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Posted to issues@spark.apache.org by "DENG FEI (JIRA)" <ji...@apache.org> on 2018/08/08 12:33:00 UTC

[jira] [Created] (SPARK-25055) MessageWithHeader transfer ByteBuffer from Netty's CompositeByteBuf many times

DENG FEI created SPARK-25055:
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             Summary: 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


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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