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https://issues.apache.org/jira/browse/HBASE-16832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15573644#comment-15573644
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binlijin commented on HBASE-16832:
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When one of our production cluster encounter the meta performance problem, many
of the getRegionLocation calls timeout.
First i pick up a regionserver and change hbase.meta.versions=1 and
hbase.regionserver.metahandler.count=90.
Then restart the regionserver and move meta region to this regionserver, so
there is only the meta region on this regionserver, then major_compact the meta
table.
hbase(main):002:0> major_compact 'hbase:meta'
0 row(s) in 1284.1590 seconds
hbase(main):003:0>
> Reduce the default number of versions in Meta table for branch-1
> ----------------------------------------------------------------
>
> Key: HBASE-16832
> URL: https://issues.apache.org/jira/browse/HBASE-16832
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 1.3.0
> Reporter: binlijin
> Assignee: binlijin
> Attachments: rpc-handler.png, rpc_processingCallTime.png,
> rpc_qps.png, rpc_scan_latency.png, rpc_totalcalltime.png
>
>
> I find the DEFAULT_HBASE_META_VERSIONS is still 10 in branch-1, and in master
> version DEFAULT_HBASE_META_VERSIONS is 3.
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