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https://issues.apache.org/jira/browse/CASSANDRA-4454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13419641#comment-13419641
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Michaël Figuière commented on CASSANDRA-4454:
---------------------------------------------
Indeed the way it's currently mentioned is enough for experienced users. On the
other hand newcomers might not even be familiar with the fact we're in the
middle of a CQL grammar switch, then they run cqlsh with default settings, copy
paste an example of CQL3 DDL with a composite column from a web page and end up
with something like this:
{noformat}
cqlsh:mykeyspace> CREATE TABLE timeline (
... user_id varchar,
... tweet_id uuid,
... author varchar,
... body varchar,
... PRIMARY KEY (user_id, tweet_id));
Bad Request: line 6:40 mismatched input ')' expecting EOF
{noformat}
This is an example of confusing error you can have pushing CQL3 commands. The
fact that several guys had difficulties with this situation tends to show that
a message like "{{Consider using -3 switch to enable CQL3}} would be useful,
either at startup or when a CQL2/3 grammar mismatch occur. As the former is
trivial to implement, I was suggesting it.
> Add a notice on cqlsh startup about CQL2/3 switches
> ---------------------------------------------------
>
> Key: CASSANDRA-4454
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4454
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Affects Versions: 1.1.0
> Reporter: Michaël Figuière
> Assignee: paul cannon
> Priority: Minor
> Labels: cqlsh
> Fix For: 1.1.3
>
>
> Several developers I've talked with seem not to have noticed the {{-3}}
> switch immediately to run in CQL3 mode. If missing, cqlsh can obviously
> appear buggy in its way to handle CQL3.
> I guess it would be worth to add a notice at startup about this important
> detail.
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