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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-8633) cassandra-stress writes don't respect 'select' parameter
Date Thu, 15 Jan 2015 20:51:34 GMT
Aleksey Yeschenko created CASSANDRA-8633:
--------------------------------------------

             Summary: 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


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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