[jira] [Created] (CASSANDRA-12691) LWT: Inserting Subset of columns returns all columns

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

Highstead created CASSANDRA-12691:
-------------------------------------

             Summary: LWT: Inserting Subset of columns returns all columns
                 Key: CASSANDRA-12691
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12691
             Project: Cassandra
          Issue Type: Improvement
          Components: CQL
         Environment: 3.x
            Reporter: Highstead
            Priority: Minor


See: https://github.com/gocql/gocql/issues/792#issuecomment-248983669

When inserting a subset of the table columns with the use of light weight transactions the cassandra result returns a full set of unordered cassandra column values.  

SETUP:
```
CREATE TABLE IF NOT EXISTS test.inserttest(
    key bigint,
    session_token text,

    foo text, 
    bar text,
PRIMARY KEY(key, event_date, session_token);

INSERT INTO test.inserttest(key, session_token, foo) VALUES (1, 'myToken', 'baz') IF NOT EXISTS;
```

`insert into test.inserttest(key, session_token, foo) VALUES (1, 'myToken', 'bez') IF NOT EXISTS;`

Expected result: Returns False, 1, myToken, baz
Actual result: Returns true and all column values.



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