[jira] [Created] (FLINK-971) Configure Netty ByteBufAllocator instead of using the default configuration

[Shang Yuanchun (Jira)]

Ufuk Celebi created FLINK-971:
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             Summary: Configure Netty ByteBufAllocator instead of using the default configuration
                 Key: FLINK-971
                 URL: https://issues.apache.org/jira/browse/FLINK-971
             Project: Flink
          Issue Type: Improvement
          Components: Distributed Runtime
    Affects Versions: pre-apache-0.5.1
            Reporter: Ufuk Celebi
            Priority: Minor


{{NettyConnectionManager}} uses the {{PooledByteBufAllocator.DEFAULT}} allocator, which allocates unnecessary heap arenas, which are never used. Also, the page size is smaller than our buffer size (+ headers etc.), which results in page-boundery crossing allocations.



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