Make DFSOutputStream MAX_PACKETS configurable
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Key: HDFS-962
URL: https://issues.apache.org/jira/browse/HDFS-962
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs client
Affects Versions: 0.22.0
Reporter: Todd Lipcon
Priority: Minor
HDFS-959 suggests that the MAX_PACKETS variable (which determines how many
outstanding data packets the DFSOutputStream will permit) may have an impact on
performance. If so, we should make it configurable to trade off between memory
and performance. I think it ought to be a secret/undocumented config for now -
this will make it easier to benchmark without confusing users.
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