[jira] [Commented] (FLINK-18695) Allow NettyBufferPool to allocate heap buffers

["Yun Gao (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-18695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17174031#comment-17174031 ] 

Yun Gao commented on FLINK-18695:
---------------------------------

Sorry for the long delay for being in vacation, and I will start working on this issue from today.

> Allow NettyBufferPool to allocate heap buffers
> ----------------------------------------------
>
>                 Key: FLINK-18695
>                 URL: https://issues.apache.org/jira/browse/FLINK-18695
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Network
>            Reporter: Chesnay Schepler
>            Assignee: Yun Gao
>            Priority: Major
>             Fix For: 1.12.0
>
>
> in 4.1.43 netty made a change to their SslHandler to always use heap buffers for JDK SSLEngine implementations, to avoid an additional memory copy.
> However, our {{NettyBufferPool}} forbids heap buffer allocations.
> We will either have to allow heap buffer allocations, or create a custom SslHandler implementation that does not use heap buffers (although this seems ill-adviced?).
> /cc [~sewen] [~uce] [~NicoK] [~zjwang] [~pnowojski]



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