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https://issues.apache.org/jira/browse/CASSANDRA-11587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15299303#comment-15299303
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Mahdi Mohammadi commented on CASSANDRA-11587:
---------------------------------------------
My changes are applied against `trunk`. The issue indicates 2.1.13 as affected
version, but there is no such branch. Should I apply my changes against
'2.1.13' tag?
> 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
>
> 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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