Tim Armstrong created IMPALA-5789:
-------------------------------------
Summary: Prune all partitions if an always-false runtime filter is
received
Key: IMPALA-5789
URL: https://issues.apache.org/jira/browse/IMPALA-5789
Project: IMPALA
Issue Type: Improvement
Components: Backend
Reporter: Tim Armstrong
The scenario is as follows:
* A query joins a large partitioned table with another table on a non-partition
column.
* All of the rows on the build side are filtered out, so the join has an empty
build.
Currently what happens is that all partitions of the large table are scanned
and the runtime filter filters all the rows out after materialization.
What would ideally happen is that the scan would notice that the runtime filter
always returns false and prune all of the partitions.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
