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https://issues.apache.org/jira/browse/CASSANDRA-7371?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Stupp updated CASSANDRA-7371:
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Description:
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.
was:
The mentioned commit (merged to 2.1 from 1.2 via 2.0) 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.
> 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: Aleksey Yeschenko
> Priority: Blocker
> Fix For: 2.1.0
>
> Attachments: 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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