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From "Yuki Morishita (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-11587) Cfstats estimate number of keys should return 0 for empty table
Date Tue, 31 May 2016 22:09:12 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-11587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yuki Morishita updated CASSANDRA-11587:
---------------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: 3.6)
                       (was: 3.0.x)
                       (was: 2.2.x)
                   3.0.7
                   3.7
                   2.2.7
           Status: Resolved  (was: Patch Available)

Thanks Mahdi,

The patch and tests looks good to me, committed as {{39b86e3792721cfc8aeef639cfd4ac06c56288e8}}.

||branch||dtest||
|[11587-2.2|https://github.com/yukim/cassandra/tree/11587-2.2]|[dtest|http://cassci.datastax.com/view/Dev/view/yukim/job/yukim-11587-2.2-dtest/lastCompletedBuild/testReport/]|
|[11587-3.0|https://github.com/yukim/cassandra/tree/11587-3.0]|[dtest|http://cassci.datastax.com/view/Dev/view/yukim/job/yukim-11587-3.0-dtest/lastCompletedBuild/testReport/]|
|[11587-3.7|https://github.com/yukim/cassandra/tree/11587-3.7]|[dtest|http://cassci.datastax.com/view/Dev/view/yukim/job/yukim-11587-3.7-dtest/lastCompletedBuild/testReport/]|

> Cfstats estimate number of keys should return 0 for empty table
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-11587
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11587
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tools
>         Environment: Cassandra 2.1.13
> Nodeltool
>            Reporter: Jane Deng
>            Assignee: Mahdi Mohammadi
>            Priority: Trivial
>              Labels: lhf
>             Fix For: 2.2.7, 3.7, 3.0.7
>
>
> If sstable count is 0, the "estimate number of keys" in cfstats shows -1. 
> {noformat}
> SSTable count: 0
> Number of keys (estimate): -1
> {noformat}
> The initial value of keyCount in SSTableReader is -1. When there is no sstable, nor entry
in memtable, the keyCount isn't increased. Cfstats should have some boundary check and return
0 for this case. 



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