[ 
https://issues.apache.org/jira/browse/CASSANDRA-16944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17414213#comment-17414213
 ] 

Benjamin Lerer commented on CASSANDRA-16944:
--------------------------------------------

[~maedhroz] Would you have some time to review those patches?

> Single partition reads can read more SSTables than required 
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-16944
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16944
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Legacy/Local Write-Read Paths
>            Reporter: Benjamin Lerer
>            Assignee: Benjamin Lerer
>            Priority: Normal
>             Fix For: 3.0.x, 3.11.x, 4.0.x
>
>
> For some scenarios involving row deletions, range deletions or static 
> columns, the logic of 
> {{SinglePartitionReadCommand.queryMemtableAndSSTablesInTimestampOrder}} might 
> trigger more SSTables reads that expected. 
> For row deletions and range deletions the reasons is that the logic do not 
> take them into account. Once we hit a deleted row (caused by a row deletion 
> or a range deletion) with a timestamp higher than the one of the next SStable 
> we know that we can stop reading more SSTables.
> For static columns the problems seems to have been introduced by the changes 
> in CASSANDRA-16671.      



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]

Reply via email to