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From "Chinmay Kulkarni (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18762) Canary sink type cast error
Date Tue, 26 Sep 2017 20:12:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16181480#comment-16181480
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Chinmay Kulkarni commented on HBASE-18762:
------------------------------------------

Thanks [~apurtell].

> Canary sink type cast error
> ---------------------------
>
>                 Key: HBASE-18762
>                 URL: https://issues.apache.org/jira/browse/HBASE-18762
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Chinmay Kulkarni
>            Assignee: Chinmay Kulkarni
>             Fix For: 2.0.0, 3.0.0, 1.4.0, 1.5.0
>
>         Attachments: HBASE-18762.001.patch, HBASE-18830-addendum.patch
>
>
>  When running the main method of Canary.java, we see the following error:
> Exception in thread "main" java.lang.ClassCastException: org.apache.hadoop.hbase.tool.Canary$RegionServerStdOutSink
cannot be cast to org.apache.hadoop.hbase.tool.Canary$RegionStdOutSink
> 	at org.apache.hadoop.hbase.tool.Canary.newMonitor(Canary.java:911)
> 	at org.apache.hadoop.hbase.tool.Canary.run(Canary.java:796)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> 	at org.apache.hadoop.hbase.tool.Canary.main(Canary.java:1571)
> This happens because we typecast the sink depending on the mode (zookeeper mode/region
server mode) that Canary is configured in. In case no mode is specified, we typecast the sink
into _RegionStdOutSink_. In general, it is possible to provide inconsistent mode and sink
types while running Canary. 



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