[ 
https://issues.apache.org/jira/browse/HIVE-28518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17880956#comment-17880956
 ] 
Gopinath commented on HIVE-28518:
---------------------------------

With below changes , Same repro steps completed successfully. 


{noformat}
ggangadharan@Workbench hive % git diff 
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/serde/objectinspector/IcebergTimestampObjectInspectorHive3.java
diff --git 
a/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/serde/objectinspector/IcebergTimestampObjectInspectorHive3.java
 
b/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/serde/objectinspector/IcebergTimestampObjectInspectorHive3.java
index 86ecc929a5..4a2d2ed44c 100644
--- 
a/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/serde/objectinspector/IcebergTimestampObjectInspectorHive3.java
+++ 
b/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/serde/objectinspector/IcebergTimestampObjectInspectorHive3.java
@@ -20,6 +20,7 @@
 package org.apache.iceberg.mr.hive.serde.objectinspector; import 
java.time.LocalDateTime;
+import java.time.OffsetDateTime;
 import java.time.ZoneOffset;
 import org.apache.hadoop.hive.common.type.Timestamp;
 import org.apache.hadoop.hive.serde2.io.TimestampWritableV2;
@@ -55,7 +56,13 @@ public Timestamp getPrimitiveJavaObject(Object o) {
     if (o == null) {
       return null;
     }
-    LocalDateTime time = (LocalDateTime) o;
+    LocalDateTime time;
+    if (o instanceof OffsetDateTime) {
+      OffsetDateTime offsetDateTime = (OffsetDateTime) o;
+      time = offsetDateTime.toLocalDateTime();
+    } else {
+      time = (LocalDateTime) o;
+    }
     return 
Timestamp.ofEpochMilli(time.toInstant(ZoneOffset.UTC).toEpochMilli(), 
time.getNano());
   }ggangadharan@Workbench hive %
{noformat}

If there's no objections , i would like to work on this ticket. 



> Hive in-place migration to iceberg fails when there is a timestamp column
> -------------------------------------------------------------------------
>
>                 Key: HIVE-28518
>                 URL: https://issues.apache.org/jira/browse/HIVE-28518
>             Project: Hive
>          Issue Type: Bug
>            Reporter: sachin
>            Priority: Major
>
> Hive in-place migration to iceberg fails when there is a timestamp column
> Below are the steps to reproduce the issue.
> {noformat}
> CREATE EXTERNAL TABLE test(`id` int,`name` string,`dt` timestamp)STORED AS 
> PARQUET;
> insert into test values (1, "test name" , cast('2024-08-09 14:08:26.326107' 
> as timestamp));
> select * from test;
> ALTER TABLE test SET TBLPROPERTIES 
> ('storage_handler'='org.apache.iceberg.mr.hive.HiveIcebergStorageHandler', 
> 'format-version' = '2');
> select * from test;
> {noformat}
> Stack Trace - 
> {noformat}
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: 
> java.lang.ClassCastException: java.time.OffsetDateTime cannot be cast to 
> java.time.LocalDateTime
>       at 
> org.apache.hadoop.hive.ql.exec.ListSinkOperator.process(ListSinkOperator.java:98)
>       at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:888)
>       at 
> org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:94)
>       at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:888)
>       at 
> org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:173)
>       at 
> org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:545)
>       at 
> org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:537)
>       at 
> org.apache.hadoop.hive.ql.exec.FetchTask.executeInner(FetchTask.java:194)
>       ... 55 more
> Caused by: java.lang.ClassCastException: java.time.OffsetDateTime cannot be 
> cast to java.time.LocalDateTime
>       at 
> org.apache.iceberg.mr.hive.serde.objectinspector.IcebergTimestampObjectInspectorHive3.getPrimitiveJavaObject(IcebergTimestampObjectInspectorHive3.java:58)
>       at 
> org.apache.iceberg.mr.hive.serde.objectinspector.IcebergTimestampObjectInspectorHive3.getPrimitiveWritableObject(IcebergTimestampObjectInspectorHive3.java:64)
>       at 
> org.apache.hadoop.hive.serde2.lazy.LazyUtils.writePrimitiveUTF8(LazyUtils.java:308)
>       at 
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serialize(LazySimpleSerDe.java:308)
>       at 
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serializeField(LazySimpleSerDe.java:263)
>       at 
> org.apache.hadoop.hive.serde2.DelimitedJSONSerDe.serializeField(DelimitedJSONSerDe.java:72)
>       at 
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.doSerialize(LazySimpleSerDe.java:247)
>       at 
> org.apache.hadoop.hive.serde2.AbstractEncodingAwareSerDe.serialize(AbstractEncodingAwareSerDe.java:53)
>       at 
> org.apache.hadoop.hive.serde2.DefaultFetchFormatter.convert(DefaultFetchFormatter.java:67)
>       at 
> org.apache.hadoop.hive.serde2.DefaultFetchFormatter.convert(DefaultFetchFormatter.java:36)
>       at 
> org.apache.hadoop.hive.ql.exec.ListSinkOperator.process(ListSinkOperator.java:94)
>       ... 62 more{noformat}



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