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https://issues.apache.org/jira/browse/DIRMINA-1103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emmanuel Lecharny resolved DIRMINA-1103.
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Resolution: Fixed
Fix Version/s: 2.0.21
This has been fixed a while ago with commits
bdc43e6d0953d43171e61204d4791274f6ae22b9 (2.0) and in 2.1
> Avoid sticky byte array buffers in Zlib CompressionFilter
> ---------------------------------------------------------
>
> Key: DIRMINA-1103
> URL: https://issues.apache.org/jira/browse/DIRMINA-1103
> Project: MINA
> Issue Type: Improvement
> Affects Versions: 2.0.21
> Reporter: Jörg Michelberger
> Priority: Major
> Fix For: 2.0.21
>
>
> For each Zlib instance there is a zStream instance which is equipped with new
> buffers for each in and out of inflate / deflate. This buffers are not
> released after each inflate / deflate. So the last compressed and
> uncompressed byte[] and its content for rx and tx is not garbage collectable
> on each session.
> It would be great if there was a reset(zStream) method on Zlib which sets the
> in and out to static empty byte[] to release these buffers after usage quite
> before returning from Zlib.deflate and Zlib.inflate but in the synchronized
> block. Something like:
> {{private void resetZStream (zStream) {}}
> {{ zStream.next_in = EMPTY_BYTE_ARRAY;}}
> {{ zStream.next_in_index = 0;}}
> {{ zStream.avail_in = 0;}}
> {{ zStream.next_out = EMPTY_BYTE_ARRAY;}}
> {{ zStream.next_out_index = 0;}}
> {{ zStream.avail_out = 0;}}
> {{}}}
>
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