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From "Jim Witschey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6237) Allow range deletions in CQL
Date Wed, 25 Mar 2015 01:09:54 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14379081#comment-14379081
] 

Jim Witschey commented on CASSANDRA-6237:
-----------------------------------------

How are range deletions expected to interact with batches? I have a dtest [here|https://github.com/riptano/cassandra-dtest/blob/0d50f835c26bfcb71164a64fb1b80f4c3022e0b9/range_deletion_test.py#L63]
with a batch that succeeds:

{code}
BEGIN BATCH
DELETE FROM test WHERE partition_key = 1
DELETE FROM test WHERE partition_key = 2 AND i IN (0, 4)
APPLY BATCH;
{code}

and another [here|https://github.com/riptano/cassandra-dtest/blob/0d50f835c26bfcb71164a64fb1b80f4c3022e0b9/range_deletion_test.py#L95]
with a batch that errors out:

{code}
BEGIN BATCH
DELETE FROM test WHERE partition_key = 2 AND i >= 3
APPLY BATCH;
{code}

The error on the dtest side is

{code}
ServerError: <ErrorMessage code=0000 [Server error] message="java.lang.UnsupportedOperationException">
{code}

> Allow range deletions in CQL
> ----------------------------
>
>                 Key: CASSANDRA-6237
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6237
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Sylvain Lebresne
>            Assignee: Benjamin Lerer
>            Priority: Minor
>              Labels: cql, docs
>             Fix For: 3.0
>
>         Attachments: CASSANDRA-6237.txt
>
>
> We uses RangeTombstones internally in a number of places, but we could expose more directly
too. Typically, given a table like:
> {noformat}
> CREATE TABLE events (
>     id text,
>     created_at timestamp,
>     content text,
>     PRIMARY KEY (id, created_at)
> )
> {noformat}
> we could allow queries like:
> {noformat}
> DELETE FROM events WHERE id='someEvent' AND created_at < 'Jan 3, 2013';
> {noformat}



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