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Posted to commits@cassandra.apache.org by "Russ Hatch (JIRA)" <ji...@apache.org> on 2014/05/13 02:07:15 UTC
[jira] [Commented] (CASSANDRA-7120) Bad paging state returned for
prepared statements for last page
[ https://issues.apache.org/jira/browse/CASSANDRA-7120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13995839#comment-13995839 ]
Russ Hatch commented on CASSANDRA-7120:
---------------------------------------
If there's a way to repro this 100% of the time, I'd like to add it to the jython paging tests (https://github.com/riptano/cassandra-dtest-jython).
> Bad paging state returned for prepared statements for last page
> ---------------------------------------------------------------
>
> Key: CASSANDRA-7120
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7120
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Tyler Hobbs
> Fix For: 2.1 rc1
>
>
> When executing a paged query with a prepared statement, a non-null paging state is sometimes being returned for the final page, causing an endless paging loop.
> Specifically, this is the schema being used:
> {noformat}
> CREATE KEYSPACE test3rf WITH replication = {'class': 'SimpleStrategy', 'replication_factor': '3'}';
> USE test3rf;
> CREATE TABLE test3rf.test (
> k int PRIMARY KEY,
> v int
> )
> {noformat}
> The inserts are like so:
> {noformat}
> INSERT INTO test3rf.test (k, v) VALUES (?, 0)
> {noformat}
> With values from [0, 99] used for k.
> The query is {{SELECT * FROM test3rf.test}} with a fetch size of 3.
> The final page returns the row with k=3, and the paging state is {{0004000000420004000176007fffffa2}}. This matches the paging state from three pages earlier. When executing this with a non-prepared statement, no paging state is returned for this page.
> This problem doesn't happen with the 2.0 branch.
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