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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6731) Requests unnecessarily redirected with CL=ONE
Date Wed, 19 Feb 2014 15:48:20 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13905574#comment-13905574
] 

Jonathan Ellis commented on CASSANDRA-6731:
-------------------------------------------

bq. Of a sample set of 1000 queries, 10.7% of them contacted other nodes

That's suspiciously close to default 10% read repair chance.  Can you try after disabling
that?

> Requests unnecessarily redirected with CL=ONE
> ---------------------------------------------
>
>                 Key: CASSANDRA-6731
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6731
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Linux
>            Reporter: Aris Prassinos
>            Assignee: Ryan McGuire
>         Attachments: 6731.traces.txt, ticket_6731.py
>
>
> Three-node cluster with RF=3. All data currently in sync.
> Network topology strategy. Each node defined to be on a different rack.
> endpoint_snitch: PropertyFileSnitch
> dynamic_snitch_update_interval_in_ms: 100
> dynamic_snitch_reset_interval_in_ms: 600000
> dynamic_snitch_badness_threshold: 0
> All tables defined with read_repair_chance=0
> From cqlsh when querying with Consistency=ONE tracing shows that requests get frequently
redirected to other nodes even though the local node has the data.
> There is no other activity on the cluster besides my test queries.



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