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https://issues.apache.org/jira/browse/CASSANDRA-13040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Podkowinski updated CASSANDRA-13040:
-------------------------------------------
    Status: Patch Available  (was: Open)

> Estimated TS drop-time histogram updated with Cell.NO_DELETION_TIME
> -------------------------------------------------------------------
>
>                 Key: CASSANDRA-13040
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13040
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Stefan Podkowinski
>            Assignee: Stefan Podkowinski
>
> Starting with 3.0, {{MetadataCollector.updateLocalDeletionTime(int 
> newLocalDeletionTime)}} will be called with {{cell.localDeletionTime()}} in 
> order to update the min/max deletion times as well as the 
> {{estimatedTombstoneDropTime}} histogram. Currently this also happens for 
> {{Cell.NO_DELETION_TIME}} ({{Integer.MAX_VALUE}}), which causes the histogram 
> to be called for every regular cell.
> This can be easily verified by using {{sstablemetadata}} on any sstable. You 
> should be able to find a very high value for 2147483647 in the "Estimated 
> tombstone drop times" section.
> At this point, I don't think this is causing serious harm, but could be a 
> performance issue (see linked ticket). Calculated droppable TS times should 
> not be affected.



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