hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10116) SlabCache metrics improvements
Date Tue, 10 Dec 2013 18:58:08 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13844542#comment-13844542
] 

Nick Dimiduk commented on HBASE-10116:
--------------------------------------

I'll point out that Oracle JDK6 (1.6.0_31 in my test) doesn't expose "java.nio:type=BufferPool,name=direct",
so DirectMemoryUtils#getDirectMemoryUsage (and thus the change to rs-status#memoryStats) reports
0 on that environment. This might be a point of confusion for users.

> SlabCache metrics improvements
> ------------------------------
>
>                 Key: HBASE-10116
>                 URL: https://issues.apache.org/jira/browse/HBASE-10116
>             Project: HBase
>          Issue Type: Improvement
>          Components: metrics, regionserver
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>            Priority: Minor
>             Fix For: 0.98.0, 0.96.2, 0.99.0
>
>         Attachments: HBASE-10116.00.patch
>
>
> SlabCache incorrectly reports block count and could do a better job reporting free size.
MetricsRegionServerWrapperImpl incorrectly reports block cache count. Expose Direct Memory
stats on RegionServer WebUI.
> Also clean up javadoc on BlockCache interface methods, and whitespace in cache-related
classes.



--
This message was sent by Atlassian JIRA
(v6.1.4#6159)

Mime
View raw message