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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (COMPRESS-343) Native Memory Leak in Sevenz-DeflateDecoder
Date Thu, 17 Mar 2016 09:34:33 GMT


ASF GitHub Bot commented on COMPRESS-343:

Github user bodewig commented on the pull request:
    I had naively assumed `InflaterInputStream#close` would free up the resources. Come to
think of it, if we pass in the `Inflater` ourselves it makes sense that we are responsible
for cleanup.
    Many thanks!
    I'll grep through the code to ensure the same kind of bug doesn't hit us anywhere else.

> Native Memory Leak in Sevenz-DeflateDecoder
> -------------------------------------------
>                 Key: COMPRESS-343
>                 URL:
>             Project: Commons Compress
>          Issue Type: Bug
>          Components: Archivers
>    Affects Versions: 1.10
>            Reporter: Rene Preissel
>         Attachments: COMPRESS-343.patch
> The class ...sevenz.Coders.DeflateDecoder does not close (end()) the Deflater and Inflater.
This can lead to native memory issues: see
> In our case we create a zip archive with >100000 files. The Java heap is around 300MB
(with 2GB max). The native memory is increasing to 8GB and above. Because the Java heap has
no pressure - no GC is triggered, therefore the Deflaters are not collected and the native
memory is not freed.  

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