org.apache.flink.api.common.io.InputFormat Java Examples

@Test
public void testTypeExtraction() {
	try {
		InputFormat<MyAvroType, ?> format = new AvroInputFormat<MyAvroType>(new Path("file:///ignore/this/file"), MyAvroType.class);

		TypeInformation<?> typeInfoDirect = TypeExtractor.getInputFormatTypes(format);

		ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
		DataSet<MyAvroType> input = env.createInput(format);
		TypeInformation<?> typeInfoDataSet = input.getType();

		Assert.assertTrue(typeInfoDirect instanceof PojoTypeInfo);
		Assert.assertTrue(typeInfoDataSet instanceof PojoTypeInfo);

		Assert.assertEquals(MyAvroType.class, typeInfoDirect.getTypeClass());
		Assert.assertEquals(MyAvroType.class, typeInfoDataSet.getTypeClass());
	} catch (Exception e) {
		e.printStackTrace();
		Assert.fail(e.getMessage());
	}
}
 

@Test
public void testOnlyInputFormat() {
	InputOutputFormatContainer formatContainer = new InputOutputFormatContainer(Thread.currentThread().getContextClassLoader());

	OperatorID operatorID = new OperatorID();
	formatContainer.addInputFormat(operatorID, new TestInputFormat("test input format"));
	formatContainer.addParameters(operatorID, "parameter1", "abc123");

	TaskConfig taskConfig = new TaskConfig(new Configuration());
	formatContainer.write(taskConfig);

	InputOutputFormatContainer loadedFormatContainer = new InputOutputFormatContainer(taskConfig, getClass().getClassLoader());

	Map<OperatorID, UserCodeWrapper<? extends InputFormat<?, ?>>> inputFormats = loadedFormatContainer.getInputFormats();
	assertEquals(1, inputFormats.size());
	assertEquals(0, loadedFormatContainer.getOutputFormats().size());

	TestInputFormat inputFormat = (TestInputFormat) inputFormats.get(operatorID).getUserCodeObject();
	assertEquals("test input format", inputFormat.getName());

	Configuration parameters = loadedFormatContainer.getParameters(operatorID);
	assertEquals(1, parameters.keySet().size());
	assertEquals("abc123", parameters.getString("parameter1", null));
}
 

@Test
public void testMultiLevelDerivedInputFormatType() {
	try {

		// composite type
		{
			InputFormat<?, ?> format = new FinalRelativeInputFormat();
			TypeInformation<?> typeInfo = TypeExtractor.getInputFormatTypes(format);
			
			assertTrue(typeInfo.isTupleType());
			assertTrue(typeInfo instanceof TupleTypeInfo);
			
			@SuppressWarnings("unchecked")
			TupleTypeInfo<Tuple3<String, Integer, Double>> tupleInfo = (TupleTypeInfo<Tuple3<String, Integer, Double>>) typeInfo;
			
			assertEquals(3, tupleInfo.getArity());
			assertEquals(BasicTypeInfo.STRING_TYPE_INFO, tupleInfo.getTypeAt(0));
			assertEquals(BasicTypeInfo.INT_TYPE_INFO, tupleInfo.getTypeAt(1));
			assertEquals(BasicTypeInfo.DOUBLE_TYPE_INFO, tupleInfo.getTypeAt(2));
		}
	}
	catch (Exception e) {
		e.printStackTrace();
		fail(e.getMessage());
	}
}
 

@Test
public void testTypeExtraction() {
	try {
		InputFormat<MyAvroType, ?> format = new AvroInputFormat<MyAvroType>(new Path("file:///ignore/this/file"), MyAvroType.class);

		TypeInformation<?> typeInfoDirect = TypeExtractor.getInputFormatTypes(format);

		ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
		DataSet<MyAvroType> input = env.createInput(format);
		TypeInformation<?> typeInfoDataSet = input.getType();

		Assert.assertTrue(typeInfoDirect instanceof PojoTypeInfo);
		Assert.assertTrue(typeInfoDataSet instanceof PojoTypeInfo);

		Assert.assertEquals(MyAvroType.class, typeInfoDirect.getTypeClass());
		Assert.assertEquals(MyAvroType.class, typeInfoDataSet.getTypeClass());
	} catch (Exception e) {
		e.printStackTrace();
		Assert.fail(e.getMessage());
	}
}
 

private JobVertex createDataSourceVertex(SourcePlanNode node) throws CompilerException {
	final InputOutputFormatVertex vertex = new InputOutputFormatVertex(node.getNodeName());
	final TaskConfig config = new TaskConfig(vertex.getConfiguration());

	final OperatorID operatorID = new OperatorID();

	vertex.setResources(node.getMinResources(), node.getPreferredResources());
	vertex.setInvokableClass(DataSourceTask.class);
	vertex.setFormatDescription(operatorID, getDescriptionForUserCode(node.getProgramOperator().getUserCodeWrapper()));

	// set user code
	new InputOutputFormatContainer(Thread.currentThread().getContextClassLoader())
		.addInputFormat(operatorID, (UserCodeWrapper<? extends InputFormat<?, ?>>) node.getProgramOperator().getUserCodeWrapper())
		.addParameters(operatorID, node.getProgramOperator().getParameters())
		.write(config);

	config.setOutputSerializer(node.getSerializer());
	return vertex;
}
 

/**
 * Creates a new data source.
 *
 * @param context The environment in which the data source gets executed.
 * @param inputFormat The input format that the data source executes.
 * @param type The type of the elements produced by this input format.
 */
public DataSource(ExecutionEnvironment context, InputFormat<OUT, ?> inputFormat, TypeInformation<OUT> type, String dataSourceLocationName) {
	super(context, type);

	this.dataSourceLocationName = dataSourceLocationName;

	if (inputFormat == null) {
		throw new IllegalArgumentException("The input format may not be null.");
	}

	this.inputFormat = inputFormat;

	if (inputFormat instanceof NonParallelInput) {
		this.parallelism = 1;
	}
}
 

private JobVertex createDataSourceVertex(SourcePlanNode node) throws CompilerException {
	final InputOutputFormatVertex vertex = new InputOutputFormatVertex(node.getNodeName());
	final TaskConfig config = new TaskConfig(vertex.getConfiguration());

	final OperatorID operatorID = new OperatorID();

	vertex.setResources(node.getMinResources(), node.getPreferredResources());
	vertex.setInvokableClass(DataSourceTask.class);
	vertex.setFormatDescription(operatorID, getDescriptionForUserCode(node.getProgramOperator().getUserCodeWrapper()));

	// set user code
	new InputOutputFormatContainer(Thread.currentThread().getContextClassLoader())
		.addInputFormat(operatorID, (UserCodeWrapper<? extends InputFormat<?, ?>>) node.getProgramOperator().getUserCodeWrapper())
		.addParameters(operatorID, node.getProgramOperator().getParameters())
		.write(config);

	config.setOutputSerializer(node.getSerializer());
	return vertex;
}
 

@Test
public void testTypeExtraction() {
	try {
		InputFormat<MyAvroType, ?> format = new AvroInputFormat<MyAvroType>(new Path("file:///ignore/this/file"), MyAvroType.class);

		TypeInformation<?> typeInfoDirect = TypeExtractor.getInputFormatTypes(format);

		ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
		DataSet<MyAvroType> input = env.createInput(format);
		TypeInformation<?> typeInfoDataSet = input.getType();

		Assert.assertTrue(typeInfoDirect instanceof PojoTypeInfo);
		Assert.assertTrue(typeInfoDataSet instanceof PojoTypeInfo);

		Assert.assertEquals(MyAvroType.class, typeInfoDirect.getTypeClass());
		Assert.assertEquals(MyAvroType.class, typeInfoDataSet.getTypeClass());
	} catch (Exception e) {
		e.printStackTrace();
		Assert.fail(e.getMessage());
	}
}
 

@Test
public void testMultiLevelDerivedInputFormatType() {
	try {

		// composite type
		{
			InputFormat<?, ?> format = new FinalRelativeInputFormat();
			TypeInformation<?> typeInfo = TypeExtractor.getInputFormatTypes(format);
			
			assertTrue(typeInfo.isTupleType());
			assertTrue(typeInfo instanceof TupleTypeInfo);
			
			@SuppressWarnings("unchecked")
			TupleTypeInfo<Tuple3<String, Integer, Double>> tupleInfo = (TupleTypeInfo<Tuple3<String, Integer, Double>>) typeInfo;
			
			assertEquals(3, tupleInfo.getArity());
			assertEquals(BasicTypeInfo.STRING_TYPE_INFO, tupleInfo.getTypeAt(0));
			assertEquals(BasicTypeInfo.INT_TYPE_INFO, tupleInfo.getTypeAt(1));
			assertEquals(BasicTypeInfo.DOUBLE_TYPE_INFO, tupleInfo.getTypeAt(2));
		}
	}
	catch (Exception e) {
		e.printStackTrace();
		fail(e.getMessage());
	}
}
 

/**
 * Creates a new data source.
 *
 * @param context The environment in which the data source gets executed.
 * @param inputFormat The input format that the data source executes.
 * @param type The type of the elements produced by this input format.
 */
public DataSource(ExecutionEnvironment context, InputFormat<OUT, ?> inputFormat, TypeInformation<OUT> type, String dataSourceLocationName) {
	super(context, type);

	this.dataSourceLocationName = dataSourceLocationName;

	if (inputFormat == null) {
		throw new IllegalArgumentException("The input format may not be null.");
	}

	this.inputFormat = inputFormat;

	if (inputFormat instanceof NonParallelInput) {
		this.parallelism = 1;
	}
}
 

private <OUT> DataStreamSource<OUT> createInput(InputFormat<OUT, ?> inputFormat,
												TypeInformation<OUT> typeInfo,
												String sourceName) {

	InputFormatSourceFunction<OUT> function = new InputFormatSourceFunction<>(inputFormat, typeInfo);
	return addSource(function, sourceName, typeInfo);
}
 

protected List<OUT> executeOnCollections(RuntimeContext ctx, ExecutionConfig executionConfig) throws Exception {
	@SuppressWarnings("unchecked")
	InputFormat<OUT, InputSplit> inputFormat = (InputFormat<OUT, InputSplit>) this.formatWrapper.getUserCodeObject();
	//configure the input format
	inputFormat.configure(this.parameters);

	//open the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).setRuntimeContext(ctx);
		((RichInputFormat) inputFormat).openInputFormat();
	}

	List<OUT> result = new ArrayList<OUT>();
	
	// splits
	InputSplit[] splits = inputFormat.createInputSplits(1);
	TypeSerializer<OUT> serializer = getOperatorInfo().getOutputType().createSerializer(executionConfig);
	
	for (InputSplit split : splits) {
		inputFormat.open(split);
		
		while (!inputFormat.reachedEnd()) {
			OUT next = inputFormat.nextRecord(serializer.createInstance());
			if (next != null) {
				result.add(serializer.copy(next));
			}
		}
		
		inputFormat.close();
	}
	
	//close the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).closeInputFormat();
	}

	return result;
}
 

/**
 * Helper method for creating a static provider.
 */
static InputFormatProvider of(InputFormat<RowData, ?> inputFormat) {
	return new InputFormatProvider() {
		@Override
		public InputFormat<RowData, ?> createInputFormat() {
			return inputFormat;
		}

		@Override
		public boolean isBounded() {
			return true;
		}
	};
}
 

@SuppressWarnings("unchecked")
@PublicEvolving
public static <IN> TypeInformation<IN> getInputFormatTypes(InputFormat<IN, ?> inputFormatInterface) {
	if (inputFormatInterface instanceof ResultTypeQueryable) {
		return ((ResultTypeQueryable<IN>) inputFormatInterface).getProducedType();
	}
	return new TypeExtractor().privateCreateTypeInfo(InputFormat.class, inputFormatInterface.getClass(), 0, null, null);
}
 

@SuppressWarnings("unchecked")
@PublicEvolving
public static <IN> TypeInformation<IN> getInputFormatTypes(InputFormat<IN, ?> inputFormatInterface) {
	if (inputFormatInterface instanceof ResultTypeQueryable) {
		return ((ResultTypeQueryable<IN>) inputFormatInterface).getProducedType();
	}
	return new TypeExtractor().privateCreateTypeInfo(InputFormat.class, inputFormatInterface.getClass(), 0, null, null);
}
 

protected List<OUT> executeOnCollections(RuntimeContext ctx, ExecutionConfig executionConfig) throws Exception {
	@SuppressWarnings("unchecked")
	InputFormat<OUT, InputSplit> inputFormat = (InputFormat<OUT, InputSplit>) this.formatWrapper.getUserCodeObject();
	//configure the input format
	inputFormat.configure(this.parameters);

	//open the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).setRuntimeContext(ctx);
		((RichInputFormat) inputFormat).openInputFormat();
	}

	List<OUT> result = new ArrayList<OUT>();
	
	// splits
	InputSplit[] splits = inputFormat.createInputSplits(1);
	TypeSerializer<OUT> serializer = getOperatorInfo().getOutputType().createSerializer(executionConfig);
	
	for (InputSplit split : splits) {
		inputFormat.open(split);
		
		while (!inputFormat.reachedEnd()) {
			OUT next = inputFormat.nextRecord(serializer.createInstance());
			if (next != null) {
				result.add(serializer.copy(next));
			}
		}
		
		inputFormat.close();
	}
	
	//close the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).closeInputFormat();
	}

	return result;
}
 

@Test
public void testQueryableFormatType() {
	try {
		InputFormat<?, ?> format = new QueryableInputFormat();
		TypeInformation<?> typeInfo = TypeExtractor.getInputFormatTypes(format);
		assertEquals(BasicTypeInfo.DOUBLE_TYPE_INFO, typeInfo);
	}
	catch (Exception e) {
		e.printStackTrace();
		fail(e.getMessage());
	}
}
 

@Override
public InputFormat<RowData, ?> createReader(ReaderContext context) {
	return new ParquetInputFormat(
			context.getPaths(),
			context.getSchema().getFieldNames(),
			context.getSchema().getFieldDataTypes(),
			context.getProjectFields(),
			context.getDefaultPartName(),
			context.getPushedDownLimit(),
			getParquetConfiguration(context.getFormatOptions()),
			context.getFormatOptions().get(UTC_TIMEZONE));
}
 

@Override
public InputFormat<RowData, ?> createReader(ReaderContext context) {
	ReadableConfig options = context.getFormatOptions();
	validateFormatOptions(options);

	RowType formatRowType = context.getFormatRowType();

	String[] fieldNames = context.getSchema().getFieldNames();
	List<String> projectFields = Arrays.stream(context.getProjectFields())
		.mapToObj(idx -> fieldNames[idx])
		.collect(Collectors.toList());
	List<String> csvFields = Arrays.stream(fieldNames)
		.filter(field -> !context.getPartitionKeys().contains(field))
		.collect(Collectors.toList());

	int[] csvSelectFieldToProjectFieldMapping = context.getFormatProjectFields().stream()
		.mapToInt(projectFields::indexOf)
		.toArray();
	int[] csvSelectFieldToCsvFieldMapping = context.getFormatProjectFields().stream()
		.mapToInt(csvFields::indexOf)
		.toArray();

	CsvSchema csvSchema = buildCsvSchema(formatRowType, options);

	boolean ignoreParseErrors = options.get(IGNORE_PARSE_ERRORS);

	return new CsvInputFormat(
		context.getPaths(),
		context.getSchema().getFieldDataTypes(),
		context.getSchema().getFieldNames(),
		csvSchema,
		formatRowType,
		context.getProjectFields(),
		context.getPartitionKeys(),
		context.getDefaultPartName(),
		context.getPushedDownLimit(),
		csvSelectFieldToProjectFieldMapping,
		csvSelectFieldToCsvFieldMapping,
		ignoreParseErrors);
}
 

@Override
public InputFormat<RowData, ?> createReader(ReaderContext context) {
	return new TestRowDataCsvInputFormat(
			context.getPaths(),
			context.getSchema(),
			context.getPartitionKeys(),
			context.getDefaultPartName(),
			context.getProjectFields(),
			context.getPushedDownLimit());
}
 

@Override
public InputFormat getInputFormat() {
	if (!initAllPartitions) {
		initAllPartitions();
	}
	return new HiveTableInputFormat(jobConf, catalogTable, allHivePartitions);
}
 

public void addInputFormat(OperatorID operatorId, UserCodeWrapper<? extends InputFormat<?, ?>> wrapper) {
	if (inputFormats.containsKey(checkNotNull(operatorId))) {
		throw new IllegalStateException("The input format has been set for the operator: " + operatorId);
	}

	inputFormats.put(operatorId, checkNotNull(wrapper));
}
 

@Test
public void testFieldsProjection() throws Exception {
	ParquetTableSource parquetTableSource = createNestedTestParquetTableSource(testPath);
	ParquetTableSource projected = (ParquetTableSource) parquetTableSource.projectFields(new int[] {2, 4, 6});

	// ensure a new reference is returned
	assertNotSame(projected, parquetTableSource);

	// ensure table schema is the same
	assertEquals(parquetTableSource.getTableSchema(), projected.getTableSchema());

	// ensure that table source description differs
	assertNotEquals(parquetTableSource.explainSource(), projected.explainSource());

	String[] fieldNames = ((RowTypeInfo) NESTED_ROW_TYPE).getFieldNames();
	TypeInformation[] fieldTypes =  ((RowTypeInfo) NESTED_ROW_TYPE).getFieldTypes();
	assertEquals(
		Types.ROW_NAMED(
			new String[] {fieldNames[2], fieldNames[4], fieldNames[6]},
			fieldTypes[2], fieldTypes[4], fieldTypes[6]
		),
		projected.getReturnType()
	);

	// ensure ParquetInputFormat is configured with selected fields
	DataSet<Row> data = projected.getDataSet(ExecutionEnvironment.createLocalEnvironment());
	InputFormat<Row, ?> inputFormat = ((DataSource<Row>) data).getInputFormat();
	assertTrue(inputFormat instanceof ParquetRowInputFormat);
	ParquetRowInputFormat parquetIF = (ParquetRowInputFormat) inputFormat;
	assertArrayEquals(new String[]{fieldNames[2], fieldNames[4], fieldNames[6]}, parquetIF.getFieldNames());
	assertArrayEquals(new TypeInformation<?>[]{fieldTypes[2], fieldTypes[4], fieldTypes[6]}, parquetIF.getFieldTypes());
}
 

@SuppressWarnings("unchecked")
public <OT, T extends InputSplit> Pair<OperatorID, InputFormat<OT, T>> getUniqueInputFormat() {
	Map<OperatorID, UserCodeWrapper<? extends InputFormat<?, ?>>> inputFormats = formats.getInputFormats();
	Preconditions.checkState(inputFormats.size() == 1);

	Map.Entry<OperatorID, UserCodeWrapper<? extends InputFormat<?, ?>>> entry = inputFormats.entrySet().iterator().next();

	return new ImmutablePair<>(entry.getKey(),
		(InputFormat<OT, T>) entry.getValue().getUserCodeObject(InputFormat.class, userCodeClassLoader));
}
 

@Test
public void testFieldsProjection() throws Exception {
	ParquetTableSource parquetTableSource = createNestedTestParquetTableSource(testPath);
	ParquetTableSource projected = (ParquetTableSource) parquetTableSource.projectFields(new int[] {2, 4, 6});

	// ensure a new reference is returned
	assertNotSame(projected, parquetTableSource);

	// ensure table schema is the same
	assertEquals(parquetTableSource.getTableSchema(), projected.getTableSchema());

	// ensure that table source description differs
	assertNotEquals(parquetTableSource.explainSource(), projected.explainSource());

	String[] fieldNames = ((RowTypeInfo) NESTED_ROW_TYPE).getFieldNames();
	TypeInformation[] fieldTypes =  ((RowTypeInfo) NESTED_ROW_TYPE).getFieldTypes();
	assertEquals(
		Types.ROW_NAMED(
			new String[] {fieldNames[2], fieldNames[4], fieldNames[6]},
			fieldTypes[2], fieldTypes[4], fieldTypes[6]
		),
		projected.getReturnType()
	);

	// ensure ParquetInputFormat is configured with selected fields
	DataSet<Row> data = projected.getDataSet(ExecutionEnvironment.createLocalEnvironment());
	InputFormat<Row, ?> inputFormat = ((DataSource<Row>) data).getInputFormat();
	assertTrue(inputFormat instanceof ParquetRowInputFormat);
	ParquetRowInputFormat parquetIF = (ParquetRowInputFormat) inputFormat;
	assertArrayEquals(new String[]{fieldNames[2], fieldNames[4], fieldNames[6]}, parquetIF.getFieldNames());
	assertArrayEquals(new TypeInformation<?>[]{fieldTypes[2], fieldTypes[4], fieldTypes[6]}, parquetIF.getFieldTypes());
}
 

protected List<OUT> executeOnCollections(RuntimeContext ctx, ExecutionConfig executionConfig) throws Exception {
	@SuppressWarnings("unchecked")
	InputFormat<OUT, InputSplit> inputFormat = (InputFormat<OUT, InputSplit>) this.formatWrapper.getUserCodeObject();
	//configure the input format
	inputFormat.configure(this.parameters);

	//open the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).setRuntimeContext(ctx);
		((RichInputFormat) inputFormat).openInputFormat();
	}

	List<OUT> result = new ArrayList<OUT>();
	
	// splits
	InputSplit[] splits = inputFormat.createInputSplits(1);
	TypeSerializer<OUT> serializer = getOperatorInfo().getOutputType().createSerializer(executionConfig);
	
	for (InputSplit split : splits) {
		inputFormat.open(split);
		
		while (!inputFormat.reachedEnd()) {
			OUT next = inputFormat.nextRecord(serializer.createInstance());
			if (next != null) {
				result.add(serializer.copy(next));
			}
		}
		
		inputFormat.close();
	}
	
	//close the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).closeInputFormat();
	}

	return result;
}
 

@SuppressWarnings("unchecked")
@PublicEvolving
public static <IN> TypeInformation<IN> getInputFormatTypes(InputFormat<IN, ?> inputFormatInterface) {
	if (inputFormatInterface instanceof ResultTypeQueryable) {
		return ((ResultTypeQueryable<IN>) inputFormatInterface).getProducedType();
	}
	return new TypeExtractor().privateCreateTypeInfo(InputFormat.class, inputFormatInterface.getClass(), 0, null, null);
}
 

@Test
@SuppressWarnings("unchecked")
public void testProjectFields() throws Exception {

	OrcTableSource orc = OrcTableSource.builder()
		.path(getPath(TEST_FILE_NESTED))
		.forOrcSchema(TEST_SCHEMA_NESTED)
		.build();

	OrcTableSource projected = (OrcTableSource) orc.projectFields(new int[]{3, 5, 1, 0});

	// ensure copy is returned
	assertTrue(orc != projected);

	// ensure table schema is identical
	assertEquals(orc.getTableSchema(), projected.getTableSchema());

	// ensure return type was adapted
	String[] fieldNames = getNestedFieldNames();
	TypeInformation[] fieldTypes = getNestedFieldTypes();
	assertEquals(
		Types.ROW_NAMED(
			new String[] {fieldNames[3], fieldNames[5], fieldNames[1], fieldNames[0]},
			new TypeInformation[] {fieldTypes[3], fieldTypes[5], fieldTypes[1], fieldTypes[0]}),
		projected.getReturnType());

	// ensure IF is configured with selected fields
	OrcTableSource spyTS = spy(projected);
	OrcRowInputFormat mockIF = mock(OrcRowInputFormat.class);
	doReturn(mockIF).when(spyTS).buildOrcInputFormat();
	ExecutionEnvironment env = mock(ExecutionEnvironment.class);
	when(env.createInput(any(InputFormat.class))).thenReturn(mock(DataSource.class));
	spyTS.getDataSet(env);
	verify(mockIF).selectFields(eq(3), eq(5), eq(1), eq(0));
}
 

public Map<OperatorID, UserCodeWrapper<? extends InputFormat<?, ?>>> getInputFormats() {
	return formats.getInputFormats();
}
 

@SuppressWarnings("unchecked")
public InputFormatSourceFunction(InputFormat<OUT, ?> format, TypeInformation<OUT> typeInfo) {
	this.format = (InputFormat<OUT, InputSplit>) format;
	this.typeInfo = typeInfo;
}