I added a row with a single column to my 1.0.8 single-node cluster:
RowKey: aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
=> (column=test, value=hi, timestamp=...)
I immediately deleted the row using both the CLI and CQL:
del Foo[lexicaluuid('aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa')];
delete from Foo using consistency all where
KEY=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
In either case, the column "test" is gone but the empty row key still
remains, and the row count reflects the presence of this phantom row.
I've tried nodetool compact/repair/flush/cleanup/scrub/etc. and nothing
removes the row key.
How do I get rid of it?
BTW, I saw this little tidbit in the describe output:
Row cache size / save period in seconds / keys to save : 0.0/0/all
Does "all" here mean to keep the keys for empty rows? If so, how do I
change that behavior?
ColumnFamily: "Foo"
"..."
Key Validation Class: org.apache.cassandra.db.marshal.UUIDType
Default column value validator:
org.apache.cassandra.db.marshal.UTF8Type
Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type
Row cache size / save period in seconds / keys to save : 0.0/0/all
Row Cache Provider:
org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider
Key cache size / save period in seconds: 200000.0/14400
GC grace seconds: 864000000
Compaction min/max thresholds: 4/32
Read repair chance: 0.1
Replicate on write: true
Bloom Filter FP chance: default
Built indexes: []
Compaction Strategy:
org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
Todd
