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Posted to common-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2015/05/02 06:21:11 UTC
[jira] [Commented] (HADOOP-8522) ResetableGzipOutputStream creates
invalid gzip files when finish() and resetState() are used
[ https://issues.apache.org/jira/browse/HADOOP-8522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14524555#comment-14524555 ]
Hadoop QA commented on HADOOP-8522:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch | 0m 0s | The patch command could not apply the patch during dryrun. |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12532858/HADOOP-8522-2a.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / f1a152c |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/6256/console |
This message was automatically generated.
> ResetableGzipOutputStream creates invalid gzip files when finish() and resetState() are used
> --------------------------------------------------------------------------------------------
>
> Key: HADOOP-8522
> URL: https://issues.apache.org/jira/browse/HADOOP-8522
> Project: Hadoop Common
> Issue Type: Bug
> Components: io
> Affects Versions: 1.0.3, 2.0.0-alpha
> Reporter: Mike Percy
> Assignee: Mike Percy
> Attachments: HADOOP-8522-2a.patch
>
>
> ResetableGzipOutputStream creates invalid gzip files when finish() and resetState() are used. The issue is that finish() flushes the compressor buffer and writes the gzip CRC32 + data length trailer. After that, resetState() does not repeat the gzip header, but simply starts writing more deflate-compressed data. The resultant files are not readable by the Linux "gunzip" tool. ResetableGzipOutputStream should write valid multi-member gzip files.
> The gzip format is specified in [RFC 1952|https://tools.ietf.org/html/rfc1952].
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