DFSInputStream 'pread' does not close its sockets
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Key: HADOOP-3067
URL: https://issues.apache.org/jira/browse/HADOOP-3067
Project: Hadoop Core
Issue Type: Bug
Components: dfs
Reporter: Raghu Angadi
Assignee: Raghu Angadi
Fix For: 0.17.0
{{DFSInputStream.read(int, buffer)}} does not close the sockets it opens. Main
reason this problem did not show up till now is that pread interface is not
used much.
TestCrcCorruption failure first reported in HADOOP-2902 is caused by this bug.
Hadoop 0.17 uses more file descriptors for each thread waiting on socket io.
Since client does not close sockets, it leaves a lot of DataNode threads
waiting in the unit test.
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