hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8406) CompressionCodecFactory.CODEC_PROVIDERS iteration is thread-unsafe
Date Thu, 17 May 2012 05:18:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13277578#comment-13277578
] 

Hudson commented on HADOOP-8406:
--------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #2274 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2274/])
    HADOOP-8406. CompressionCodecFactory.CODEC_PROVIDERS iteration is thread-unsafe. Contributed
by Todd Lipcon. (Revision 1339476)

     Result = ABORTED
todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1339476
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/CompressionCodecFactory.java

                
> CompressionCodecFactory.CODEC_PROVIDERS iteration is thread-unsafe
> ------------------------------------------------------------------
>
>                 Key: HADOOP-8406
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8406
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 2.0.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 2.0.1
>
>         Attachments: hadoop-8406.txt
>
>
> CompressionCodecFactory defines CODEC_PROVIDERS as:
> {code}
>   private static final ServiceLoader<CompressionCodec> CODEC_PROVIDERS =
>     ServiceLoader.load(CompressionCodec.class);
> {code}
> but this is a lazy collection which is thread-unsafe to iterate. We either need to synchronize
when we iterate over it, or we need to materialize it during class-loading time by copying
to a non-lazy collection

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message