Package org.elasticsearch.xpack.esql.datasources

Class AsyncExternalSourceOperator

java.lang.Object

org.elasticsearch.compute.operator.SourceOperator

org.elasticsearch.xpack.esql.datasources.AsyncExternalSourceOperator

All Implemented Interfaces:

Closeable, AutoCloseable, Operator, org.elasticsearch.core.Releasable

public class AsyncExternalSourceOperator
extends SourceOperator

Source operator that retrieves data from external sources (Iceberg tables, Parquet files, etc.). Modeled after ExchangeSourceOperator. This operator uses an async pattern: - Background thread reads from external source and fills a buffer - Operator polls from buffer without blocking the Driver - isBlocked() signals when waiting for data

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AsyncExternalSourceOperator.Status

Nested classes/interfaces inherited from class org.elasticsearch.compute.operator.SourceOperator

SourceOperator.ShardLoad, SourceOperator.SourceOperatorFactory

Nested classes/interfaces inherited from interface org.elasticsearch.compute.operator.Operator

Operator.OperatorFactory

Field Summary

Fields inherited from interface org.elasticsearch.compute.operator.Operator

MIN_TARGET_PAGE_SIZE, NOT_BLOCKED, TARGET_PAGE_SIZE

Constructor Summary

Constructors

Constructor	Description
AsyncExternalSourceOperator(AsyncExternalSourceBuffer buffer)

Method Summary

Modifier and Type	Method	Description
void	close()
void	finish()
Page	getOutput()
IsBlockedResult	isBlocked()
boolean	isFinished()
AsyncExternalSourceOperator.Status	status()
String	toString()

Methods inherited from class org.elasticsearch.compute.operator.SourceOperator

addInput, canProduceMoreDataWithoutExtraInput, needsInput, shardLoadDelta

Methods inherited from class java.lang.Object

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

Constructor Details

AsyncExternalSourceOperator

public AsyncExternalSourceOperator(AsyncExternalSourceBuffer buffer)

Method Details

getOutput

public Page getOutput()

isFinished

public boolean isFinished()

finish

public void finish()

isBlocked

public IsBlockedResult isBlocked()

close

public void close()

toString

public String toString()

Overrides:

toString in class Object

status

public AsyncExternalSourceOperator.Status status()