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https://issues.apache.org/jira/browse/HBASE-17959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16018066#comment-16018066
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Andrew Purtell commented on HBASE-17959:
----------------------------------------

{code}
+              LOG.info("Read/Write operation for " + tableName + " took " + 
actual +
+                " ms. The configured timeout was " + configured + " ms.");
{code}

So the question I would ask when seeing this log line as an operator, is was it 
a read or write operation that timed out. 


> Canary timeout should be configurable on a per-table basis
> ----------------------------------------------------------
>
>                 Key: HBASE-17959
>                 URL: https://issues.apache.org/jira/browse/HBASE-17959
>             Project: HBase
>          Issue Type: Improvement
>          Components: canary
>            Reporter: Andrew Purtell
>            Assignee: Chinmay Kulkarni
>            Priority: Minor
>         Attachments: HBASE-17959.002.patch, HBASE-17959.patch
>
>
> The Canary read and write timeouts should be configurable on a per-table 
> basis, for cases where different tables have different latency SLAs. 



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