Package org.apache.drill.exec.physical.impl.metadata

Class MetadataHandlerBatch

java.lang.Object

org.apache.drill.exec.record.AbstractRecordBatch<MetadataHandlerPOP>

org.apache.drill.exec.record.AbstractUnaryRecordBatch<MetadataHandlerPOP>

org.apache.drill.exec.record.AbstractSingleRecordBatch<MetadataHandlerPOP>

org.apache.drill.exec.physical.impl.metadata.MetadataHandlerBatch

All Implemented Interfaces:

AutoCloseable, Iterable<VectorWrapper<?>>, CloseableRecordBatch, RecordBatch, VectorAccessible

public class MetadataHandlerBatch
extends AbstractSingleRecordBatch<MetadataHandlerPOP>

Responsible for handling metadata returned by incoming aggregate operators and fetching required metadata form the Metastore.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.drill.exec.record.AbstractRecordBatch

AbstractRecordBatch.BatchState

Nested classes/interfaces inherited from interface org.apache.drill.exec.record.RecordBatch

RecordBatch.IterOutcome

Field Summary

Fields inherited from class org.apache.drill.exec.record.AbstractSingleRecordBatch

incoming

Fields inherited from class org.apache.drill.exec.record.AbstractUnaryRecordBatch

callBack

Fields inherited from class org.apache.drill.exec.record.AbstractRecordBatch

batchStatsContext, container, context, oContext, popConfig, state, stats, unionTypeEnabled

Fields inherited from interface org.apache.drill.exec.record.RecordBatch

MAX_BATCH_ROW_COUNT

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MetadataHandlerBatch(MetadataHandlerPOP popConfig, FragmentContext context, RecordBatch incoming)

Method Summary

Modifier and Type	Method	Description
RecordBatch.IterOutcome	doWork()
void	dump()	Perform dump of this batch's state to logs.
int	getRecordCount()	Get the number of records.
RecordBatch.IterOutcome	innerNext()
protected boolean	setupNewSchema()

Methods inherited from class org.apache.drill.exec.record.AbstractSingleRecordBatch

getFinalOutcome, getIncoming

Methods inherited from class org.apache.drill.exec.record.AbstractUnaryRecordBatch

cancelIncoming, getLastKnownOutcome, handleNullInput, setLastKnownOutcome

Methods inherited from class org.apache.drill.exec.record.AbstractRecordBatch

buildSchema, cancel, checkContinue, close, getContainer, getContext, getOutgoingContainer, getPopConfig, getRecordBatchStatsContext, getSchema, getSelectionVector2, getSelectionVector4, getValueAccessorById, getValueVectorId, getWritableBatch, isRecordBatchStatsLoggingEnabled, iterator, next, next, next, schemaChangeException, schemaChangeException

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

MetadataHandlerBatch

protected MetadataHandlerBatch(MetadataHandlerPOP popConfig,
 FragmentContext context,
 RecordBatch incoming)
                        throws OutOfMemoryException

Throws:

OutOfMemoryException

Method Details

doWork

public RecordBatch.IterOutcome doWork()

Specified by:

doWork in class AbstractUnaryRecordBatch<MetadataHandlerPOP>

innerNext

public RecordBatch.IterOutcome innerNext()

Overrides:

innerNext in class AbstractUnaryRecordBatch<MetadataHandlerPOP>

setupNewSchema

protected boolean setupNewSchema()

Specified by:

setupNewSchema in class AbstractUnaryRecordBatch<MetadataHandlerPOP>

dump

public void dump()

Description copied from interface: RecordBatch

Perform dump of this batch's state to logs.

getRecordCount

public int getRecordCount()

Description copied from interface: VectorAccessible

Get the number of records.

Returns:

number of records