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https://issues.apache.org/jira/browse/CASSANDRA-8147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14177488#comment-14177488
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Russ Hatch commented on CASSANDRA-8147:
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I think there is not currently support for indexing both values and keys (ref:
http://www.datastax.com/dev/blog/cql-in-2-1)
In the example above the index is on keys only, but the select is attempting to
query a values index too. So the empty result is sort of correct, but there
should probably be a warning message to prevent confusion about this ("index
does not exist" or something like that).
/cc [~slebresne]
> Secondary indexing of map keys does not work properly when mixing contains
> and contains_key
> -------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-8147
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8147
> Project: Cassandra
> Issue Type: Bug
> Reporter: Benjamin Lerer
> Priority: Minor
>
> If you have a table with a map column and an index on the map key selecting
> data using a contains key and a contains will not return the expected data.
> The problem can be reproduced using the following unit test:
> {code}
> @Test
> public void testMapKeyContainsAndValueContains() throws Throwable
> {
> createTable("CREATE TABLE %s (account text, id int, categories
> map<text,text>, PRIMARY KEY (account, id))");
> createIndex("CREATE INDEX ON %s(keys(categories))");
> execute("INSERT INTO %s (account, id , categories) VALUES (?, ?, ?)",
> "test", 5, map("lmn", "foo"));
> assertRows(execute("SELECT * FROM %s WHERE account = ? AND id = ? AND
> categories CONTAINS KEY ? AND categories CONTAINS ? ALLOW FILTERING", "test",
> 5, "lmn", "foo"), row("test", 5, map("lmn", "foo")));
> }
> {code}
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