zzzzming95 opened a new issue, #9784:
URL: https://github.com/apache/iceberg/issues/9784
### Apache Iceberg version
None
### Query engine
None
### Please describe the bug 🐞
```
spark.sql("CREATE EXTERNAL TABLE mytable (foo timestamp) STORED AS orc
LOCATION '/Users/russellspitzer/Temp/foo'")
spark.sql("INSERT INTO mytable VALUES (now())")
spark.sql("CALL spark_catalog.system.migrate('test_timestamp')")
spark.sql("SELECT * FROM mytable")
```
i see the old issue : https://github.com/apache/iceberg/issues/2245
but when i using spark 3.4 and `iceberg-spark-runtime-3.4_2.12-1.4.3.jar` ,
i still get errors.
```
Caused by: java.lang.IllegalArgumentException: Can not promote TIMESTAMP
type to TIMESTAMP
at
org.apache.iceberg.relocated.com.google.common.base.Preconditions.checkArgument(Preconditions.java:445)
at
org.apache.iceberg.orc.ORCSchemaUtil.buildOrcProjection(ORCSchemaUtil.java:319)
at
org.apache.iceberg.orc.ORCSchemaUtil.buildOrcProjection(ORCSchemaUtil.java:284)
at
org.apache.iceberg.orc.ORCSchemaUtil.buildOrcProjection(ORCSchemaUtil.java:265)
```
I think this is because hive and spark treat `timestamp` data type as
timestamp with time zone and the orc file format is also stored as orc
`timestamp` type. But in fact the hive `timestamp` data type should be stored
as `timestamp_instant` in the orc file.
Iceberg strictly follows the data type specification of orc, that is, orc
`timestamp` is regarded as timestamp without time zone, and orc
`timestamp_instant` is regarded as timestamp with time zone. This causes
exceptions to occur.
Please ask the community if there is a solution to this problem? thanks~
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