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https://issues.apache.org/jira/browse/DRILL-5796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16513955#comment-16513955
]
ASF GitHub Bot commented on DRILL-5796:
---------------------------------------
jbimbert commented on a change in pull request #1298: DRILL-5796: Filter
pruning for multi rowgroup parquet file
URL: https://github.com/apache/drill/pull/1298#discussion_r195775073
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/expr/stat/ParquetComparisonPredicate.java
##########
@@ -26,29 +26,22 @@
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
-import java.util.function.BiPredicate;
import static
org.apache.drill.exec.expr.stat.ParquetPredicatesHelper.isNullOrEmpty;
import static
org.apache.drill.exec.expr.stat.ParquetPredicatesHelper.isAllNulls;
/**
* Comparison predicates for parquet filter pushdown.
*/
-public class ParquetComparisonPredicate<C extends Comparable<C>> extends
LogicalExpressionBase
- implements ParquetFilterPredicate<C> {
+public abstract class ParquetComparisonPredicate<C extends Comparable<C>>
extends LogicalExpressionBase implements ParquetFilterPredicate<C> {
private final LogicalExpression left;
+
private final LogicalExpression right;
- private final BiPredicate<Statistics<C>, Statistics<C>> predicate;
- private ParquetComparisonPredicate(
- LogicalExpression left,
- LogicalExpression right,
- BiPredicate<Statistics<C>, Statistics<C>> predicate
- ) {
+ private ParquetComparisonPredicate(LogicalExpression left, LogicalExpression
right) {
super(left.getPosition());
this.left = left;
this.right = right;
- this.predicate = predicate;
Review comment:
Done
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> Filter pruning for multi rowgroup parquet file
> ----------------------------------------------
>
> Key: DRILL-5796
> URL: https://issues.apache.org/jira/browse/DRILL-5796
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - Parquet
> Reporter: Damien Profeta
> Assignee: Jean-Blas IMBERT
> Priority: Major
> Fix For: 1.14.0
>
>
> Today, filter pruning use the file name as the partitioning key. This means
> you can remove a partition only if the whole file is for the same partition.
> With parquet, you can prune the filter if the rowgroup make a partition of
> your dataset as the unit of work if the rowgroup not the file.
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