SocketTimeoutException in unit tests
------------------------------------
Key: HADOOP-2971
URL: https://issues.apache.org/jira/browse/HADOOP-2971
Project: Hadoop Core
Issue Type: Bug
Components: io
Affects Versions: 0.17.0
Reporter: Raghu Angadi
Assignee: Raghu Angadi
TestJobStatusPersistency failed and contained DataNode stacktraces similar to
the following :
{noformat}
2008-03-07 21:27:00,410 ERROR dfs.DataNode (DataNode.java:run(976)) -
127.0.0.1:57790:DataXceiver: java.net.SocketTimeoutException: 0 millis
timeout while waiting for Unknown Addr (local: /127.0.0.1:57790) to be ready
for read
at
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:188)
at
org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:135)
at
org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:121)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
at java.io.DataInputStream.readInt(DataInputStream.java:370)
at
org.apache.hadoop.dfs.DataNode$BlockReceiver.receiveBlock(DataNode.java:2434)
at
org.apache.hadoop.dfs.DataNode$DataXceiver.writeBlock(DataNode.java:1170)
at org.apache.hadoop.dfs.DataNode$DataXceiver.run(DataNode.java:953)
at java.lang.Thread.run(Thread.java:619)
{noformat}
This is mostly related to HADOOP-2346. The error is strange.
socket.getRemoteSocketAddress() returned null implying this socket is not
connected yet. But we have already read a few bytes from it!.
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