Todd Lipcon created HDFS-3342:
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Summary: SocketTimeoutException in BlockSender.sendChunks could
have a better error message
Key: HDFS-3342
URL: https://issues.apache.org/jira/browse/HDFS-3342
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Affects Versions: 2.0.0
Reporter: Todd Lipcon
Priority: Minor
Currently, if a client connects to a DN and begins to read a block, but then
stops calling read() for a long period of time, the DN will log a
SocketTimeoutException "480000 millis timeout while waiting for channel to be
ready for write." This is because there is no "keepalive" functionality of any
kind. At a minimum, we should improve this error message to be an INFO level
log which just says that the client likely stopped reading, so disconnecting it.
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