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From "Sylvain Lebresne (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-4377) CQL3 column value validation bug
Date Thu, 28 Jun 2012 11:53:44 GMT


Sylvain Lebresne commented on CASSANDRA-4377:

bq. it was impossible to insert data into the column family except with cqlsh. Using a basic
thrift batch mutate failed on the validation step because it tried to validate the value

Alright, that part is not expected and is likely a bug.

Though I note that even if we fix that, since we don't expose on the thrift side everything
needed to interpret the value correctly, thrift client won't be able to work with those kind
of table very well. In particular they won't know how to interpret the value of a get. So
I guess we need to either say clearly that CQL3 table are not meant to be accessed from thrift,
or we should probably start exposing all the column metatada on the thrift side (but we need
to expose the componentIndex part of the metadata in particular and the discussion on CASSANDRA-4093
is relevant for that).
> CQL3 column value validation bug
> --------------------------------
>                 Key: CASSANDRA-4377
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.1
>            Reporter: Nick Bailey
>            Assignee: Sylvain Lebresne
>             Fix For: 1.1.2
> {noformat}
> cqlsh> create keyspace test with strategy_class = 'SimpleStrategy' and strategy_options:replication_factor
= 1;
> cqlsh> use test;
> cqlsh:test> CREATE TABLE stats (
>         ...   gid          blob,
>         ...   period     int,
>         ...   tid          blob, 
>         ...   sum        int,
>         ...   uniques           blob,
>         ...   PRIMARY KEY(gid, period, tid)
>         ... );
> 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=text 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}
> You can see in the above output that the stats cf is created with the column validator
set to text, but neither of the non primary key columns defined are text. It should either
be setting metadata for those columns or not setting a default validator or some combination
of the two.

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