Chris Nauroth created HDFS-9572:
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Summary: Prevent DataNode log spam if a client connects on the
data transfer port but sends no data.
Key: HDFS-9572
URL: https://issues.apache.org/jira/browse/HDFS-9572
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Reporter: Chris Nauroth
Assignee: Chris Nauroth
Monitoring tools may choose to check liveness of the DataNode's data transfer
port by connecting to it. The monitoring tool will close the connection
immediately after establishment without sending any data. When this happens,
the DataNode encounters an unexpected EOF and logs a full stack trace. This
creates unneeded noise in the logs.
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