update static column using partition key

[tommaso barbugli]

Hi,
I am trying to use a couple of static columns; I am using cassandra 2.0.7
and when I try to set a value using the partition key only, I get a primary
key incomplete error.

Here is the schema and the query with the error I get from cqlsh

CREATE TABLE shard75 (
  group_id ascii,
  event_id timeuuid,
  group ascii,
  unread_ids set<timeuuid>,
  unseen_ids set<timeuuid>,
  PRIMARY KEY (group_id, event_id)
) WITH CLUSTERING ORDER BY (event_id DESC) AND
  bloom_filter_fp_chance=0.100000 AND
  caching='KEYS_ONLY' AND
  comment='' AND
  dclocal_read_repair_chance=0.000000 AND
  gc_grace_seconds=864000 AND
  index_interval=128 AND
  read_repair_chance=0.100000 AND
  populate_io_cache_on_flush='false' AND
  default_time_to_live=0 AND
  speculative_retry='99.0PERCENTILE' AND
  memtable_flush_period_in_ms=0 AND
  compaction={'sstable_size_in_mb': '64', 'tombstone_threshold':
'0.2', 'class': 'LeveledCompactionStrategy'} AND
  compression={'sstable_compression': 'LZ4Compressor'};


UPDATE shard75 set unread_ids = { } WHERE group_id = 'asd';

Bad Request: Missing mandatory PRIMARY KEY part event_id


Am I doing something unsupported here? I am trying to follow the
examples in the release docs (from cassandra 2.0.6)

Thank you,
Tommaso