[jira] [Comment Edited] (CASSANDRA-8479) Timeout Exception on Node Failure in Remote Data Center

["Ryan McGuire (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-8479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14254060#comment-14254060 ] 

Ryan McGuire edited comment on CASSANDRA-8479 at 12/19/14 9:38 PM:
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I have not been able able to reproduce this.

I would suggest you reproduce this again and enable tracing: http://www.datastax.com/dev/blog/tracing-in-cassandra-1-2 . Perhaps the trace log will help illuminate what is going on here.

When I kill a node in the other datacenter the query trace looks identical and is the same speed as otherwise.

I'll mark this as Cannot Reproduce for now, but if you follow up with the trace log we can certainly reinvestigate this.


was (Author: enigmacurry):
I have not been able able to reproduce this.

I would suggest you reproduce this again and enable tracing: http://www.datastax.com/dev/blog/tracing-in-cassandra-1-2 . Perhaps the trace log will help illuminate what is going on here.

When I kill a node in the other datacenter the query trace looks identical and is the same speed as otherwise.

> Timeout Exception on Node Failure in Remote Data Center
> -------------------------------------------------------
>
>                 Key: CASSANDRA-8479
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8479
>             Project: Cassandra
>          Issue Type: Bug
>          Components: API, Core, Tools
>         Environment: Unix, Cassandra 2.0.11
>            Reporter: Amit Singh Chowdhery
>            Assignee: Ryan McGuire
>            Priority: Minor
>
> Issue Faced :
> We have a Geo-red setup with 2 Data centers having 3 nodes each. When we bring down a single Cassandra node down in DC2 by kill -9 <Cassandra-pid>, reads fail on DC1 with TimedOutException for a brief amount of time (15-20 sec~).
> Reference :
> Already a ticket has been opened/resolved and link is provided below :
> https://issues.apache.org/jira/browse/CASSANDRA-8352
> Activity Done as per Resolution Provided :
> Upgraded to Cassandra 2.0.11 .
> We have two 3 node clusters in two different DCs and if one or more of the nodes go down in one Data Center , ~5-10% traffic failure is observed on the other.
> CL: LOCAL_QUORUM
> RF=3



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