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From "Evan Pollan (JIRA)" <>
Subject [jira] [Updated] (CURATOR-354) GzipCompressionProvider leaks native memory
Date Thu, 06 Oct 2016 20:42:20 GMT


Evan Pollan updated CURATOR-354:
    Attachment: RSS before and after fix.png

> GzipCompressionProvider leaks native memory
> -------------------------------------------
>                 Key: CURATOR-354
>                 URL:
>             Project: Apache Curator
>          Issue Type: Bug
>    Affects Versions: 2.11.0
>            Reporter: Evan Pollan
>            Assignee: Jordan Zimmerman
>         Attachments: RSS before and after fix.png
> Both compress and decompress instantiate GZIP streams, use them, and don't close them.
 The java util deflate/inflate streams use JNI to leverage zlib, including the allocation
of a native, off-heap buffer.  
> These JNI buffer handles are released when the containing stream is closed.  They're
also released by the finalize() method on, _but_ it looks
as if the native memory can pile up quickly enough in certain use cases where the JVM is OOM
killed before the finalizer does its thing.
> Fix is to explicitly close these streams after they're used.

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