Dong Chen created HIVE-10031:
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Summary: Modify the using of jobConf variable in
ParquetRecordReaderWrapper constructor
Key: HIVE-10031
URL: https://issues.apache.org/jira/browse/HIVE-10031
Project: Hive
Issue Type: Sub-task
Reporter: Dong Chen
Assignee: Dong Chen
In {{ParquetRecordReaderWrapper}} constructor, it create splits, set
projections and filters in conf, create task context, and then create Parquet
record reader. In this procedure, we could improve the logic of conf usage:
1. the clone of jobConf is not necessary. This could speed up getRecordReader a
little.
2. the updated jobConf is not passed to Parquet in one case.
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