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Posted to common-issues@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2010/08/25 00:11:17 UTC

[jira] Updated: (HADOOP-6925) BZip2Codec incorrectly implements read()

     [ https://issues.apache.org/jira/browse/HADOOP-6925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon updated HADOOP-6925:
--------------------------------

    Attachment: hadoop-6925.txt

Patch fixes the read() implementation to correctly mask with 0xff before upcasting to int. Also augments the unit test to check the single-byte read() function - the new test fails before this patch.

> BZip2Codec incorrectly implements read()
> ----------------------------------------
>
>                 Key: HADOOP-6925
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6925
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>         Attachments: hadoop-6925.txt
>
>
> HADOOP-4012 added an implementation of read() in BZip2InputStream that doesn't work correctly when reading bytes > 0x80. This causes EOFExceptions when working with BZip2 compressed data inside of sequence files in some datasets.

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