Tongjie Chen created HIVE-6784:
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Summary: parquet-hive should allow column type change
Key: HIVE-6784
URL: https://issues.apache.org/jira/browse/HIVE-6784
Project: Hive
Issue Type: Bug
Components: File Formats, Serializers/Deserializers
Affects Versions: 0.13.0
Reporter: Tongjie Chen
see also in the following parquet issue:
https://github.com/Parquet/parquet-mr/issues/323
Currently, if we change parquet format hive table using "alter table
parquet_table change c1 c1 bigint " ( assuming original type of c1 is int), it
will result in exception thrown from SerDe: "org.apache.hadoop.io.IntWritable
cannot be cast to org.apache.hadoop.io.LongWritable" in query runtime.
This is different behavior from hive (using other file format), where it will
try to perform cast (null value in case of incompatible type).
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