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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9579) Add JMX / nodetool command to refresh system.size_estimates
Date Thu, 12 Nov 2015 18:12:11 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15002555#comment-15002555
] 

Aleksey Yeschenko commented on CASSANDRA-9579:
----------------------------------------------

Committed as [ecd66de2bdf2ecb88c4276a4616a76f5ec2921bb|https://github.com/apache/cassandra/commit/ecd66de2bdf2ecb88c4276a4616a76f5ec2921bb]
to 2.1, merged with 2.2, 3.0, 3.1, and trunk. Thank you. (messed up commit message a bit,
but whatevs).

> Add JMX / nodetool command to refresh system.size_estimates
> -----------------------------------------------------------
>
>                 Key: CASSANDRA-9579
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9579
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: CQL
>            Reporter: Piotr Kołaczkowski
>            Assignee: Carl Yeksigian
>            Priority: Minor
>             Fix For: 2.1.x, 2.2.x
>
>
> CASSANDRA-7688 added dumping size estimates at a fixed interval. However, in some cases,
e.g. after inserting huge amounts of data or truncating a table, size estimates may become
severely incorrect for the interval time. In this case being able to manually trigger the
recalculation of the estimates would be very useful. It would be also useful for any automated
testing requiring fresh size estimates.



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