[jira] [Commented] (CASSANDRA-11520) Implement optimized local read path for CL.ONE
[ https://issues.apache.org/jira/browse/CASSANDRA-11520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15365770#comment-15365770 ] Stefania commented on CASSANDRA-11520: -- This functionality will be delivered by CASSANDRA-11521, only for range queries at CL.ONE with no indexes applicable to the query. > Implement optimized local read path for CL.ONE > -- > > Key: CASSANDRA-11520 > URL: https://issues.apache.org/jira/browse/CASSANDRA-11520 > Project: Cassandra > Issue Type: Sub-task > Components: CQL, Local Write-Read Paths >Reporter: Stefania >Assignee: Stefania > Fix For: 3.x > > > -Add an option to the CQL SELECT statement to- Bypass the coordination layer > when reading locally at CL.ONE. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (CASSANDRA-11520) Implement optimized local read path for CL.ONE
[ https://issues.apache.org/jira/browse/CASSANDRA-11520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15231454#comment-15231454 ] Stefania commented on CASSANDRA-11520: -- That's a very good point. We should apply this optimization only when repair decision and speculative retry are set to NONE. We basically apply this optimization only when there is a single target replica selected, and it happens to be the local host. > Implement optimized local read path for CL.ONE > -- > > Key: CASSANDRA-11520 > URL: https://issues.apache.org/jira/browse/CASSANDRA-11520 > Project: Cassandra > Issue Type: Sub-task > Components: CQL, Local Write-Read Paths >Reporter: Stefania >Assignee: Stefania > Fix For: 3.x > > > -Add an option to the CQL SELECT statement to- Bypass the coordination layer > when reading locally at CL.ONE. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (CASSANDRA-11520) Implement optimized local read path for CL.ONE
[ https://issues.apache.org/jira/browse/CASSANDRA-11520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15230167#comment-15230167 ] Aleksey Yeschenko commented on CASSANDRA-11520: --- Beware read repair and speculative retry. > Implement optimized local read path for CL.ONE > -- > > Key: CASSANDRA-11520 > URL: https://issues.apache.org/jira/browse/CASSANDRA-11520 > Project: Cassandra > Issue Type: Sub-task > Components: CQL, Local Write-Read Paths >Reporter: Stefania >Assignee: Stefania > Fix For: 3.x > > > -Add an option to the CQL SELECT statement to- Bypass the coordination layer > when reading locally at CL.ONE. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (CASSANDRA-11520) Implement optimized local read path for CL.ONE
[ https://issues.apache.org/jira/browse/CASSANDRA-11520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15229886#comment-15229886 ] Stefania commented on CASSANDRA-11520: -- No need to change the syntax of SELECT, it should be fine to always apply the special case. I will amend the description. > Implement optimized local read path for CL.ONE > -- > > Key: CASSANDRA-11520 > URL: https://issues.apache.org/jira/browse/CASSANDRA-11520 > Project: Cassandra > Issue Type: Sub-task > Components: CQL, Local Write-Read Paths >Reporter: Stefania >Assignee: Stefania > Fix For: 3.x > > > Add an option to the CQL SELECT statement to bypass the coordination layer > when reading local data at CL.ONE. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (CASSANDRA-11520) Implement optimized local read path for CL.ONE
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https://issues.apache.org/jira/browse/CASSANDRA-11520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15229864#comment-15229864
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Sylvain Lebresne commented on CASSANDRA-11520:
--
To be clear, when you say "Add an option to the CQL SELECT statement", you're
just talking about having a special cased path when we detect the read is local
and CL is ONE right? You're not suggesting adding new syntax to {{SELECT}}, are
you?
> Implement optimized local read path for CL.ONE
> --
>
> Key: CASSANDRA-11520
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11520
> Project: Cassandra
> Issue Type: Sub-task
> Components: CQL, Local Write-Read Paths
>Reporter: Stefania
>Assignee: Stefania
> Fix For: 3.x
>
>
> Add an option to the CQL SELECT statement to bypass the coordination layer
> when reading local data at CL.ONE.
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