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https://issues.apache.org/jira/browse/HBASE-21320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Duo Zhang updated HBASE-21320:
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Fix Version/s: 3.0.0-alpha-1
> [canary] Cleanup of usage and add commentary
> --------------------------------------------
>
> Key: HBASE-21320
> URL: https://issues.apache.org/jira/browse/HBASE-21320
> Project: HBase
> Issue Type: Bug
> Components: canary
> Reporter: Michael Stack
> Assignee: Michael Stack
> Priority: Major
> Fix For: 3.0.0-alpha-1, 2.2.0, 2.1.1, 2.0.3
>
> Attachments: HBASE-21320.branch-2.1.001.patch,
> HBASE-21320.branch-2.1.002.patch, HBASE-21320.branch-2.1.003.patch,
> HBASE-21320.branch-2.1.004.patch
>
>
> I was trying to us the Canary as a diagnosis tool figuring what was online
> and what was off but I couldn't make sense of how to use it. There was a bug
> where we default to regionserver 'mode' always and only way to change it was
> via a system property and a cryptic class name.
> Changed it so we don't specify output ahead of figuring what 'mode' we are to
> run in. Cleaned-up usage and added commentary. It seems useable now (Did not
> change command-line args though they need changing).
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