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https://issues.apache.org/jira/browse/FLINK-7517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16313192#comment-16313192
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ASF GitHub Bot commented on FLINK-7517:
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Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/4594
> let NettyBufferPool extend PooledByteBufAllocator
> -------------------------------------------------
>
> Key: FLINK-7517
> URL: https://issues.apache.org/jira/browse/FLINK-7517
> Project: Flink
> Issue Type: Sub-task
> Components: Network
> Affects Versions: 1.4.0
> Reporter: Nico Kruber
> Assignee: Nico Kruber
>
> {{NettyBufferPool}} wraps {{PooledByteBufAllocator}} but due to this, any
> allocated buffer's {{alloc()}} method is returning the wrapped
> {{PooledByteBufAllocator}} which allowed heap buffers again. By extending the
> {{PooledByteBufAllocator}}, we prevent this loop hole and also fix the
> invariant that a copy of a buffer should have the same allocator.
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