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From "S. Zhou" <myx...@yahoo.com>
Subject HBase mapreduce job: unable to find region for a table
Date Thu, 11 Jul 2013 17:58:28 GMT
I am running a very simple MR HBase job (reading from a tiny HBase table and outputs nothing).
I run it on a pseudo-distributed HBase cluster on my local machine which uses a pseudo-distributed
HDFS (on local machine again). When I run it, I get the following exception: Unable to find
region for test. But I am sure the table "test" exists.

13/07/11 10:27:35 INFO zookeeper.ClientCnxn: Session establishment complete on server localhost/,
sessionid = 0x13fcec598d70005, negotiated timeout = 90000
13/07/11 10:38:15 ERROR mapreduce.TableInputFormat: org.apache.hadoop.hbase.client.NoServerForRegionException:
Unable to find region for test,,99999999999999 after 10 tries.
    at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:980)
    at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:885)
    at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:987)
    at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:889)
    at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:846)
    at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:234)

Here is my HBase hbase-site.xml file:


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