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Posted to common-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2013/04/01 01:13:15 UTC

[jira] [Updated] (HADOOP-9401) CodecPool: Add counters for number of (de)compressors leased out

     [ https://issues.apache.org/jira/browse/HADOOP-9401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla updated HADOOP-9401:
-------------------------------------

    Attachment: hadoop-9401.patch

Exclude the findbugs warning:
- get() can't return null because we put a value just before calling get() and there are no remove() calls.
                
> CodecPool: Add counters for number of (de)compressors leased out
> ----------------------------------------------------------------
>
>                 Key: HADOOP-9401
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9401
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 2.0.3-alpha
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>         Attachments: hadoop-9401.patch, hadoop-9401.patch, hadoop-9401.patch
>
>
> CodecPool enables reusing compressors/decompressors created. However, the onus is on the user to return the compressors/decompressors to the pool, and can be easily missed.
> It would be quite handy to keep track of the total number of compressors/decompressors created and helper methods to check outstanding (not returned) compressors/decompressors. It immediately allows Hadoop and downstream projects to write unit tests for the same.

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