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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-4680) Show time drift between nodes
Date Thu, 07 Mar 2013 00:18:13 GMT


Jonathan Ellis updated CASSANDRA-4680:

    Fix Version/s:     (was: 1.2.3)
          Summary: Show time drift between nodes  (was: Show time drift between nodes when
using nodetool ring)

Is there actually a good way to do this without reinventing ntp?
> Show time drift between nodes
> -----------------------------
>                 Key: CASSANDRA-4680
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core, Tools
>            Reporter: Patrick McFadin
>            Priority: Minor
>             Fix For: 2.0
> From the docs:
> Server clock synchronization is more important in 1.2; replicas
> will use a coordinator-provided timestamp to determine when a
> request has timed out and is thus not worth proceeding with.
> Using a service like NTP is strongly recommended.
> Since this is now more important than ever, my proposed enhancement would be to the nodetool
command. When displaying the "ring" information, add the time drift as relative to the current
> This would be a valuable tool to aid in diagnostics.

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