John Sherman created HIVE-26398:
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Summary: INSERT INTO complex type with varchar/char field fails CBO
Key: HIVE-26398
URL: https://issues.apache.org/jira/browse/HIVE-26398
Project: Hive
Issue Type: Bug
Components: HiveServer2
Affects Versions: 4.0.0
Reporter: John Sherman
Assignee: John Sherman
{code}
CREATE EXTERNAL TABLE test_complex_struct(struct_type struct<string_type :
STRING, varchar_type : VARCHAR(100), char_type : CHAR(34)>) STORED AS PARQUET;
INSERT INTO test_complex_struct SELECT named_struct("string_type", 'str1',
"varchar_type", cast('varchar1' as varchar(100)), "char_type", cast('char' as
char(34)));
{code}
fails with
{code}
org.apache.hadoop.hive.ql.parse.SemanticException: Line 2:12 Cannot insert
into target table because column number/types are different
'test_complex_struct': Cannot convert column 0 from
struct<string_type:string,varchar_type:string,char_type:string> to
struct<string_type:string,varchar_type:varchar(100),char_type:char(34)>.{code}
This also fails with maps:
{code}
CREATE EXTERNAL TABLE test_complex_map(t_map map<varchar(100), char(10)>)
STORED AS PARQUET;
INSERT INTO test_complex_map SELECT map(cast("test" as varchar(100)),
cast("value" as char(10)));
{code}
It seems that the cast is being lost or ignored somewhere along the way (and it
stays a string).
The queries do complete when ran on the non-CBO path. (Disabling CBO or falling
back)
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