Josh Elser created HDFS-5856:
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Summary: DataNode.checkDiskError might throw NPE
Key: HDFS-5856
URL: https://issues.apache.org/jira/browse/HDFS-5856
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Affects Versions: 2.2.0
Reporter: Josh Elser
Assignee: Josh Elser
Priority: Minor
Fix For: 3.0.0
Running a small 2.2.0 cluster with a heavy workload. I noticed in the DataNode
log that when faced with network exceptions, I would sometimes get a
NullPointerException from checkDiskError.
Looking at the code, if the Exception that is handed to checkDiskError contains
a null message, the checks that try to identify if the Exception is
network-related will throw a NPE.
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