Hari Shreedharan created HADOOP-10591:
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Summary: Compression codecs must used pooled direct buffers or
deallocate direct buffers when stream is closed
Key: HADOOP-10591
URL: https://issues.apache.org/jira/browse/HADOOP-10591
Project: Hadoop Common
Issue Type: Bug
Reporter: Hari Shreedharan
Currently direct buffers allocated by compression codecs like Gzip (which
allocates 2 direct buffers per instance) are not deallocated when the stream is
closed. Eventually for long running processes which create a huge number of
files, these direct buffers are left hanging till a full gc, which may or may
not happen in a reasonable amount of time - especially if the process does not
use a whole lot of heap.
Either these buffers should be pooled or they should be deallocated when the
stream is closed.
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