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From "Vijay (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4812) Require enabling cross-node timeouts
Date Wed, 17 Oct 2012 05:56:03 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vijay updated CASSANDRA-4812:
-----------------------------

    Attachment: 0001-CASSANDRA-4812.patch

Attached patch uses the header bit to signal the other end to use the timestamp.

For a user, 
Step 1: install ntp and make sure all the nodes times are in sync
Step 2: restart the nodes one by one to enable the timeout propagation.
                
> Require enabling cross-node timeouts
> ------------------------------------
>
>                 Key: CASSANDRA-4812
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4812
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.2.0 beta 1
>            Reporter: Jonathan Ellis
>            Assignee: Vijay
>            Priority: Minor
>             Fix For: 1.2.0 beta 2
>
>         Attachments: 0001-CASSANDRA-4812.patch
>
>
> Deploying 1.2 against a cluster whose clocks are not synchronized will cause *every*
request to timeout.  Suggest adding a {{cross_node_timeout}} option defaulting to false that
users must explicitly enable after installing ntpd.  Otherwise we fall back to the pessimistic
case of assuming the request was forwarded to the replica instantly by the coordinator.

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