[jira] [Created] (CASSANDRA-7499) Unable to update list element by index using CAS condition

["DOAN DuyHai (JIRA)" <ji...@apache.org>]

DOAN DuyHai created CASSANDRA-7499:
--------------------------------------

             Summary: Unable to update list element by index using CAS condition
                 Key: CASSANDRA-7499
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7499
             Project: Cassandra
          Issue Type: Bug
          Components: Core
         Environment: Cassandra *2.0.9*, Java Driver *2.0.2* & *2.0.3*
Client: cqlsh *3.1.8*, CQL spec *3.1.0*, Thrift protocol *19.39.0*
            Reporter: DOAN DuyHai
            Priority: Critical


While running IT tests for *Achilles*, I ran into a strange bug:

*With CQLSH*

{code:sql}
cqlsh:test> CREATE TABLE cas_update(id int PRIMARY KEY,name text,friends list<text>);
cqlsh:test> INSERT INTO cas_update (id, name , friends ) VALUES ( 10,'John',['Paul','George']);
cqlsh:test> SELECT * FROM cas_update WHERE id=10;

 id | friends            | name
----+--------------------+------
 10 | ['Paul', 'George'] | John

cqlsh:test> UPDATE cas_update SET friends[0]='Helen' WHERE id=10 IF name='John';
Bad Request: List index 0 out of bound, list has size 0

cqlsh:test> UPDATE cas_update SET friends[0]='Helen' WHERE id=10;
cqlsh:test> SELECT * FROM cas_update WHERE id=10;

 id | friends             | name
----+---------------------+------
 10 | ['Helen', 'George'] | John
{code}

It seems that we cannot update list element by index with a CAS condition.

*With Java driver 2.0.2 or 2.0.3*

{code:java}
 ACHILLES_DML_STATEMENT@:writeDMLStatementLog Prepared statement : [INSERT INTO CompleteBean(id,followers,friends,name,preferences) VALUES (:id,:followers,:friends,:name,:preferences) USING TTL :ttl;] with CONSISTENCY LEVEL [ONE] 
 ACHILLES_DML_STATEMENT@:writeDMLStatementLog    bound values : [621309709026375591, [], [Paul, Andrew], John, {}, 0] 
 ACHILLES_DML_STATEMENT@:writeDMLStartBatch  
 ACHILLES_DML_STATEMENT@:writeDMLStartBatch  
 ACHILLES_DML_STATEMENT@:writeDMLStartBatch ****** BATCH UNLOGGED START ****** 
 ACHILLES_DML_STATEMENT@:writeDMLStartBatch  
 ACHILLES_DML_STATEMENT@:writeDMLStatementLog Parameterized statement : [UPDATE CompleteBean USING TTL 100 SET friends[0]=? WHERE id=621309709026375591 IF name=?;] with CONSISTENCY LEVEL [ONE] 
 ACHILLES_DML_STATEMENT@:writeDMLStatementLog    bound values : [100, 0, Helen, 621309709026375591, John] 
 ACHILLES_DML_STATEMENT@:writeDMLStatementLog Parameterized statement : [UPDATE CompleteBean USING TTL 100 SET friends[1]=null WHERE id=621309709026375591 IF name=?;] with CONSISTENCY LEVEL [ONE] 
 ACHILLES_DML_STATEMENT@:writeDMLStatementLog    bound values : [100, 1, null, 621309709026375591, John] 
 ACHILLES_DML_STATEMENT@:writeDMLEndBatch  
 ACHILLES_DML_STATEMENT@:writeDMLEndBatch   ****** BATCH UNLOGGED END with CONSISTENCY LEVEL [DEFAULT] ****** 
 ACHILLES_DML_STATEMENT@:writeDMLEndBatch  
 ACHILLES_DML_STATEMENT@:writeDMLEndBatch  
 ACHILLES_DML_STATEMENT@:truncateTable   Simple query : [TRUNCATE entity_with_enum] with CONSISTENCY LEVEL [ALL] 
 ACHILLES_DML_STATEMENT@:truncateTable   Simple query : [TRUNCATE CompleteBean] with CONSISTENCY LEVEL [ALL] 

com.datastax.driver.core.exceptions.InvalidQueryException: List index 0 out of bound, list has size 0
        at com.datastax.driver.core.exceptions.InvalidQueryException.copy(InvalidQueryException.java:35)
        at com.datastax.driver.core.DefaultResultSetFuture.extractCauseFromExecutionException(DefaultResultSetFuture.java:256)
        at com.datastax.driver.core.DefaultResultSetFuture.getUninterruptibly(DefaultResultSetFuture.java:172)
        at com.datastax.driver.core.AbstractSession.execute(AbstractSession.java:52)
{code}


With Cassandra *2.0.8* and Java Driver 2.0.2 or 2.0.3, *the test passed* so it seems that there is a regression somewhere in the CAS update code





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