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From "takeshi.miao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10108) NullPointerException thrown while use Canary with '-regionserver' option
Date Mon, 09 Dec 2013 08:13:09 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13842965#comment-13842965
] 

takeshi.miao commented on HBASE-10108:
--------------------------------------

bq.-1 findbugs. The patch appears to introduce 2 new Findbugs (version 1.3.9) warnings
not for this patch

> 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
>             Fix For: 0.99.0
>
>         Attachments: HBASE-10108-trunk-01.patch
>
>
> 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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