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From "Tyler Hobbs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7656) UDT with null/missing attributes
Date Fri, 01 Aug 2014 16:29:43 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14082438#comment-14082438
] 

Tyler Hobbs commented on CASSANDRA-7656:
----------------------------------------

It looks like this is a problem with how the python driver (and hence cqlsh) handles deserialization
of null items.  I'll verify that's the case for the java driver as well.

> UDT with null/missing attributes 
> ---------------------------------
>
>                 Key: CASSANDRA-7656
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7656
>             Project: Cassandra
>          Issue Type: Bug
>          Components: API, Core
>            Reporter: Jaroslav Kamenik
>            Assignee: Tyler Hobbs
>            Priority: Minor
>             Fix For: 2.1.0
>
>
> I have experienced problem with queriing UDTs stored with some not filled attributes
through new java driver 2.1. I tried to query them in cqlsh too and it failed. I tried to
simulate it again with fresh C* directly in cqlsh and it seems it has problems in some cases.
I have tested it with UDT defined as (a ascii, b ascii, c ascii, d ascii, e ascii, f ascii,
g ascii). 
> Few observations:
> {noformat}
> Store {a:'a'} is ok, it returns {a: 'a', b: '', c: '', d: '', e: '', f: '', g: ''}
> Store {a:'a', b:'b', c:'c', d:'d', e:'e', f:'f', g:'g'} is ok, returns all filled.
> Store {a:'a',  g:'g'} fills a only.
> Store {a:'a', b:'b', d:'d', e:'e', f:'f', g:'g'} (missing c) failed on load.
> Store {a:'a', f:'f', g:'g'} fills just a. 
> Store {f:'f',g:'g'} nothing filled
> Store {e:'e',f:'f',g:'g'} failed on load.
> ....
> {noformat}
> you can reproduce it with:
> {noformat}
> ./cqlsh
> Connected to WOC at 127.0.0.1:9042.
> [cqlsh 5.0.1 | Cassandra 2.1.0-rc4 | CQL spec 3.2.0 | Native protocol v3]
> Use HELP for help.
> cqlsh> create keyspace testks WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor'
: 1};
> cqlsh> use testks;
> cqlsh:testks> CREATE TYPE IF NOT EXISTS data (a ascii, b ascii, c ascii, d ascii,
e ascii, f ascii, g ascii);
> cqlsh:testks> CREATE TABLE IF NOT EXISTS bbb (a ascii primary key, b data);
> cqlsh:testks> insert into testks.bbb (a,b) values ('a', {a:'a'});
> cqlsh:testks> select * from bbb;
>  a | b
> ---+----------------------------------------------------
>  a | {a: 'a', b: '', c: '', d: '', e: '', f: '', g: ''}
> (1 rows)
> cqlsh:testks> insert into testks.bbb (a,b) values ('a', {a:'a', b:'b', c:'c', d:'d',
e:'e', f:'f', g:'g'});
> cqlsh:testks> select * from bbb;
>  a | b
> ---+----------------------------------------------------------
>  a | {a: 'a', b: 'b', c: 'c', d: 'd', e: 'e', f: 'f', g: 'g'}
> (1 rows)
> cqlsh> insert into testks.bbb (a,b) values ('a', {a:'a',  g:'g'});
> cqlsh> select * from testks.bbb;
>  a | b
> ---+----------------------------------------------------
>  a | {a: 'a', b: '', c: '', d: '', e: '', f: '', g: ''}
> (1 rows)
> cqlsh:testks> insert into testks.bbb (a,b) values ('a', {a:'a', b:'b', d:'d', e:'e',
f:'f', g:'g'});
> cqlsh:testks> select * from bbb;
> Traceback (most recent call last):
>   File "./cqlsh", line 901, in perform_simple_statement
>     rows = self.session.execute(statement, trace=self.tracing_enabled)
>   File "/srv/apache-cassandra-2.1.0-rc4/bin/../lib/cassandra-driver-internal-only-2.1.0b1.post.zip/cassandra-driver-2.1.0b1.post/cassandra/cluster.py",
line 1186, in execute
>     result = future.result(timeout)
>   File "/srv/apache-cassandra-2.1.0-rc4/bin/../lib/cassandra-driver-internal-only-2.1.0b1.post.zip/cassandra-driver-2.1.0b1.post/cassandra/cluster.py",
line 2610, in result
>     raise self._final_exception
> error: unpack requires a string argument of length 4
> {noformat}



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