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From "Steve Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10007) Repeated rows in paged result
Date Wed, 19 Aug 2015 17:29:46 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14703413#comment-14703413
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Steve Wang commented on CASSANDRA-10007:
----------------------------------------

Hi Benjamin! Yes, I'm still able to reproduce this error. What I do is start a 3 node cluster
in CCM and then run the paging-test.py script that Adam attached in this ticket. The first
two values are as expected, but the next few values, which should be 100, oscillate between
104 and 103.

> 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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