GitHub user spanchamiamapr opened a pull request:
https://github.com/apache/drill/pull/700
DRILL-5137 - Optimize count(*) queries on MapR-DB Binary Tables
This diff uses the same optimization as that for the rowKeyOnly queries.
We use the FirstKeyOnlyFilter for count(*) queries.
This fix will optimize these queries for HBase tables, as well as MapR-DB
Binary tables.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/spanchamiamapr/drill drill-5137
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/700.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #700
----
commit 52765e5420be0db5e12b68d161ac06ea1855d3a0
Author: Smidth Panchamia <[email protected]>
Date: 2016-12-21T09:53:21Z
DRILL-5137 - This diff uses the same optimization as that for the
rowKeyOnly queries.
We use the FirstKeyOnlyFilter for count(*) queries.
This fix will optimize these queries for HBase tables, as well as MapR-DB
Binary tables.
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
