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From "Benjamin Lerer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10007) Repeated rows in paged result
Date Tue, 25 Aug 2015 19:05:47 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14711794#comment-14711794
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Benjamin Lerer commented on CASSANDRA-10007:
--------------------------------------------

With alpha1, I can see one wrong number on the first run of the script. After the number are
always the good ones.
[~aholmber], [~steve.wang] can you do a test with the latest cassandra-3.0 and the latest
python driver.
I would like to be sure that the problem is really gone.

> Repeated rows in paged result
> -----------------------------
>
>                 Key: CASSANDRA-10007
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10007
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Adam Holmberg
>            Assignee: Benjamin Lerer
>              Labels: client-impacting
>             Fix For: 3.x
>
>         Attachments: paging-test.py
>
>
> We noticed an anomaly in paged results while testing against 3.0.0-alpha1. It seems that
unbounded selects can return rows repeated at page boundaries. Furthermore, the number of
repeated rows seems to dither in count across consecutive runs of the same query.
> Does not reproduce on 2.2.0 and earlier.
> I also noted that this behavior only manifests on multi-node clusters.
> The attached script shows this behavior when run against 3.0.0-alpha1.



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