zhangshilong created HDFS-7608:
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Summary: hdfs dfsclient newConnectedPeer has no read or write
timeout
Key: HDFS-7608
URL: https://issues.apache.org/jira/browse/HDFS-7608
Project: Hadoop HDFS
Issue Type: Bug
Components: dfsclient, fuse-dfs
Affects Versions: 2.6.0, 2.3.0
Environment: hdfs 2.3.0 hbase 0.98.6
Reporter: zhangshilong
Fix For: 2.6.0
problem:
hbase compactSplitThread may lock forever on read datanode blocks.
debug found: epollwait timeout set to 0,so epollwait can not run out.
cause: in hdfs 2.3.0
hbase using DFSClient to read and write blocks.
DFSClient creates one socket using newConnectedPeer(addr), but has no read or
write timeout.
in v 2.6.0, newConnectedPeer has add readTimeout to deal with the problem,but
do not add writeTimeout. why did not adding writeTimeout?
I think NioInetPeer need a default socket timeout,so appalications will no need
to force adding timeout by themselives.
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