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From Eric Evans <eev...@acunu.com>
Subject Re: CQL select not working for CF defined programatically with Hector API
Date Tue, 04 Oct 2011 02:19:48 GMT
On Mon, Oct 3, 2011 at 12:02 PM, Alexandru Sicoe <adsicoe@gmail.com> wrote:
> Hi,
>  I am using Cassandra 0.8.5, Hector 0.8.0-2 and cqlsh (cql 1.0.3). If I
> define a CF with comparator LongType like this:
>
>         BasicColumnFamilyDefinition columnFamilyDefinition = new
> BasicColumnFamilyDefinition();
>         columnFamilyDefinition.setKeyspaceName("XXX");
>         columnFamilyDefinition.setName("YYY");
>         columnFamilyDefinition.setDefaultValidationClass(_BYTESTYPE);
>         columnFamilyDefinition.setMemtableOperationsInMillions(0.1);
>         columnFamilyDefinition.setMemtableThroughputInMb(40);
>         columnFamilyDefinition.setComparatorType(ComparatorType.LONGTYPE);
>         try {
>             cluster.addColumnFamily(new
> ThriftCfDef(columnFamilyDefinition));
>         } catch(HectorException e) {
>                 throw e;
>         }
>
> Then I put some data in the CF.
>
> The I try to do the following queries in cqlsh:
>
>                           use XXX;
>                           select * from YYY where KEY='aaa';
>
> nothing is returned!
>
> If I however do:
>                           select * from YYY;
>
> all the results are returned propperly!
>
> So I have 2 questios:
> 1) Can I read with CQL if CFs were defined using the basic API? (the fact
> that select * from YYY; works suggests that this is possible)
> 2) If yes, what is the correct query to use to read data with CQL? (I
> suspect KEY is wrong...is there a default?)

I suspect that you did not select a key validation class, and ended up
with a default of BytesType.  CQL requires that your terms be hex
encoded when using BytesType.

-- 
Eric Evans
Acunu | http://www.acunu.com | @acunu

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