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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15066) Small improvements to Canary tool
Date Wed, 10 Feb 2016 07:30:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15140451#comment-15140451
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Andrew Purtell commented on HBASE-15066:
----------------------------------------

This was marked as in 0.98.17 but I couldn't find it in 0.98 branch history. I suspect I had
it queued up to go on a working branch but never pushed it up. Have done so now. Fix version
is now 0.98.18.

> Small improvements to Canary tool
> ---------------------------------
>
>                 Key: HBASE-15066
>                 URL: https://issues.apache.org/jira/browse/HBASE-15066
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 2.0.0, 1.3.0, 0.98.18
>
>         Attachments: hbase-15066_v1.patch
>
>
> From an internal request from a user: 
> {quote}
> HBase comes with a canary tool which is very useful, but a few minor changes would make
it substantially better. Specifically, you don't know what it's testing until it completes
the test, so if it hangs, you can't tell where it's hanging. For example, if I run it with
the -regionserver option, it sends get requests to each of the regionservers in some random
order...
> And the same goes for the non-default mode, which hits each region for each table. 
> If it would just print a message prior to each 'get', it would be extremely helpful.
> {quote}
> This patch: 
>   - Adds debug statements for pre-operation steps. 
>   - Adds bin/hbase canary support 
>   - Fixes table names with patterns where the pattern was not matched previously. 



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