues.apache.org/jira/browse/HBASE-8680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13674564#comment-13674564
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Himanshu Vashishtha commented on HBASE-8680:
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The last patch looks to be of a different jira?
> distributedLogReplay performance regression
> -------------------------------------------
>
> Key: HBASE-8680
> URL: https://issues.apache.org/jira/browse/HBASE-8680
> Project: HBase
> Issue Type: Bug
> Components: MTTR
> Reporter: Jeffrey Zhong
> Assignee: Jeffrey Zhong
> Fix For: 0.98.0, 0.95.2
>
> Attachments: 8680-v2.patch, hbase-8666-v3.patch, hbase-8680.patch
>
>
> The JIRA is to check in changes to address performance issues found during my
> performance testing as following:
> 1) When WALEdits belongs to a region which split/merged later incur extra
> waitUntilRegionOnline RPC call
> 2) Using a single shared connection for replaying archives better
> performance. Everytime creating a new connection, it incurs 4+ seconds to
> establish a connection to ZK.
> 3) other small modifications to mitigate excessive logging
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