RPC client can response more efficiently when sendParam() got IOException
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Key: HADOOP-6768
URL: https://issues.apache.org/jira/browse/HADOOP-6768
Project: Hadoop Common
Issue Type: Improvement
Components: ipc
Affects Versions: 0.22.0
Reporter: Xiao Kang
Fix For: 0.22.0
Under current RPC client implementation, when Client.Connection.sendParam()
encounters IOException it just marks the exception and wait receiveResponse()
thread to handle the exception. However, receiveResponse() may block
ipc.ping.interval on socket read().
This means that RPC client may wait ipc.ping.interval(typically 1 miniute) when
exception in sendParam().
It maybe not so reasonable in some situation. For example using "hadoop fs -put
" a small file, DFSClient.close() will interupt renewLease() thread and it may
wait 1 minute.
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