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https://issues.apache.org/jira/browse/CASSANDRA-11031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429723#comment-15429723
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Alex Petrov commented on CASSANDRA-11031:
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[~blerer] I haven't made any code chances since the last submission, just fixed
/ improved dtest suite. Now, all tests pass. If you could take a look, it'd be
great. I haven't squashed commits just in case you'd like to see the history.
To roughly describe what I've done:
* short-circuited the PK & Static column queries in {{RowFilter}}, made sure
that checks for PK and static column expressions are done once only
* changed logic in {{processPartitionKeyRestrictions}}, hopefully making all
cases more elaborate
The rest is just minor adjustments.
|[trunk|https://github.com/ifesdjeen/cassandra/tree/11031-trunk]|[dtest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-11031-trunk-dtest/]|[testall|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-11031-trunk-testall/]|
> MultiTenant : support “ALLOW FILTERING" for Partition Key
> ---------------------------------------------------------
>
> Key: CASSANDRA-11031
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11031
> Project: Cassandra
> Issue Type: New Feature
> Components: CQL
> Reporter: ZhaoYang
> Assignee: ZhaoYang
> Priority: Minor
> Fix For: 3.x
>
>
> Currently, Allow Filtering only works for secondary Index column or
> clustering columns. And it's slow, because Cassandra will read all data from
> SSTABLE from hard-disk to memory to filter.
> But we can support allow filtering on Partition Key, as far as I know,
> Partition Key is in memory, so we can easily filter them, and then read
> required data from SSTable.
> This will similar to "Select * from table" which scan through entire cluster.
> CREATE TABLE multi_tenant_table (
> tenant_id text,
> pk2 text,
> c1 text,
> c2 text,
> v1 text,
> v2 text,
> PRIMARY KEY ((tenant_id,pk2),c1,c2)
> ) ;
> Select * from multi_tenant_table where tenant_id = "datastax" allow filtering;
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