VectorizedReader

All Known Implementing Classes:

BaseBatchReader, ColumnarBatchReader, VectorizedArrowReader, VectorizedArrowReader.ConstantVectorReader, VectorizedArrowReader.DeletedVectorReader
```
public interface VectorizedReader<T>
```
Interface for vectorized Iceberg readers.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`close()`	Release any resources allocated.
`T`	`read(T reuse, int numRows)`	Reads a batch of type @param <T> and of size numRows
`void`	`setBatchSize(int batchSize)`
`void`	`setRowGroupInfo(org.apache.parquet.column.page.PageReadStore pages, java.util.Map<org.apache.parquet.hadoop.metadata.ColumnPath,org.apache.parquet.hadoop.metadata.ColumnChunkMetaData> metadata, long rowPosition)`	Sets the row group information to be used with this reader

- Method Detail
  - read
```
T read(T reuse,
       int numRows)
```
    Reads a batch of type @param <T> and of size numRows
    
    Parameters:
    
    reuse - container for the last batch to be reused for next batch
    
    numRows - number of rows to read
    
    Returns:
    
    batch of records of type @param <T>
  - setBatchSize
```
void setBatchSize(int batchSize)
```
  - setRowGroupInfo
```
void setRowGroupInfo(org.apache.parquet.column.page.PageReadStore pages,
                     java.util.Map<org.apache.parquet.hadoop.metadata.ColumnPath,org.apache.parquet.hadoop.metadata.ColumnChunkMetaData> metadata,
                     long rowPosition)
```
    Sets the row group information to be used with this reader
    
    Parameters:
    
    pages - row group information for all the columns
    
    metadata - map of ColumnPath -> ColumnChunkMetaData for the row group
    
    rowPosition - the row group's row offset in the parquet file
  - close
```
void close()
```
    Release any resources allocated.