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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15640) L1 cache doesn't give fair warning that it is showing partial stats only when it hits limit
Date Thu, 21 Apr 2016 02:10:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15251113#comment-15251113
] 

Hudson commented on HBASE-15640:
--------------------------------

FAILURE: Integrated in HBase-1.4 #105 (See [https://builds.apache.org/job/HBase-1.4/105/])
HBASE-15640 L1 cache doesn't give fair warning that it is showing (stack: rev 71c55d182d3b63c770b8ec9c5261b07e90ad83bf)
* hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/regionserver/BlockCacheTmpl.jamon
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderV2.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.java


> L1 cache doesn't give fair warning that it is showing partial stats only when it hits
limit
> -------------------------------------------------------------------------------------------
>
>                 Key: HBASE-15640
>                 URL: https://issues.apache.org/jira/browse/HBASE-15640
>             Project: HBase
>          Issue Type: Sub-task
>          Components: BlockCache
>            Reporter: stack
>            Assignee: stack
>             Fix For: 2.0.0, 1.3.0, 1.4.0, 1.2.2
>
>         Attachments: 15640.patch, Screen Shot 2016-04-12 at 4.21.50 PM.png, bc.ui (1).patch,
bc.ui.patch, bc.ui.v3.patch
>
>
> I was baffled looking at L1 Cache because it was stuck at 100k blocks and only 'loading'
3G of data according to the UI. When I looked in log, all the numbers looked write in the
Cache summary reported in log.
> Turns out our buckecache UI template will cut off calculating stats at a limit --which
is probably what we want -- but the fact that it has done this should be more plain.



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