Mike Percy created HADOOP-8522:
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Summary: 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: 2.0.0-alpha, 1.0.3
Reporter: Mike Percy
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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