Yejun Yang created HADOOP-12007:
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Summary: GzipCodec native CodecPool leaks memory
Key: HADOOP-12007
URL: https://issues.apache.org/jira/browse/HADOOP-12007
Project: Hadoop Common
Issue Type: Bug
Reporter: Yejun Yang
org/apache/hadoop/io/compress/GzipCodec.java call
CompressionCodec.Util.createOutputStreamWithCodecPool to use CodecPool. But
compressor objects are actually never returned to pool which cause memory leak.
HADOOP-10591 uses CompressionOutputStream.close() to return Compressor object
to pool. But CompressionCodec.Util.createOutputStreamWithCodecPool actually
returns a CompressorStream which overrides close().
This cause CodecPool.returnCompressor never being called. In my log file I can
see lots of "Got brand-new compressor [.gz]" but no "Got recycled compressor".
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