Too many log messages generated if a node has a different Hadoop version
installed
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Key: MAPREDUCE-1468
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1468
Project: Hadoop Map/Reduce
Issue Type: Improvement
Affects Versions: 0.20.1
Reporter: Qi Liu
When upgrading or downgrading Hadoop, for a large cluster it is possible that
some nodes are not upgraded/downgraded. In this case, the jobtracker and
namenode generates gigabytes of logs each day, reporting protocol version
mismatch. Such log message is generated once every 3ms.
Ideally, the misbehaved node should quit retrying after several attempts if
there is a protocol version mismatch. At the very least, the log message should
be minimized (maybe once a day or once per start up).
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