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Date: Wed, 3 Nov 2010 17:59:51 -0400
Message-ID: <AANLkTinoy5G+fgD+5Q1LYkeZ8x22Wu3_qXsHtwEz35Jy@mail.gmail.com>
Subject: Re: Consistency level All for read operation
From: Jonathan Ellis <jbellis@gmail.com>
To: dev <dev@cassandra.apache.org>
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0.6.6 is the right version to use.

On Wed, Nov 3, 2010 at 5:43 PM, Maifi Khan <maifi.khan@gmail.com> wrote:
> Aha. We have 0.6.2
> So 0.6.3 is the right version to use?
>
> thanks
> Maifi
>
> On Wed, Nov 3, 2010 at 4:34 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
>> You are looking at obsolete code.
>>
>> CHANGES.txt
>> 0.6.3
>> =A0* don't reject reads at CL.ALL (CASSANDRA-1152)
>>
>>
>> On Wed, Nov 3, 2010 at 5:27 PM, Maifi Khan <maifi.khan@gmail.com> wrote:
>>> Hi
>>> Inside org.apache.cassandra.thrift, =A0in CassandraServer.java, it seem=
s
>>> that read operation for Consistency level =A0"all" is not supported.
>>>
>>> Is this the case?
>>> Does this mean there is no way to read from all the copy? =A0if there
>>> are 3 copies of data, I would like to read all of them.
>>>
>>> I gave the code snippet below.
>>>
>>>
>>>
>>> =A0protected Map<String, ColumnFamily>
>>> readColumnFamily(List<ReadCommand> commands, ConsistencyLevel
>>> consistency_level)
>>> =A0 =A0throws InvalidRequestException, UnavailableException, TimedOutEx=
ception
>>> =A0 =A0{
>>> =A0 =A0 =A0 =A0// TODO - Support multiple column families per row, righ=
t now
>>> row only contains 1 column family
>>> =A0 =A0 =A0 =A0Map<String, ColumnFamily> columnFamilyKeyMap =3D new
>>> HashMap<String,ColumnFamily>();
>>>
>>> =A0 =A0 =A0 =A0if (consistency_level =3D=3D ConsistencyLevel.ZERO)
>>> =A0 =A0 =A0 =A0{
>>> =A0 =A0 =A0 =A0 =A0 =A0throw new InvalidRequestException("Consistency l=
evel zero
>>> may not be applied to read operations");
>>> =A0 =A0 =A0 =A0}
>>> =A0 =A0 =A0 =A0if (consistency_level =3D=3D ConsistencyLevel.ALL)
>>> =A0 =A0 =A0 =A0{
>>> =A0 =A0 =A0 =A0 =A0 =A0throw new InvalidRequestException("Consistency l=
evel all
>>> is not yet supported on read operations");
>>> =A0 =A0 =A0 =A0}
>>> =A0 =A0 =A0 =A0if (consistency_level =3D=3D ConsistencyLevel.ANY)
>>> =A0 =A0 =A0 =A0{
>>> =A0 =A0 =A0 =A0 =A0 =A0throw new InvalidRequestException("Consistency l=
evel any
>>> may not be applied to read operations");
>>> =A0 =A0 =A0 =A0}
>>>
>>>
>>>
>>> thanks
>>> Maifi
>>>
>>
>>
>>
>> --
>> Jonathan Ellis
>> Project Chair, Apache Cassandra
>> co-founder of Riptano, the source for professional Cassandra support
>> http://riptano.com
>>
>


--=20
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com