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From "takeshi.miao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10108) NullPointerException thrown while use Canary with '-regionserver' option
Date Mon, 09 Dec 2013 06:17:07 GMT
takeshi.miao created HBASE-10108:
------------------------------------

             Summary: NullPointerException thrown while use Canary with '-regionserver' option
                 Key: HBASE-10108
                 URL: https://issues.apache.org/jira/browse/HBASE-10108
             Project: HBase
          Issue Type: Bug
          Components: monitoring
    Affects Versions: 0.99.0
            Reporter: takeshi.miao
            Priority: Minor


The NullPointerException will be thrown while using following command
{code}
HADOOP_CLASSPATH="`bin/hbase classpath`" hadoop org.apache.hadoop.hbase.tool.Canary -regionserver
{code}
The error msg as follows
{code}
...
13/12/09 05:17:02 INFO zookeeper.ClientCnxn: Session establishment complete on server scottm-hbase-1.lab/10.1.145.175:2181,
sessionid = 0x142d5c52b030015, negotiated timeout = 90000
Exception in thread "Thread-1" java.lang.NullPointerException
        at org.apache.hadoop.hbase.tool.Canary$RegionServerMonitor.checkNoTableNames(Canary.java:564)
        at org.apache.hadoop.hbase.tool.Canary$RegionServerMonitor.run(Canary.java:545)
        at java.lang.Thread.run(Thread.java:662)
{code}



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