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https://issues.apache.org/jira/browse/DRILL-7491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17015039#comment-17015039
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ASF GitHub Bot commented on DRILL-7491:
---------------------------------------
ihuzenko commented on pull request #1955: DRILL-7491: Incorrect count()
returned for complex types in parquet
URL: https://github.com/apache/drill/pull/1955#discussion_r366303787
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/base/AbstractGroupScanWithMetadata.java
##########
@@ -180,7 +180,7 @@ public long getColumnValueCount(SchemaPath column) {
} else if (nonInterestingColStats != null) {
tableRowCount =
TableStatisticsKind.ROW_COUNT.getValue(getNonInterestingColumnsMetadata());
} else {
- return 0; // returns 0 if the column doesn't exist in the table.
+ return Statistic.NO_COLUMN_STATS;
Review comment:
Hello @arina-ielchiieva , thank you very much for describing the issue. I've
updated this PR, please take another look.
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> Incorrect count() returned for complex types in parquet
> -------------------------------------------------------
>
> Key: DRILL-7491
> URL: https://issues.apache.org/jira/browse/DRILL-7491
> Project: Apache Drill
> Issue Type: Bug
> Components: Functions - Drill, Functions - Hive, Storage - Parquet
> Affects Versions: 1.16.0, 1.17.0
> Reporter: Igor Guzenko
> Assignee: Igor Guzenko
> Priority: Major
> Fix For: 1.18.0
>
> Attachments: hive_alltypes.parquet
>
>
> To reproduce use the attached file for {{hive_alltypes.parquet}} (this is
> parquet file generated by Hive) and try count on columns *c13 - c15.* For
> example,
> {code:sql}
> SELECT count(c13) FROM dfs.tmp.`hive_alltypes.parquet`
> {code}
> *Expected result:* {color:green}3 {color}
> *Actual result:* {color:red}0{color}
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