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HBase, mail # user - HConnectionImplementation closed


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Re: HConnectionImplementation closed
Bing Jiang 2013-01-09, 00:25
check hbase conf exists in mr job environment .
On Jan 6, 2013 7:36 PM, <[EMAIL PROTECTED]> wrote:

> Hi there,
>
> I'm having problems accessing HBase from within a MapReduce programme on
> my cluster. To locate the problem I've written a very simple test
> programme. It runs fine on the master node, however on the other nodes I
> get the same error that was causing problems in the MapReduce programme:
>
> java.io.IOException: org.apache.hadoop.hbase.**client.HConnectionManager$*
> *HConnectionImplementation@**2937d090 closed
>     at org.apache.hadoop.hbase.**client.HConnectionManager$**
> HConnectionImplementation.**locateRegion(**HConnectionManager.java:794)
>     at org.apache.hadoop.hbase.**client.HConnectionManager$**
> HConnectionImplementation.**locateRegion(**HConnectionManager.java:782)
>     at org.apache.hadoop.hbase.**client.HTable.finishSetup(**
> HTable.java:251)
>     at org.apache.hadoop.hbase.**client.HTable.<init>(HTable.**java:215)
>     at org.apache.hadoop.hbase.**client.HTable.<init>(HTable.**java:173)
>     at TestHBase.main(TestHBase.java:**29)
>
> This occurs after these lines in the programme:
>
>         Configuration conf = HBaseConfiguration.create();
>         conf.set("hbase.master", args[0]);
>         HTable table = new HTable(conf, "Table1");
>
>
> Note: I'm note accessing HBase through the InputFormat. I simply would
> like to read out a few values in the setup-method of my mappers. hbase
> shell seems to be working on all nodes just fine and I can ping and telnet
> the master node on port 60000 from the other nodes.
>
> What could be the problem? Am i missing something? I've installed HBase
> with cloudera manager CDH4.
>
> Kind regards,
> Antony
>