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From "T Jake Luciani (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7371) DELETEs get lost
Date Tue, 01 Jul 2014 13:01:26 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14048838#comment-14048838
] 

T Jake Luciani commented on CASSANDRA-7371:
-------------------------------------------

[~slebresne]  This test is specifically testing the netty protocol so makes no sense to remove
the netty path.

I think all cql tests should be using the netty protocol. Otherwise we aren't really testing
the common transport for cql.

> DELETEs get lost
> ----------------
>
>                 Key: CASSANDRA-7371
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7371
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: 2.1 git branch since merge commit 4722fe70aa9ae1b62772cfa1a1de58ef289445d5
("RefCount native frames from netty to avoid corruption bugs")
>            Reporter: Robert Stupp
>            Assignee: T Jake Luciani
>            Priority: Blocker
>              Labels: qa-resolved
>             Fix For: 2.1.0
>
>         Attachments: 7371.txt, Cassandra7371.java
>
>
> The mentioned commit introduced a bug which is not easy to reproduce:
> Workload description:
> - One INSERT into a table
> - multiple concurrent SELECTs against different tables (one select returns a result)
> - One UPDATE against the same table as the INSERT
> - (same) multiple concurrent SELECTs against different tables (one select returns a result)
> - One DELETE against the same table as the INSERT
> - (same) multiple concurrent SELECTs against different tables
> Expected is that the last bunch of SELECTs returns no result. But since commit SHA  the
DELETE gets not processed.
> To clarify - the DELETE is not delayed - it is not executed at all.
> Checked against a single node C* "cluster".
> Does only affect unreleased 2.1 - not 2.0 nor 1.2.



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