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https://issues.apache.org/jira/browse/HBASE-5628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13246248#comment-13246248
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Jonathan Hsieh commented on HBASE-5628:
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- parallelize the reads of .regioninfo files in the "diagnostic" section of
repairs.
> Improve performance of uberhbck
> -------------------------------
>
> Key: HBASE-5628
> URL: https://issues.apache.org/jira/browse/HBASE-5628
> Project: HBase
> Issue Type: Improvement
> Components: hbck
> Affects Versions: 0.90.7, 0.92.2, 0.94.0, 0.96.0
> Reporter: Jonathan Hsieh
>
> During reviews of HBASE-5128 there are several opportunities investigate for
> improving the performance of the tool.
> - Change regionInfoMap and tablesInfo from TreeMap to HashMap.
> - Change some full region set reloads to be incremental to require fewer
> passes.
> - Cache meta for subsequent calls of closeRegionSileneglyAndWait
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