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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5770) Add a clock skew warning threshold
Date Thu, 12 Apr 2012 18:41:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252710#comment-13252710

Hudson commented on HBASE-5770:

Integrated in HBase-TRUNK #2746 (See [https://builds.apache.org/job/HBase-TRUNK/2746/])
    HBASE-5770 Add a clock skew warning threshold (Revision 1325389)

     Result = SUCCESS
stack : 
Files : 
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
* /hbase/trunk/src/test/java/org/apache/hadoop/hbase/master/TestClockSkewDetection.java

> Add a clock skew warning threshold
> ----------------------------------
>                 Key: HBASE-5770
>                 URL: https://issues.apache.org/jira/browse/HBASE-5770
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver
>            Reporter: Ian Varley
>            Assignee: Ian Varley
>            Priority: Minor
>             Fix For: 0.94.0
>         Attachments: HBASE_5770_v1.patch
>   Original Estimate: 1h
>  Remaining Estimate: 1h
> There's currently an exception thrown by the master when a region server attempts to
start up with clock skew greater than some configured amount (defaulting to 30 seconds). However,
it'd be nice to get some warnings logged at a value that isn't severe enough to warrant killing
the RS, but still represents significant skew that could affect correctness. Will attach a
simple patch to add this as a setting.

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