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https://issues.apache.org/jira/browse/CASSANDRA-4656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Zotov updated CASSANDRA-4656:
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Attachment: Empty_values_in_histograms_v12.patch
> StorageProxy histograms
> -----------------------
>
> Key: CASSANDRA-4656
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4656
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.1.4
> Reporter: Alexey Zotov
> Priority: Minor
> Attachments: Empty_values_in_histograms_v12.patch,
> StorageProxy_histograms.patch
>
>
> I suggest to do two improvements:
> 1. StorageProxy histograms need to be added to the cli. In my opinion that
> statistic is very important, because it shows real server response time (with
> accounting of additional requests to other nodes). It can be usefull for
> gathering of the server response time statistics by some monitoring systems
> (without using additional JMX modules).
> 2. Output of 'nodetool cfhistograms' command has an empty values in
> 'SSTables' column. Output is not usable for parse because of that. I suggest
> to insert '0' instead of empty values.
> Old output:
> {code}
> Offset SSTables Write Latency Read Latency Row Size
> Column Count
> 1 109298 0 0 0
> 128700943
> 2 778 0 0 0
> 0
> ....
> 1597 0 505 0
> 0
> 1916 0 566 0
> 0
> {code}
> New output:
> {code}
> Offset SSTables Write Latency Read Latency Row Size
> Column Count
> 1 109298 0 0 0
> 128700943
> 2 778 0 0 0
> 0
> ....
> 1597 0 0 505 0
> 0
> 1916 0 0 566 0
> 0
> {code}
> PS: I've attached a patch that fixes all described problems.
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