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From "Jürgen Link" <>
Subject Re: cant seem to figure out secondary index definition
Date Mon, 07 Mar 2011 09:11:57 GMT
Am 07.03.2011 02:10, schrieb Tyler Hobbs:
> You want to add an index on a CF with TimeUUIDType column names?  I 
> think you've probably mistaken the purpose of compare_with.
> If you haven't, I think you'll need to add the index programmatically 
> in order to specify a non ascii/unicode column name for the index.

I'd like to pull up Roland's original post here. We have the following 
our IndexedSliceQueries work perfectly against our cassandra cluster, 
defining indexes via CLI:

create column family A with column_type='Standard' and
>>  comparator='TimeUUIDType' and keys_cached=200000 and read_repair_chance=1.0
>>  and rows_cached=0.0 and column_metadata=[{column_name:
>>  00000000-0000-1000-0000-000000000000, validation_class: UTF8Type,
>>  index_name: MyIndex, index_type: KEYS}];

The only stuff we can't get to work is with embedded cassandra instance 
for our unit tests.
We currently define our indexes _for the embedded instance_ with the 
following yaml directives:

   - column_metadata: [{name: 00000000-0000-1000-0000-000000000000,
      validator_class: UTF8Type, index_name: MyIndex, index_type: KEYS}]
       compare_with: TimeUUIDType
       gc_grace_seconds: 864000
       keys_cached: 0.0
       max_compaction_threshold: 32
       min_compaction_threshold: 4
       name: A
       read_repair_chance: 1.0
       rows_cached: 0.0

So, the question remains: how can we transform our perfectly-working 
index definition from
above to a reasonable yaml-definition for an embedded instance?
If yaml isn't suitable for this task, what would be the preferred way to 
do it programmatically?


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