[jira] Updated: (HADOOP-6803) ZlibCompressor hangs on close

["Eli Collins (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-6803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eli Collins updated HADOOP-6803:
--------------------------------

    Attachment: hadoop-6803-1.patch

Patch attached.

> ZlibCompressor hangs on close
> -----------------------------
>
>                 Key: HADOOP-6803
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6803
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: 0.21.0, 0.22.0
>
>         Attachments: hadoop-6803-1.patch
>
>
> Looking at ZlibCompressor I noticed that the finished member is never modified, and is therefore always false. This means ZlibCompressor#finished will always return false so CompressorStream#close loops indefinitely in finish:
> {code} 
>       while (!compressor.finished()) {
>         compress();
>       }
> {code}
> I modifed TestCodec#testGzipCodecWrite to also cover writing using the native lib and confirmed the hang with jstack. The fix is simple, ZlibCompressor should record when it's been finished.

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