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From Brian O'Neill <b...@alumni.brown.edu>
Subject Re: Compund/Composite column names
Date Mon, 17 Dec 2012 15:40:48 GMT

Will do.  

---
Brian O'Neill
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From:  Sylvain Lebresne <sylvain@datastax.com>
Date:  Monday, December 17, 2012 10:35 AM
To:  <dev@cassandra.apache.org>
Cc:  Vivek Mishra <vivek.mishra@yahoo.com>, Brian O'Neill
<bone@alumni.brown.edu>
Subject:  Re: Compund/Composite column names

Feel free to open a ticket with steps to reproduce. We can certainly throw a
more meaningful exception.


On Mon, Dec 17, 2012 at 4:11 PM, Edward Capriolo <edlinuxguru@gmail.com>
wrote:
> This was discussed in one of the tickets. The problem is that CQL3's sparse
> tables is it has different metadata that has NOT been added to thrift's
> CFMetaData. Thus thrift is unaware of exactly how to verify the insert.
> 
> Originally it was made impossible for thrift to see a sparse table (but
> that restriction has been lifted) it seems. It is probably a bad idea to
> thrift insert into a sparse table until Cassandra does not have two
> distinct sources of meta information.
> 
> 
> 
> 
> 
> On Mon, Dec 17, 2012 at 9:52 AM, Vivek Mishra <vivek.mishra@yahoo.com>wrote:
> 
>> > Looks like Thrift API is not working as expected?
>> >
>> > -Vivek
>> >
>> >
>> >
>> >
>> > ________________________________
>> >  From: Brian O'Neill <bone@alumni.brown.edu>
>> > To: dev@cassandra.apache.org
>> > Cc: Vivek Mishra <vivek.mishra@yahoo.com>
>> > Sent: Monday, December 17, 2012 8:12 PM
>> > Subject: Re: Compund/Composite column names
>> >
>> > FYI -- I'm still seeing this on 1.2-beta1.
>> >
>> > If you create a table via CQL, then insert into it (via Java API) with
>> > an incorrect number of components.  The insert works, but select *
>> > from CQL results in a TSocket read error.
>> >
>> > I showed this in the webinar last week, just in case people ran into
>> > it.  It would be great to translate the ArrayIndexOutofBoundsException
>> > from the server side into something meaningful in cqlsh to help people
>> > diagnose the problem.  (a regular user probably doesn't have access to
>> > the server-side logs)
>> >
>> > You can see it at minute 41 in the video from the webinar:
>> > http://www.youtube.com/watch?v=AdfugJxfd0o&feature=youtu.be
>> >
>> > -brian
>> >
>> >
>> > On Tue, Oct 9, 2012 at 9:39 AM, Jonathan Ellis <jbellis@gmail.com> wrote:
>>> > > Sounds like you're running into the keyspace drop bug.  It's "mostly"
>> > fixed
>>> > > in 1.1.5 but you might need the latest from 1.1 branch.  1.1.6 will
be
>>> > > released soon with the final fix.
>>> > > On Oct 9, 2012 1:58 AM, "Vivek Mishra" <vivek.mishra@yahoo.com>
wrote:
>>> > >
>>>> > >>
>>>> > >>
>>>> > >> Ok. I am able to understand the problem now. Issue is:
>>>> > >>
>>>> > >> If i create a column family altercations as:
>>>> > >>
>>>> > >>
>>>> > >>
>> > 
>> *****************************************************************************
>> *****************************8
>>>> > >> CREATE TABLE altercations (
>>>> > >>        instigator text,
>>>> > >>        started_at timestamp,
>>>> > >>        ships_destroyed int,
>>>> > >>        energy_used float,
>>>> > >>        alliance_involvement boolean,
>>>> > >>        PRIMARY KEY (instigator,started_at,ships_destroyed)
>>>> > >>    );
>>>> > >> /
>>>> > >>    INSERT INTO altercations (instigator, started_at, ships_destroyed,
>>>> > >>                              energy_used, alliance_involvement)
>>>> > >>                      VALUES ('Jayne Cobb', '2012-07-23', 2,
4.6,
>> > 'false');
>>>> > >>
>>>> > >>
>> > 
>> *****************************************************************************
>> ****************************************
>>>> > >>
>>>> > >> It works!
>>>> > >>
>>>> > >> But if i create a column family with compound primary key with
2
>> > composite
>>>> > >> column as:
>>>> > >>
>>>> > >>
>>>> > >>
>> > 
>> *****************************************************************************
>> ****************************************
>>>> > >> CREATE TABLE altercations (
>>>> > >>        instigator text,
>>>> > >>        started_at timestamp,
>>>> > >>        ships_destroyed int,
>>>> > >>        energy_used float,
>>>> > >>        alliance_involvement boolean,
>>>> > >>        PRIMARY KEY (instigator,started_at)
>>>> > >>    );
>>>> > >>
>>>> > >>
>>>> > >>
>> > 
>> *****************************************************************************
>> ****************************************
>>>> > >> and Then drop this column family:
>>>> > >>
>>>> > >>
>>>> > >>
>> > 
>> *****************************************************************************
>> ****************************************
>>>> > >> drop columnfamily altercations;
>>>> > >>
>>>> > >>
>> > 
>> *****************************************************************************
>> ****************************************
>>>> > >>
>>>> > >> and then try to create same one with primary compound key with
3
>> > composite
>>>> > >> column:
>>>> > >>
>>>> > >>
>>>> > >>
>> > 
>> *****************************************************************************
>> ****************************************
>>>> > >>
>>>> > >> CREATE TABLE altercations (
>>>> > >>        instigator text,
>>>> > >>        started_at timestamp,
>>>> > >>        ships_destroyed int,
>>>> > >>        energy_used float,
>>>> > >>        alliance_involvement boolean,
>>>> > >>        PRIMARY KEY (instigator,started_at,ships_destroyed)
>>>> > >>    );
>>>> > >>
>>>> > >>
>> > 
>> *****************************************************************************
>> ****************************************
>>>> > >>
>>>> > >> it gives me error: "TSocket read 0 bytes"
>>>> > >>
>>>> > >> Rest, as no column family is created, so nothing onwards will
work.
>>>> > >>
>>>> > >> Is this an issue?
>>>> > >>
>>>> > >> -Vivek
>>>> > >>
>>>> > >>
>>>> > >> ________________________________
>>>> > >>  From: Jonathan Ellis <jbellis@gmail.com>
>>>> > >> To: dev@cassandra.apache.org; Vivek Mishra <vivek.mishra@yahoo.com>
>>>> > >> Sent: Tuesday, October 9, 2012 9:08 AM
>>>> > >> Subject: Re: Compund/Composite column names
>>>> > >>
>>>> > >> Works for me on latest 1.1 in cql3 mode.  cql2 mode gives a
parse >>>>
error.
>>>> > >>
>>>> > >> On Mon, Oct 8, 2012 at 9:18 PM, Vivek Mishra <vivek.mishra@yahoo.com>
>>>> > >> wrote:
>>>>> > >> > Hi All,
>>>>> > >> >
>>>>> > >> > I am trying to use compound primary key column name
and i am
>>>>> referring
>>>> > >> to:
>>>>> > >> > http://www.datastax.com/dev/blog/whats-new-in-cql-3-0
>>>>> > >> >
>>>>> > >> >
>>>>> > >> > As mentioned on this example, i tried to create a
column family
>>>> > >> containing compound primary key (one or more) as:
>>>>> > >> >
>>>>> > >> >  CREATE TABLE altercations (
>>>>> > >> >        instigator text,
>>>>> > >> >        started_at timestamp,
>>>>> > >> >        ships_destroyed int,
>>>>> > >> >        energy_used float,
>>>>> > >> >        alliance_involvement boolean,
>>>>> > >> >        PRIMARY KEY (instigator,started_at,ships_destroyed)
>>>>> > >> >    );
>>>>> > >> >
>>>>> > >> > And i am getting:
>>>>> > >> >
>>>>> > >> >
>>>>> > >> > 
>>>>> **********************************************************************
>>>>> > >> > TSocket read 0 bytes
>>>>> > >> > cqlsh:testcomp>
>>>>> > >> > 
>>>>> **********************************************************************
>>>>> > >> >
>>>>> > >> >
>>>>> > >> > Then followed by insert and select statements giving
me following
>> > errors:
>>>>> > >> >
>>>>> > >> >
>>>> > >>
>> > 
>> *****************************************************************************
>> ***************************************************************
>>>>> > >> >
>>>>> > >> > cqlsh:testcomp>    INSERT INTO altercations (instigator,
>>>>> started_at,
>>>> > >> ships_destroyed,
>>>>> > >> >             ...                              energy_used,
>>>> > >> alliance_involvement)
>>>>> > >> >             ...                      VALUES ('Jayne
Cobb',
>> > '2012-07-23',
>>>> > >> 2, 4.6, 'false');
>>>>> > >> > TSocket read 0 bytes
>>>>> > >> >
>>>>> > >> > cqlsh:testcomp> select * from altercations;
>>>>> > >> > Traceback (most recent call last):
>>>>> > >> >   File "bin/cqlsh", line 1008, in perform_statement
>>>>> > >> >     self.cursor.execute(statement, decoder=decoder)
>>>>> > >> >   File
>>>> > >> "bin/../lib/cql-internal-only-1.0.10.zip/cql-1.0.10/cql/cursor.py",
line
>>>> > >> 117, in execute
>>>>> > >> >     response = self.handle_cql_execution_errors(doquery,
>>>>> prepared_q,
>>>> > >> compress)
>>>>> > >> >   File
>>>> > >> "bin/../lib/cql-internal-only-1.0.10.zip/cql-1.0.10/cql/cursor.py",
line
>>>> > >> 132, in handle_cql_execution_errors
>>>>> > >> >     return executor(*args, **kwargs)
>>>>> > >> >   File
>>>> > >>
>> > 
>> 
"bin/../lib/cql-internal-only-1.0.10.zip/cql-1.0.10/cql/cassandra/Cassandra.p>>
y",
>>>> > >> line 1583, in execute_cql_query
>>>>> > >> >     self.send_execute_cql_query(query, compression)
>>>>> > >> >   File
>>>> > >>
>> > 
>> 
"bin/../lib/cql-internal-only-1.0.10.zip/cql-1.0.10/cql/cassandra/Cassandra.p>>
y",
>>>> > >> line 1593, in send_execute_cql_query
>>>>> > >> >     self._oprot.trans.flush()
>>>>> > >> >   File
>>>> > >>
>> > 
>> "bin/../lib/thrift-python-internal-only-0.7.0.zip/thrift/transport/TTransport
>> .py",
>>>> > >> line 293, in flush
>>>>> > >> >     self.__trans.write(buf)
>>>>> > >> >   File
>>>> > >>
>> > 
>> 
"bin/../lib/thrift-python-internal-only-0.7.0.zip/thrift/transport/TSocket.py>>
",
>>>> > >> line 117, in write
>>>>> > >> >     plus = self.handle.send(buff)
>>>>> > >> > error: [Errno 32] Broken pipe
>>>>> > >> >
>>>>> > >> > cqlsh:testcomp>
>>>>> > >> >
>>>>> > >> >
>>>> > >>
>> > 
>> *****************************************************************************
>> ***************************************************************
>>>>> > >> >
>>>>> > >> >
>>>>> > >> >
>>>>> > >> > Any idea?
>>>>> > >> >
>>>>> > >> >
>>>>> > >> > -Vivek
>>>> > >>
>>>> > >>
>>>> > >>
>>>> > >> --
>>>> > >> Jonathan Ellis
>>>> > >> Project Chair, Apache Cassandra
>>>> > >> co-founder of DataStax, the source for professional Cassandra
support
>>>> > >> http://www.datastax.com
>> >
>> >
>> >
>> > --
>> > Brian ONeill
>> > Lead Architect, Health Market Science (http://healthmarketscience.com)
>> >
>> > mobile:215.588.6024 <tel:215.588.6024>
>> > blog: http://brianoneill.blogspot.com/
>> > twitter: @boneill42




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