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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14611) Backport HBASE-14473 (Compute region locality in parallel) to 0.98
Date Tue, 10 Nov 2015 17:11:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14998920#comment-14998920

Hudson commented on HBASE-14611:

FAILURE: Integrated in HBase-0.98-matrix #258 (See [https://builds.apache.org/job/HBase-0.98-matrix/258/])
HBASE-14611 Backport HBASE-14473 (Compute region locality in parallel) (apurtell: rev 70b9015a0ec8de5ed9f9d9302b67b8e79bc4c558)
* hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/RegionLocationFinder.java

> Backport HBASE-14473 (Compute region locality in parallel) to 0.98
> ------------------------------------------------------------------
>                 Key: HBASE-14611
>                 URL: https://issues.apache.org/jira/browse/HBASE-14611
>             Project: HBase
>          Issue Type: Task
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>             Fix For: 0.98.16
>         Attachments: HBASE-14611-0.98.patch
> [~eclark] contributed a nice change on HBASE-14473 that scales calculation of locality
balance cost to larger clusters. I'd like to bring this back to 0.98 for folks running it
on larger clusters. The changes require a partial rewrite of RegionLocationFinder hence a
backport issue.
> The difference between this backport and RegionLocationFinder on later branches is we
preserve the ability to change the expiration time of cache items with the configuration parameter
> The difference between RegionLocationFinder in 0.98 before and after this change is the
expiration time of cache entries will be set according to when they are written into the cache
instead of from when they are last accessed, which seems better to me.

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