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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 Fri, 27 May 2016 21:40:13 GMT

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

Yuki Morishita updated CASSANDRA-11587:
---------------------------------------
    Reviewer: Yuki Morishita

> 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: 3.6, 2.2.x, 3.0.x
>
>
> 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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