[jira] [Updated] (HBASE-13996) Add write sniffing in canary

["Nick Dimiduk (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-13996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nick Dimiduk updated HBASE-13996:
---------------------------------
    Fix Version/s:     (was: 1.1.2)

This looks like a feature enhancement, not a bug fix. Hence dropping from 1.1.x line.

> Add write sniffing in canary
> ----------------------------
>
>                 Key: HBASE-13996
>                 URL: https://issues.apache.org/jira/browse/HBASE-13996
>             Project: HBase
>          Issue Type: New Feature
>          Components: canary
>    Affects Versions: 0.98.13, 1.1.0.1
>            Reporter: Liu Shaohui
>            Assignee: Liu Shaohui
>             Fix For: 2.0.0, 0.98.14
>
>         Attachments: HBASE-13996-v001.diff
>
>
> Currently the canary tool only sniff the read operations, it's hard to finding the problem in write path. 
> To support the write sniffing, we create a system table named '_canary_'  in the canary tool. And the tool will make sure that the region number is large than the number of the regionserver and the regions will be distributed onto all regionservers.
> Periodically, the tool will put data to these regions to calculate the write availability of HBase and send alerts if needed.



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