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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4925) Failure Detector should log or ignore sudden time change to the past
Date Thu, 17 Oct 2013 22:11:45 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13798513#comment-13798513
] 

Jonathan Ellis commented on CASSANDRA-4925:
-------------------------------------------

Hmm, I get

patch: **** malformed patch at line 164: diff --git a/test/unit/org/apache/cassandra/utils/BoundedStatsDequeTest.java
b/test/unit/org/apache/cassandra/utils/BoundedStatsDequeTest.java


> Failure Detector should log or ignore sudden time change to the past
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-4925
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4925
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: sankalp kohli
>            Assignee: sankalp kohli
>            Priority: Minor
>             Fix For: 2.0.2
>
>         Attachments: trunk-4925.patch, trunk-4925-v1.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> If a machine goes back in time all of a sudden because of a problem, Gossip will insert
a negative interArrivalTime. 
> This will decrease the mean value and can cause this machine to mark other nodes as down
and then mark them up as time passed. 
> But we should log such occurrences.



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