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https://issues.apache.org/jira/browse/HIVE-26320?focusedWorklogId=813167&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-813167
 ]

ASF GitHub Bot logged work on HIVE-26320:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 29/Sep/22 00:25
            Start Date: 29/Sep/22 00:25
    Worklog Time Spent: 10m 
      Work Description: kasakrisz commented on code in PR #3628:
URL: https://github.com/apache/hive/pull/3628#discussion_r982958033


##########
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/serde/ParquetHiveSerDe.java:
##########
@@ -91,11 +93,61 @@ public class ParquetHiveSerDe extends AbstractSerDe 
implements SchemaInference {
 
   private ObjectInspector objInspector;
   private ParquetHiveRecord parquetRow;
+  private ObjectInspectorConverters.Converter converter;
 
   public ParquetHiveSerDe() {
     parquetRow = new ParquetHiveRecord();
   }
 
+  // Recursively check if CHAR or VARCHAR types are used
+  private boolean needsConversion(TypeInfo type) {
+    if 
(type.getTypeName().toLowerCase().startsWith(serdeConstants.CHAR_TYPE_NAME) ||
+        
type.getTypeName().toLowerCase().startsWith(serdeConstants.VARCHAR_TYPE_NAME)) {
+      return true;
+    }
+
+    if (type.getCategory().equals(Category.STRUCT)) {
+      StructTypeInfo sti = (StructTypeInfo) type;
+      for (TypeInfo t : sti.getAllStructFieldTypeInfos()) {
+        if (needsConversion(t)) {
+          return true;
+        }
+      }
+    }
+
+    if (type.getCategory().equals(Category.MAP)) {
+      TypeInfo keyTypeInfo = ((MapTypeInfo) type).getMapKeyTypeInfo();
+      if (needsConversion(keyTypeInfo)) {
+        return true;
+      }
+      TypeInfo valueTypeInfo = ((MapTypeInfo) type).getMapKeyTypeInfo();

Review Comment:
   Both calls are `getMapKeyTypeInfo`. Should one of these be 
`getMapValueTypeInfo`?





Issue Time Tracking
-------------------

    Worklog Id:     (was: 813167)
    Time Spent: 1h 20m  (was: 1h 10m)

> Incorrect case evaluation for Parquet based table
> -------------------------------------------------
>
>                 Key: HIVE-26320
>                 URL: https://issues.apache.org/jira/browse/HIVE-26320
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2, Query Planning
>    Affects Versions: 4.0.0-alpha-1
>            Reporter: Chiran Ravani
>            Assignee: John Sherman
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> Query involving case statement with two or more conditions leads to incorrect 
> result for tables with parquet format, The problem is not observed with ORC 
> or TextFile.
> *Steps to reproduce*:
> {code:java}
> create external table case_test_parquet(kob varchar(2),enhanced_type_code 
> int) stored as parquet;
> insert into case_test_parquet values('BB',18),('BC',18),('AB',18);
> select case when (
>                    (kob='BB' and enhanced_type_code='18')
>                    or (kob='BC' and enhanced_type_code='18')
>                  )
>             then 1
>             else 0
>         end as logic_check
> from case_test_parquet;
> {code}
> Result:
> {code}
> 0
> 0
> 0
> {code}
> Expected result:
> {code}
> 1
> 1
> 0
> {code}
> The problem does not appear when setting hive.optimize.point.lookup=false.



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