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From "paul cannon (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-4380) CQLSH: describe command doesn't output valid CQL command.
Date Mon, 10 Sep 2012 18:36:07 GMT


paul cannon commented on CASSANDRA-4380:

bq. for 1.2, provided you use the system.schema_columnfamilies table, it should (almost) always
be possible to create a valid CQL3 definition from an existing CF

Could you elaborate on how that should be done? Say I made the following in CQL2:

CREATE TABLE foo (t text PRIMARY KEY, f float, x uuid) WITH default_validation=timestamp;

If that can be recreated in CQL 3, then I've missed a development somewhere.

bq. The Cassandra already does that (so that you can always access thrift CF from CQL3), see It could be worth using the same made-up names here.

That's good to know. We should probably make that new ticket then.
> CQLSH: describe command doesn't output valid CQL command.
> ---------------------------------------------------------
>                 Key: CASSANDRA-4380
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Nick Bailey
>            Assignee: paul cannon
>              Labels: cqlsh
>             Fix For: 1.1.3
> {noformat}
> cqlsh:test> describe columnfamily stats;
> CREATE TABLE stats (
>   gid blob PRIMARY KEY
> ) WITH
>   comment='' AND
>   comparator='CompositeType(org.apache.cassandra.db.marshal.Int32Type,org.apache.cassandra.db.marshal.BytesType,org.apache.cassandra.db.marshal.UTF8Type)'
>   read_repair_chance=0.100000 AND
>   gc_grace_seconds=864000 AND
>   default_validation=blob AND
>   min_compaction_threshold=4 AND
>   max_compaction_threshold=32 AND
>   replicate_on_write='true' AND
>   compaction_strategy_class='SizeTieredCompactionStrategy' AND
>   compression_parameters:sstable_compression='SnappyCompressor';
> {noformat}
> I can create a cf in cql3 and then use describe cf to get the above output. However trying
to run that create statement says that all of the following are invalid options:
> * default_validation
> * min_compaction_threshold
> * max_compaction_threshold
> * comparator

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