Package org.apache.druid.server.scheduling

Class ManualQueryLaningStrategy

java.lang.Object

org.apache.druid.server.scheduling.ManualQueryLaningStrategy

All Implemented Interfaces:

QueryLaningStrategy

public class ManualQueryLaningStrategy
extends Object
implements QueryLaningStrategy

Constructor Summary

Constructors

Constructor	Description
ManualQueryLaningStrategy(Map<String,Integer> lanes, Boolean isLimitPercent)

Method Summary

Modifier and Type	Method	Description
<T> Optional<String>	computeLane(org.apache.druid.query.QueryPlus<T> query, Set<SegmentServerSelector> segments)	For a given QueryPlus and set of SegmentServerSelector, compute if a query belongs to a lane This method must be thread safe
it.unimi.dsi.fastutil.objects.Object2IntMap<String>	getLaneLimits(int totalLimit)	Provide a map of lane names to the limit on the number of concurrent queries for that lane

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.server.QueryLaningStrategy

computeLimitFromPercent

Constructor Detail

ManualQueryLaningStrategy

public ManualQueryLaningStrategy(Map<String,Integer> lanes,
                                 @Nullable
                                 Boolean isLimitPercent)

Method Detail

getLaneLimits

public it.unimi.dsi.fastutil.objects.Object2IntMap<String> getLaneLimits(int totalLimit)

Description copied from interface: QueryLaningStrategy

Provide a map of lane names to the limit on the number of concurrent queries for that lane

Specified by:

getLaneLimits in interface QueryLaningStrategy

computeLane

public <T> Optional<String> computeLane(org.apache.druid.query.QueryPlus<T> query,
                                        Set<SegmentServerSelector> segments)

Description copied from interface: QueryLaningStrategy

For a given QueryPlus and set of SegmentServerSelector, compute if a query belongs to a lane This method must be thread safe

Specified by:

computeLane in interface QueryLaningStrategy