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From "dan jatnieks (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-9077) NPE
Date Tue, 31 Mar 2015 04:48:53 GMT
dan jatnieks created CASSANDRA-9077:
---------------------------------------

             Summary: NPE
                 Key: CASSANDRA-9077
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9077
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: dan jatnieks
            Priority: Minor


I am seeing an NPE on the latest 2.1 branch with this sequence of deletes from a list - first
delete the entire list, then attempt to delete one element.

I expected to see {{List index 0 out of bound, list has size 0}} but instead got an NPE.

{noformat}
./bin/cqlsh
Connected to Test Cluster at 127.0.0.1:9042.
[cqlsh 5.0.1 | Cassandra 2.1.3-SNAPSHOT | CQL spec 3.2.0 | Native protocol v3]
Use HELP for help.
cqlsh> use frozen_collections ;
cqlsh:frozen_collections> DROP TABLE IF EXISTS t;
cqlsh:frozen_collections> CREATE TABLE t (id text PRIMARY KEY, l list<text>, s set<text>);
cqlsh:frozen_collections> INSERT INTO t (id, l, s) VALUES ('user', ['1'], {'1'});
cqlsh:frozen_collections>
cqlsh:frozen_collections> DELETE l FROM t WHERE id ='user';
cqlsh:frozen_collections> //INSERT INTO t (id, l) VALUES ('user', ['1']);
cqlsh:frozen_collections> DELETE l[0] FROM t WHERE id = 'user';
ServerError: <ErrorMessage code=0000 [Server error] message="java.lang.NullPointerException">
cqlsh:frozen_collections>
cqlsh:frozen_collections> DELETE s FROM t WHERE id ='user';
cqlsh:frozen_collections> DELETE s['1'] FROM t WHERE id = 'user';{noformat}

It appears the {{DELETE emails...}} directly followed by {{DELETE emails[0]...}} is the offending
sequence. Either one alone works fine, as does adding an intervening insert/update.





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