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Posted to issues@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2019/02/01 19:43:05 UTC

[jira] [Updated] (HBASE-20546) Improve perf of RegionLocationFinder.mapHostNameToServerName

     [ https://issues.apache.org/jira/browse/HBASE-20546?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell updated HBASE-20546:
-----------------------------------
    Fix Version/s:     (was: 1.5.0)
                   1.5.1

> Improve perf of RegionLocationFinder.mapHostNameToServerName
> ------------------------------------------------------------
>
>                 Key: HBASE-20546
>                 URL: https://issues.apache.org/jira/browse/HBASE-20546
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 1.4.4, 2.0.0
>            Reporter: Thiruvel Thirumoolan
>            Assignee: Thiruvel Thirumoolan
>            Priority: Major
>             Fix For: 1.5.1
>
>         Attachments: HBASE-20546.branch-1.4.001.patch
>
>
> RegionLocationFinder.getTopBlockLocations() is called multiple times during balancer. While profiling on a large table balance, mapHostNameToServerName() seem to take a lot of time. One of the maps is repeatedly created for each iteration, while we can just initialize it once.
> Goes into both branch-1 and branch-2, although patches differ slightly.



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