[HIVE-6575] select * fails on parquet table with map datatype

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.13.0
• Fix Version/s: 0.13.0
• Component/s: Serializers/Deserializers
• Labels: parquet
• Assignee: Szehon Ho
• Reporter: Szehon Ho
• Created: 07/Mar/14 01:23
• Updated: 31/Mar/14 21:29
• Resolved: 12/Mar/14 17:48

Description

Create parquet table with map and run select * from parquet_table, returns following exception:

 FAILED: RuntimeException java.lang.ClassCastException: org.apache.hadoop.hive.ql.io.parquet.serde.DeepParquetHiveMapInspector cannot be cast to org.apache.hadoop.hive.ql.io.parquet.serde.StandardParquetHiveMapInspector

However select <mapcol> from parquet_table seems to work, and thus joins will work.

Issue Links

• incorporates: HIVE-6634 Add test case for HIVE-6575
• is duplicated by: HIVE-6491 ClassCastException in AbstractParquetMapInspector
• is duplicated by: HIVE-6794 select * from parquet hive table containing map columns runs into exception
• links to: Review board