[jira] [Created] (PARQUET-333) [Vectorizaed Reader] Add attributes in ColumnVector and RowBatch

["Dong Chen (JIRA)" <ji...@apache.org>]

Dong Chen created PARQUET-333:
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             Summary: [Vectorizaed Reader] Add attributes in ColumnVector and RowBatch
                 Key: PARQUET-333
                 URL: https://issues.apache.org/jira/browse/PARQUET-333
             Project: Parquet
          Issue Type: Sub-task
            Reporter: Dong Chen


As discussed in HIVE-8128, we want to add some attributes in vector.

* In {{ColumnVector}}, add two attributes: one is {{boolean noNulls}}, which indicates whether the whole column vector has no null value. The other is {{boolean isRepeating}}, which indicates whether the same value repeats for whole column vector. They could be calculated at the same time when we read a vector. SQL engines (like Hive) can check these attribute to skip some values. 
* In {{RowBatch}}, add one attribute {{int size}}, which indicates the number of rows in this batch. This is just for easy usage. Its value should be the same as {{RowBatch.columns\[0\].numValues}}.



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