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https://issues.apache.org/jira/browse/HADOOP-8522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13415711#comment-13415711
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Mike Percy commented on HADOOP-8522:
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Apologies for the delay in following up on this.
Tom, do you expect GzipCodec to be able to read multi-member gzip files on
JDK1.6 without native libs installed?
> 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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