Jackie-Jiang commented on a change in pull request #4989: Add documentation to
fields of important query execution stats.
URL: https://github.com/apache/incubator-pinot/pull/4989#discussion_r369180838
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File path:
pinot-core/src/main/java/org/apache/pinot/core/operator/ExecutionStatistics.java
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@@ -22,8 +22,12 @@
* The <code>ExecutionStatistics</code> class contains the operator statistics
during execution time.
*/
public class ExecutionStatistics {
+ // The number of documents scanned post filtering.
private long _numDocsScanned;
+ // The number of doc ids scanned in the filtering phase of the query
execution: could be larger than the total doc num
+ // because of multiple filtering predicates.
private long _numEntriesScannedInFilter;
+ // Equal to _numDocsScanned * number_of_projected_columns
Review comment:
`Equal to numDocsScanned * numProjectedColumns`
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