[ http://issues.apache.org/jira/browse/HADOOP-487?page=all ]
Sameer Paranjpye updated HADOOP-487:
------------------------------------
Fix Version/s: 0.7.0
Affects Version/s: 0.6.2
(was: 0.5.0)
The NullPointerException is generated in the constructor of the Connection
class. The incorrect hostname is used to instantiate an InetSocketAddress which
fails to resolve. Accessing the 'address' field of this causes the
NullPointerException.
> misspelt DFS host name gives null pointer exception in getProtocolVersion
> -------------------------------------------------------------------------
>
> Key: HADOOP-487
> URL: http://issues.apache.org/jira/browse/HADOOP-487
> Project: Hadoop
> Issue Type: Improvement
> Components: dfs
> Affects Versions: 0.6.2
> Reporter: Dick King
> Assigned To: Sameer Paranjpye
> Fix For: 0.7.0
>
>
> I'm trying to construct a DistributedFileSystem but I have the wrong hostname.
> It doesn't work. It throws an exception. Fair enough.
> However, it throws a null pointer exception inside
> $Proxy0.getProtocolVersion, the code that checks whether we have the right
> protocol version, rather than giving us any exception we could understand or
> taking an exception in code to which we have sources so we have a way of
> understanding the problem.
> -dk
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