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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8633) cassandra-stress writes don't respect 'select' parameter
Date Thu, 15 Jan 2015 21:03:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14279285#comment-14279285
] 

Aleksey Yeschenko commented on CASSANDRA-8633:
----------------------------------------------

W/ the attached partition4.yaml (1/100/10K) stress just consumes all the cores w/ generating
the batches, and getting nowhere.

> cassandra-stress writes don't respect 'select' parameter
> --------------------------------------------------------
>
>                 Key: CASSANDRA-8633
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8633
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Aleksey Yeschenko
>            Assignee: Benedict
>             Fix For: 2.1.3
>
>         Attachments: partition1.yaml, partition2.yaml, partition3.yaml, partition4.yaml
>
>
> W/ the attached profile (partition1.yaml), which has 3 clustering columns, each w/ clustering:
fixed(100), and select: fixed(1)/1M, stress generates huge batches (whereas should only generate
single-row mutations).
> {noformat}
> WARN  20:37:59 Batch of prepared statements for [extreme.extreme] is of size 269973,
exceeding specified threshold of 5120 by 264853.
> {noformat}
> It can be better or worth depending on the distribution of those clustering-s (w/ product
fixed at 1M).
> W/ 10/1000/100 (partition2.yaml):
> {noformat}
> WARN  20:47:22 Batch of prepared statements for [extreme.extreme] is of size 1769445,
exceeding specified threshold of 5120 by 1764325.
> {noformat}
> W/ 10k/100/1 (partition3.yaml):
> {noformat}
> WARN  20:50:19 Batch of prepared statements for [extreme.extreme] is of size 5373, exceeding
specified threshold of 5120 by 253.
> {noformat}



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