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From "DENG FEI (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-25055) MessageWithHeader transfer ByteBuffer from Netty's CompositeByteBuf many times
Date Thu, 09 Aug 2018 06:57:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-25055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

DENG FEI resolved SPARK-25055.
------------------------------
    Resolution: Duplicate

> MessageWithHeader transfer ByteBuffer from Netty's CompositeByteBuf many times
> ------------------------------------------------------------------------------
>
>                 Key: SPARK-25055
>                 URL: https://issues.apache.org/jira/browse/SPARK-25055
>             Project: Spark
>          Issue Type: Bug
>          Components: Block Manager
>    Affects Versions: 2.3.1
>            Reporter: DENG FEI
>            Priority: Major
>
> MessageWithHeader transfer header and body if they are ByteBuf, in the case of  fetch
remote big block with greater than 'NIO_BUFFER_LIMIT', because of ChunkedByteBuffer#toNetty
avoid consolidate, CompositeByteBuf.nioByteBuf will allocate from heap every times,  lead
to fetch timeout.



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