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From Dmitri Smirnov <dsmir...@netflix.com>
Subject Describe keyspace output
Date Mon, 08 Nov 2010 19:21:58 GMT
I have created a CF with the following:

create column family CFam with column_type = 'Super' and comparator = 
'LongType' and subcomparator = 'UTF8Type' and comment = 'List of Tests 
Super Family' and column_metadata=[{ column_name:cell, 
validation_class:IntegerType}, { column_name:'created_by', 
validation_class:UTF8Type },{ column_name:'creation_ts', 
validation_class : LongType }, { column_name:'enabled', validation_class 
: UTF8Type }, { column_name :'subcategory_id', validation_class : 
LongType }, { column_name : 'update_ts', validation_class : LongType }]

  What is the meaning of  2 lines below:

- Subcolumns sorted by: org.apache.cassandra.db.marshal.LongType

- A long is exactly 8 bytes: 4
 > describe keyspace Kspace
Keyspace: Kspace:
   Replication Factor: 4
   Column Families:
     ColumnFamily: CFam (Super)
     "List of Tests Super Family"
       Columns sorted by: 
org.apache.cassandra.db.marshal.LongType/org.apache.cassandra.db.marshal.UTF8Type
       Subcolumns sorted by: org.apache.cassandra.db.marshal.LongType
       Row cache size / save period: 0.0/0
       Key cache size / save period: 200000.0/3600
       Memtable thresholds: 1.1203125/239/60
       GC grace seconds: 864000
       Compaction min/max thresholds: 4/32
       Column Metadata:
A long is exactly 8 bytes: 4

-- 
Dmitri Smirnov
Y!IM: ia_slepukhin


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