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https://issues.apache.org/jira/browse/KUDU-1363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15517891#comment-15517891
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Dan Burkert commented on KUDU-1363:
-----------------------------------
I'm going to rename this to 'Add IN-list column predicate type', since that's
what it has turned into. If we want disjunctive {{OR}} predicates we can open
another issue. Over the last couple of days I've rebased [~sabhyankar]'s
patch, and I think it's getting close to being merged, review:
https://gerrit.cloudera.org/#/c/2986/. I also have a separate patch to add
support to the Java client: https://gerrit.cloudera.org/#/c/4530/. I'm going
to file separate issues for landing in the Spark connector, and an IMPALA issue
for impala integration.
> Add Multiple column range predicates for the same column in a single scan
> -------------------------------------------------------------------------
>
> Key: KUDU-1363
> URL: https://issues.apache.org/jira/browse/KUDU-1363
> Project: Kudu
> Issue Type: New Feature
> Components: client, perf, tablet
> Reporter: Chris George
> Assignee: Sameer Abhyankar
>
> Currently adding multiple column range predicates for the same column does
> essentially an AND between the two predicates which will cause no results to
> be returned.
> This would greatly increase performance were I can complete in one scan what
> would otherwise take two.
> As an example using the java api:
> ColumnRangePredicate columnRangePredicateColumnNameA = new
> ColumnRangePredicate(new ColumnSchema.ColumnSchemaBuilder("column_name",
> Type.STRING).build());
> columnRangePredicateColumnNameA.setLowerBound("A");
> columnRangePredicateColumnNameA.setUpperBound("A");
> ColumnRangePredicate columnRangePredicateColumnNameB = new
> ColumnRangePredicate(new ColumnSchema.ColumnSchemaBuilder("column_name",
> Type.STRING).build());
> columnRangePredicateColumnNameB.setLowerBound("B");
> columnRangePredicateColumnNameB.setUpperBound("B");
> which would be equivalent:
> select * from some_table where column_name="A" or column_name="B"
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