org.apache.drill.exec.planner.fragment.contrib

Class SplittingParallelizer

java.lang.Object

org.apache.drill.exec.planner.fragment.SimpleParallelizer

org.apache.drill.exec.planner.fragment.DefaultQueryParallelizer

org.apache.drill.exec.planner.fragment.contrib.SplittingParallelizer

All Implemented Interfaces:

ParallelizationParameters, QueryParallelizer

public class SplittingParallelizer
extends DefaultQueryParallelizer

SimpleParallelizerMultiPlans class is an extension to SimpleParallelizer to help with getting PlanFragments for split plan. Split plan is essentially ability to create multiple Physical Operator plans from original Physical Operator plan to be able to run plans separately. Moving functionality specific to splitting the plan to this class allows not to pollute parent class with non-authentic functionality.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.drill.exec.planner.fragment.SimpleParallelizer

SimpleParallelizer.CountRequiredFragments

Constructor Summary

Constructors

Constructor and Description
SplittingParallelizer(boolean doMemoryPlanning, QueryContext context)

Method Summary

Modifier and Type

Method and Description

List<QueryWorkUnit>

getSplitFragments(OptionList options, CoordinationProtos.DrillbitEndpoint foremanNode, UserBitShared.QueryId queryId, Collection<CoordinationProtos.DrillbitEndpoint> activeEndpoints, PhysicalPlanReader reader, Fragment rootFragment, UserSession session, BitControl.QueryContextInformation queryContextInfo) Create multiple physical plans from original query planning, it will allow execute them eventually independently

Methods inherited from class org.apache.drill.exec.planner.fragment.DefaultQueryParallelizer

adjustMemory, getMemory

Methods inherited from class org.apache.drill.exec.planner.fragment.SimpleParallelizer

collectStatsAndParallelizeFragments, generateWorkUnit, generateWorkUnit, getAffinityFactor, getMaxGlobalWidth, getMaxWidthPerNode, getRootFragments, getSliceTarget, initFragmentWrappers, prepareFragmentTree, traverse

Methods inherited from class java.lang.Object

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

Constructor Detail

SplittingParallelizer

public SplittingParallelizer(boolean doMemoryPlanning,
                             QueryContext context)

Method Detail

getSplitFragments

public List<QueryWorkUnit> getSplitFragments(OptionList options,
                                             CoordinationProtos.DrillbitEndpoint foremanNode,
                                             UserBitShared.QueryId queryId,
                                             Collection<CoordinationProtos.DrillbitEndpoint> activeEndpoints,
                                             PhysicalPlanReader reader,
                                             Fragment rootFragment,
                                             UserSession session,
                                             BitControl.QueryContextInformation queryContextInfo)
                                      throws ExecutionSetupException

Create multiple physical plans from original query planning, it will allow execute them eventually independently

Overrides:

getSplitFragments in class SimpleParallelizer

Parameters:

options -

foremanNode -

queryId -

activeEndpoints -

reader -

rootFragment -

session -

queryContextInfo -

Returns:

Throws:

ExecutionSetupException