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From "Andor Molnar (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ZOOKEEPER-3116) Make the DataTree.approximateDataSize more efficient
Date Tue, 04 Sep 2018 09:56:00 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-3116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andor Molnar resolved ZOOKEEPER-3116.
-------------------------------------
    Resolution: Fixed

Issue resolved by pull request 594
[https://github.com/apache/zookeeper/pull/594]

> Make the DataTree.approximateDataSize more efficient
> ----------------------------------------------------
>
>                 Key: ZOOKEEPER-3116
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3116
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: server
>            Reporter: Fangmin Lv
>            Assignee: Fangmin Lv
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.6.0
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> The approximateDataSize is a nice metric to show what's the total size stored in ZooKeeper
ensemble over time, but it's expensive to query too often, since each query will go through
all the nodes to calculate the total size.
> It's better to use a counter to record the total data size when txns applied to the
DataTree, which is cheaper.



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