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https://issues.apache.org/jira/browse/CASSANDRA-4377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13432011#comment-13432011
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Sylvain Lebresne commented on CASSANDRA-4377:
---------------------------------------------
But what the componentIndex give us is which of the composite component is the
cql3 column name. Typically, with collections, it's not even necessarily the
last of the component. Now, if you know the table is a CQL3 one, you could try
to infer which component it is by saying that it's the last component, except
if the last is a collection type, in which case that's the previous one, but
that feels a bit messy. And besides, thrift client libraries don't have a
simple automatic way to know if the table is a CQL3 one in the first place. I
guess you could say that if you have a composite comparator *and* some
column_metadata then you are likely a CQL3 table, but again, not very clean imo.
At least internally I would be in favor of keeping the componentIndex as it is
cleaner. I guess we could start returning the ColumnDefinition from CQL3 table
without the componentIndex and let thrift client infer what they can. As said,
I still think using CQL3 table from thrift has other way to be confusing, but
why not.
> CQL3 column value validation bug
> --------------------------------
>
> Key: CASSANDRA-4377
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4377
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.1.1
> Reporter: Nick Bailey
> Assignee: Sylvain Lebresne
> Fix For: 1.1.4
>
> Attachments: 4377.txt
>
>
> {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)'
> AND
> 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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