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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Help with HBaseTestingUtility / MiniDFSCluster
Date Sat, 13 Jul 2013 04:30:11 GMT
I installed lein on Mac and Linux.

I tried 'lein test' on both platforms and the test passed on both:

lein test hbase.table-test
Starting DataNode 0 with dfs.data.dir:
/homes/hortonzy/mobius/target/test-data/246828b9-1be9-4949-9bbc-b215b378fb67/dfscluster_9ed0bd88-d309-4fed-9823-3bbf86973ae4/dfs/data/data1,/homes/hortonzy/mobius/target/test-data/246828b9-1be9-4949-9bbc-b215b378fb67/dfscluster_9ed0bd88-d309-4fed-9823-3bbf86973ae4/dfs/data/data2
Cluster is active

Ran 11 tests containing 14 assertions.
0 failures, 0 errors.

Here is Linux OS:

Linux a.net 2.6.32-220.23.1.el6.YAHOO.20120713.x86_64 #1 SMP Fri Jul 13
11:40:51 CDT 2012 x86_64 x86_64 x86_64 GNU/Linux

Looking at MiniDFSCluster.java, line 426:

      String ipAddr = dn.getSelfAddr().getAddress().getHostAddress();

It seems dn.getSelfAddr().getAddress() returned null.

According to:
http://docs.oracle.com/javase/7/docs/api/java/net/InetSocketAddress.html#getAddress()

This would mean address resolution problem.

Can you check ?

Cheers

On Fri, Jul 12, 2013 at 7:37 PM, David Williams
<mobiusinversion@gmail.com>wrote:

> Hi all,
>
> I am having an issue starting the a mini cluster for the
> HBaseTestingUtility.  In short I can on Mac OSX, but cannot on Linux.   But
> the error is cryptic and I don't know what to do next.
>
> I submitted a ticket with full details on StackOverflow,
>
>
> http://stackoverflow.com/questions/17625938/hbase-minidfscluster-java-fails-in-certain-environments
>
> But when I call .startMiniCluster  on an instance of HBaseTestingUtility ,
> on Linux (CentOS x86_64), I receive this error:
>
>
>
> ERROR in (create-table) (MiniDFSCluster.java:426)
> Uncaught exception, not in assertion.
> expected: nil
>   actual: java.lang.NullPointerException: null
>  at org.apache.hadoop.hdfs.MiniDFSCluster.startDataNodes
> (MiniDFSCluster.java:426)
>     org.apache.hadoop.hdfs.MiniDFSCluster.<init> (MiniDFSCluster.java:284)
>     org.apache.hadoop.hbase.HBaseTestingUtility.startMiniDFSCluster
> (HBaseTestingUtility.java:444)
>     org.apache.hadoop.hbase.HBaseTestingUtility.startMiniCluster
> (HBaseTestingUtility.java:612)
>     org.apache.hadoop.hbase.HBaseTestingUtility.startMiniCluster
> (HBaseTestingUtility.java:568)
>     org.apache.hadoop.hbase.HBaseTestingUtility.startMiniCluster
> (HBaseTestingUtility.java:555)
>
> I would appreciate help in finding out whats going on and how to set up my
> ENV to use the HBaseTestingUtility.
>
> Thanks
> David
>

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