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https://issues.apache.org/jira/browse/DRILL-7491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17015584#comment-17015584
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ASF GitHub Bot commented on DRILL-7491:
---------------------------------------
paul-rogers commented on pull request #1955: DRILL-7491: Incorrect count()
returned for complex types in parquet
URL: https://github.com/apache/drill/pull/1955#discussion_r366677192
##########
File path:
logical/src/main/java/org/apache/drill/common/expression/SchemaPath.java
##########
@@ -334,36 +335,13 @@ public int hashCode() {
@Override
public boolean equals(Object obj) {
- if (this == obj) {
- return true;
- }
- if (obj == null) {
- return false;
- }
- if (!(obj instanceof SchemaPath)) {
- return false;
- }
-
- SchemaPath other = (SchemaPath) obj;
- if (rootSegment == null) {
- return (other.rootSegment == null);
- }
- return rootSegment.equals(other.rootSegment);
+ return this == obj || obj instanceof SchemaPath
+ && Objects.equals(rootSegment, ((SchemaPath) obj).rootSegment);
}
public boolean contains(Object obj) {
Review comment:
`contains()` is not a Java-defined method. Must the signature be `Object`?
Or, can it be `SchemaPath` since that is the only kind of thing a `SchemaPath`
could ever contain? Would save some casting.
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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
> Labels: ready-to-commit
> 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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