com.aliyun.odps.table.read

Interface SplitReader<T>

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

SplitArrowReaderImpl, SplitRecordReaderImpl

public interface SplitReader<T>
extends Closeable

A split reader returned by TableBatchReadSession.createRecordReader(InputSplit, ReaderOptions) or TableBatchReadSession.createArrowReader(InputSplit, ReaderOptions) It's responsible for outputting data for an input split.

Method Summary

Modifier and Type	Method and Description
default Metrics	currentMetricsValues() Returns metrics for this reader
T	get() Return the current record.
boolean	hasNext() Proceed to next record, returns false if there is no more records.

Methods inherited from interface java.io.Closeable

close

Method Detail

hasNext

boolean hasNext()
         throws IOException

Proceed to next record, returns false if there is no more records.

Throws:

IOException - if failure happens during network IO.

get

T get()

Return the current record. This method should return same value until `hasNext` is called.

currentMetricsValues

default Metrics currentMetricsValues()

Returns metrics for this reader