Pipeline ACKs are sent as lots of tiny TCP packets
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Key: HDFS-1601
URL: https://issues.apache.org/jira/browse/HDFS-1601
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Affects Versions: 0.22.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Fix For: 0.22.0
I noticed in an hbase benchmark that the packet counts in my network monitoring
seemed high, so took a short pcap trace and found that each pipeline ACK was
being sent as five packets, the first four of which only contain one byte. We
should buffer these bytes and send the PipelineAck as one TCP packet.
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