Package org.apache.pinot.broker.routing.segmentselector

Class DefaultSegmentSelector

java.lang.Object

org.apache.pinot.broker.routing.segmentselector.DefaultSegmentSelector

All Implemented Interfaces:

SegmentSelector

public class DefaultSegmentSelector
extends Object
implements SegmentSelector

Constructor Summary

Constructors

Constructor	Description
DefaultSegmentSelector()

Method Summary

Modifier and Type	Method	Description
void	init(org.apache.helix.model.IdealState idealState, org.apache.helix.model.ExternalView externalView, Set<String> onlineSegments)	Initializes the segment selector with the ideal state, external view and online segments (segments with ONLINE/CONSUMING instances in the ideal state and pre-selected by the SegmentPreSelector).
void	onAssignmentChange(org.apache.helix.model.IdealState idealState, org.apache.helix.model.ExternalView externalView, Set<String> onlineSegments)	Processes the segment assignment (ideal state or external view) change based on the given online segments (segments with ONLINE/CONSUMING instances in the ideal state and pre-selected by the SegmentPreSelector).
Set<String>	select(org.apache.pinot.common.request.BrokerRequest brokerRequest)	Selects the segments queried by the given broker request.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultSegmentSelector

public DefaultSegmentSelector()

Method Detail

init

public void init(org.apache.helix.model.IdealState idealState,
                 org.apache.helix.model.ExternalView externalView,
                 Set<String> onlineSegments)

Description copied from interface: SegmentSelector

Initializes the segment selector with the ideal state, external view and online segments (segments with ONLINE/CONSUMING instances in the ideal state and pre-selected by the SegmentPreSelector). Should be called only once before calling other methods.

Specified by:

init in interface SegmentSelector

onAssignmentChange

public void onAssignmentChange(org.apache.helix.model.IdealState idealState,
                               org.apache.helix.model.ExternalView externalView,
                               Set<String> onlineSegments)

Description copied from interface: SegmentSelector

Processes the segment assignment (ideal state or external view) change based on the given online segments (segments with ONLINE/CONSUMING instances in the ideal state and pre-selected by the SegmentPreSelector).

Specified by:

onAssignmentChange in interface SegmentSelector

select

public Set<String> select(org.apache.pinot.common.request.BrokerRequest brokerRequest)

Description copied from interface: SegmentSelector

Selects the segments queried by the given broker request. The segments selected should cover the whole dataset (table) without overlap.

Specified by:

select in interface SegmentSelector