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https://issues.apache.org/jira/browse/RATIS-2189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17900132#comment-17900132
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Tsz-wo Sze commented on RATIS-2189:
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bq ... The USED_DIRECT_MEM issue only happens when using Streaming. ...
[~ivanandika], Thanks for checking. As you probably already known, there was
a memory leak; see RATIS-2197. Could you testing it with RATIS-2197?
bq. ... ratis streaming can support backpressure feature, ...
[~Symious], That's a great idea! We should support it.
> Use ByteBufAllocator#ioBuffer in NettyDataStreamUtils
> -----------------------------------------------------
>
> Key: RATIS-2189
> URL: https://issues.apache.org/jira/browse/RATIS-2189
> Project: Ratis
> Issue Type: Improvement
> Components: Streaming
> Reporter: Ivan Andika
> Assignee: Ivan Andika
> Priority: Minor
> Fix For: 3.2.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Currently, NettyDataStreamUtils uses ByteBufAllocator#directBuffer which
> forces all ByteBufAllocator to allocate direct buffer even for
> PreferHeapByteBufAllocator (e.g. when we set
> -Dorg.apache.ratis.thirdparty.io.netty.noPreferDirect=true).
> It's better to use ioBuffer and delegates to the actual ByteBufAllocator to
> the type of memory it will use.
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