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https://issues.apache.org/jira/browse/CASSANDRA-1157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12891893#action_12891893
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Nate McCall commented on CASSANDRA-1157:
----------------------------------------
test_thrift_server fails with the message below.
There are two issues here though:
1) it looks like the RowPredicate is not getting reset with the IndexClause
(ln: 1251), when I add that, I get a similar error from the next scan about
"unable to scan unindexed column" again because RowPredicate is not reset.
After reseting, I still get the same error.
2) Though the system test implies indexed and non-indexed will play nice on the
same IndexExpression, ThriftValidation does not agree, throwing an exception on
the first missing column encountered.
Initial error after rebase and patches applied:
~~~~
nate:cassandra-TRUNK$ python=test nosetests
--tests=system.test_thrift_server:TestMutations.test_index_scan
/usr/local/lib/python2.6/dist-packages/thrift/Thrift.py:58: DeprecationWarning:
BaseException.message has been deprecated as of Python 2.6
self.message = message
E
======================================================================
ERROR: system.test_thrift_server.TestMutations.test_index_scan
----------------------------------------------------------------------
Traceback (most recent call last):
File "/var/lib/python-support/python2.6/nose/case.py", line 182, in runTest
self.test(*self.arg)
File
"/home/nate/workspace/cassandra-TRUNK/test/system/test_thrift_server.py", line
1252, in test_index_scan
_expect_exception(lambda: client.scan(cp, rp, sp, ConsistencyLevel.ONE),
InvalidRequestException)
File
"/home/nate/workspace/cassandra-TRUNK/test/system/test_thrift_server.py", line
173, in _expect_exception
raise Exception('expected %s; got %s' % (type_.__name__, r))
Exception: expected InvalidRequestException; got
[KeySlice(columns=[ColumnOrSuperColumn(column=Column(ttl=None,
name='birthdate', value='\x00\x00\x00\x00\x00\x00\x00\x01',
clock=Clock(timestamp=0)), super_column=None)], key='key1')]
----------------------------------------------------------------------
Ran 1 test in 2.430s
> add support for multiple indexexpressions
> -----------------------------------------
>
> Key: CASSANDRA-1157
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1157
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Fix For: 0.7 beta 1
>
> Attachments: 1157.txt
>
>
> we should:
> - use the statistics from CASSANDRA-1155 to figure out which index has the
> highest selectivity, and start with that
> - if other indexes have high selectivity (average number of columns in an
> index row is less than 1% of total in that CF), we should do a merge join
> - otherwise, just loop the results from the first and reject un-satisfied
> expressions
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