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From "Evan Weaver (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-357) CompareSubcolumnsWith= has no effect
Date Sun, 09 Aug 2009 20:44:14 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741139#action_12741139
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Evan Weaver commented on CASSANDRA-357:
---------------------------------------

 I have ordered hashes. Thrift returns:

[<CassandraThrift::ColumnOrSuperColumn column:<CassandraThrift::Column name:"\023\201@\0000\242\021\305\233\274a\252\a\300\325\355",
value:"v5", timestamp:1249850151372872>>,
 <CassandraThrift::ColumnOrSuperColumn column:<CassandraThrift::Column name:"\023\201@\000N\377\021\263\204\020\370\224\245\341\202\034",
value:"v1", timestamp:1249850151372872>>,
 <CassandraThrift::ColumnOrSuperColumn column:<CassandraThrift::Column name:"\023\201@\000\342\206\021\266\212\320\027J\207\000!\351",
value:"v3", timestamp:1249850151372872>>,
 <CassandraThrift::ColumnOrSuperColumn column:<CassandraThrift::Column name:"\023\201@\000\200,\021\264\226\217\311~\024\333qD",
value:"v2", timestamp:1249850151372872>>,
 <CassandraThrift::ColumnOrSuperColumn column:<CassandraThrift::Column name:"\023\201@\000\247:\021\273\2244\265\307*\375\200\237",
value:"v4", timestamp:1249850151372872>>]

If I add in TimeUUIDType:

    public int compare(byte[] o1, byte[] o2)
    {
+        if (true) { throw new MarshalException("Crap"); }
        long t1 = LexicalUUIDType.getUUID(o1).timestamp();
        long t2 = LexicalUUIDType.getUUID(o2).timestamp();
        return t1 < t2 ? -1 : (t1 > t2 ? 1 : 0);
    }

it's never thrown in any place that I can find, at least.


> CompareSubcolumnsWith= has no effect
> ------------------------------------
>
>                 Key: CASSANDRA-357
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-357
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Evan Weaver
>
> CompareSubcolumnsWith= has no effect.
>           <ColumnFamily CompareWith="UTF8Type" CompareSubcolumnsWith="TimeUUIDType"
ColumnType="Super" Name="StatusRelationships" />  
> I insert:
> <[<Cassandra::UUID#13700550 time: Sun Jan 24 00:40:32 -0800 1971>,
>  <Cassandra::UUID#13700530 time: Wed Feb 16 09:21:04 -0800 1972>,
>  <Cassandra::UUID#13700540 time: Wed Apr 03 03:42:08 -0700 1974>,
>  <Cassandra::UUID#13700520 time: Tue Jul 04 14:24:16 -0700 1978>,
>  <Cassandra::UUID#13700560 time: Mon Jan 05 10:48:32 -0800 1987>]> 
> But:
>     keys = @twitter.get(:StatusRelationships, key, "user_timelines").keys
> Responds with:
> <[<Cassandra::UUID#13700560 time: Mon Jan 05 10:48:32 -0800 1987>,
>  <Cassandra::UUID#13700550 time: Sun Jan 24 00:40:32 -0800 1971>,
>  <Cassandra::UUID#13700540 time: Wed Apr 03 03:42:08 -0700 1974>,
>  <Cassandra::UUID#13700530 time: Wed Feb 16 09:21:04 -0800 1972>,
>  <Cassandra::UUID#13700520 time: Tue Jul 04 14:24:16 -0700 1978>]>.
> PS. The debug log says:
> weakreadlocal reading SliceFromReadCommand(table='Twitter', key='test_get_super_sub_keys_with_ranges',
column_parent='QueryPath(columnFamilyName='StatusRelationships', superColumnName='[B@370410a7',
columnName='null')', start='', finish='', isAscending=true, count=100)

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