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https://issues.apache.org/jira/browse/CASSANDRA-12506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429613#comment-15429613
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Arunkumar M commented on CASSANDRA-12506:
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Compactionhistory is already showing the timestamp in human readable format 
(compacted_at).

>bin/nodetool compactionhistory
Compaction History:
id                                          keyspace_name   columnfamily_name   
compacted_at      bytes_in bytes_out rows_merged
9a9240a0-6766-11e6-ab55-1b95258e9e06 system        local             
2016-08-20T23:15:05.898 535      293       {4:1}      
99c02390-6766-11e6-ab55-1b95258e9e06 system        local             
2016-08-20T23:15:04.521 506      401       {5:1}    

Could you please explain further?


> nodetool compactionhistory in it's output should have timestamp in human 
> readable format
> ----------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-12506
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12506
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Compaction
>         Environment: AWS
>            Reporter: Kenneth Failbus
>            Priority: Minor
>
> While running nodetool compactionhistory the output shows id and other 
> columns. I wanted to also see the timestamp for each id that got executed in 
> human readable format
> So, e.g. in the output if column id can be preceded by human readable 
> timestamp format, it will help in understanding when a particular compaction 
> ran and it's impact on the system resources.



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