NPE in IPC handler.
-------------------
Key: HADOOP-1949
URL: https://issues.apache.org/jira/browse/HADOOP-1949
Project: Hadoop
Issue Type: Bug
Components: ipc
Affects Versions: 0.14.1
Reporter: Raghu Angadi
Noticed a few of the following traces during upgrade of a large cluster to
0.14.1 :
{noformat}
2007-09-26 17:21:40,134 WARN org.apache.hadoop.ipc.Server: IPC Server handler
20 on 8020, call
processUpgradeCommand([EMAIL PROTECTED])
from 192.0.0.100:40500: output error
java.lang.NullPointerException
at
org.apache.hadoop.ipc.SocketChannelOutputStream.flushBuffer(SocketChannelOutputStream.java:108)
at
org.apache.hadoop.ipc.SocketChannelOutputStream.write(SocketChannelOutputStream.java:89)
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
at java.io.DataOutputStream.flush(DataOutputStream.java:106)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:585)
{noformat}
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