Yongjun Zhang created HDFS-5939:
-----------------------------------
Summary: WebHdfs returns misleading error code and logs nothing if
trying to create a file with no DNs in cluster
Key: HDFS-5939
URL: https://issues.apache.org/jira/browse/HDFS-5939
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs-client
Affects Versions: 2.3.0
Reporter: Yongjun Zhang
When trying to access hdfs via webhdfs, and when datanode is dead, user will
see an exception below without any clue that it's caused by dead datanode:
$ curl -i -X PUT
".../webhdfs/v1/t1?op=CREATE&user.name=<userName>&overwrite=false"
...
{"RemoteException":{"exception":"IllegalArgumentException","javaClassName":"java.lang.IllegalArgumentException","message":"n
must be positive"}}
Need to fix the report to give user hint about dead datanode.
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