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Posted to hdfs-issues@hadoop.apache.org by "Andrew Wang (JIRA)" <ji...@apache.org> on 2013/11/09 11:24:18 UTC

[jira] [Updated] (HDFS-5320) Add datanode caching metrics

     [ https://issues.apache.org/jira/browse/HDFS-5320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Wang updated HDFS-5320:
------------------------------

    Attachment: hdfs-5320-3.patch

New patch rebased on the FsDatasetCache changes. It's not much code, but I did also choose to rename dnCacheCapacity/dnCacheUsed to just cacheCapacity/cacheUsed for conciseness.

New tests check that the DN metrics tick up correctly, and I checked that they're visible in /jmx too.

> Add datanode caching metrics
> ----------------------------
>
>                 Key: HDFS-5320
>                 URL: https://issues.apache.org/jira/browse/HDFS-5320
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>    Affects Versions: 3.0.0
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>            Priority: Minor
>         Attachments: hdfs-5320-1.patch, hdfs-5320-2.patch, hdfs-5320-3.patch
>
>
> It'd be good to hook up datanode metrics for # (blocks/bytes) (cached/uncached/failed to cache) over different time windows (eternity/1hr/10min/1min).



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