when i use the code to produce parquet file and upload to Impala cause WARNINGS:
select * from event_test limit 1;
Query data appears：
WARNINGS: File 'hdfs://nameservice01/test/event_test/17730/0/part.parquet' column 'event_id' contains decimal data but the table metadata has type INT (1 of 113 similar);
my code:
type Student struct {
EventId int32 parquet:"name=event_id, type=INT32"
}
use parquet-tools look schema part.parquet:
message parquet_go_root {
required int32 event_id = 0;
}
Why is it here = 0;
when i use the code to produce parquet file and upload to Impala cause WARNINGS:
select * from event_test limit 1; Query data appears： WARNINGS: File 'hdfs://nameservice01/test/event_test/17730/0/part.parquet' column 'event_id' contains decimal data but the table metadata has type INT (1 of 113 similar);
my code: type Student struct { EventId int32
parquet:"name=event_id, type=INT32"}use parquet-tools look schema part.parquet: message parquet_go_root { required int32 event_id = 0; } Why is it here = 0;