Package org.apache.druid.segment.metadata

Class SegmentSchemaBackFillQueue

java.lang.Object

org.apache.druid.segment.metadata.SegmentSchemaBackFillQueue

public class SegmentSchemaBackFillQueue
extends Object

This class publishes the segment schema for segments obtained via segment metadata query. It maintains a queue which is populated by CoordinatorSegmentMetadataCache.

Constructor Summary

Constructors

Constructor	Description
SegmentSchemaBackFillQueue(SegmentSchemaManager segmentSchemaManager, ScheduledExecutorFactory scheduledExecutorFactory, SegmentSchemaCache segmentSchemaCache, FingerprintGenerator fingerprintGenerator, ServiceEmitter emitter, CentralizedDatasourceSchemaConfig config)

Method Summary

Modifier and Type	Method	Description
void	add(SegmentId segmentId, SchemaPayloadPlus schemaMetadata)
boolean	isEnabled()
void	onLeaderStart()
void	onLeaderStop()
void	processBatchesDue()
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Details

SegmentSchemaBackFillQueue

@Inject
public SegmentSchemaBackFillQueue(SegmentSchemaManager segmentSchemaManager,
 ScheduledExecutorFactory scheduledExecutorFactory,
 SegmentSchemaCache segmentSchemaCache,
 FingerprintGenerator fingerprintGenerator,
 ServiceEmitter emitter,
 CentralizedDatasourceSchemaConfig config)

Method Details

stop

public void stop()

onLeaderStart

public void onLeaderStart()

onLeaderStop

public void onLeaderStop()

add

public void add(SegmentId segmentId,
 SchemaPayloadPlus schemaMetadata)

isEnabled

public boolean isEnabled()

processBatchesDue

public void processBatchesDue()