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https://issues.apache.org/jira/browse/HBASE-15217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15136661#comment-15136661
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Vishal Khandelwal commented on HBASE-15217:
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Verified this option. It works fine.
> Canary -regionserver fails with cast exception
> ----------------------------------------------
>
> Key: HBASE-15217
> URL: https://issues.apache.org/jira/browse/HBASE-15217
> Project: HBase
> Issue Type: Bug
> Components: canary
> Affects Versions: 0.98.16
> Reporter: Vishal Khandelwal
> Assignee: Ted Yu
> Priority: Critical
> Fix For: 0.98.18
>
> Attachments: HBASE-15217-0.98.v1.patch
>
>
> ./bin/hbase org.apache.hadoop.hbase.tool.Canary -regionserver
> Exception in thread "main" java.lang.ClassCastException:
> org.apache.hadoop.hbase.tool.Canary$StdOutSink cannot be cast to
> org.apache.hadoop.hbase.tool.Canary$ExtendedSink
> at org.apache.hadoop.hbase.tool.Canary.newMonitor(Canary.java:622)
> at org.apache.hadoop.hbase.tool.Canary.run(Canary.java:536)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at org.apache.hadoop.hbase.tool.Canary.main(Canary.java:1154)
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