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YARN-3656. LowCost: A Cost-Based Placement Agent for YARN Reservations. (Jonathan Yaniv and Ishai Menache via curino) 

(cherry picked from commit 156f24ead0)
This commit is contained in:
ccurino 2015-07-25 07:39:47 -07:00
parent 621203bf44
commit 26ea045814
38 changed files with 2644 additions and 439 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
hadoop-yarn-project/CHANGES.txt
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@ -92,6 +92,9 @@ Release 2.8.0 - UNRELEASED
YARN-2019. Retrospect on decision of making RM crashed if any exception throw
in ZKRMStateStore. (Jian He via junping_du)
YARN-3656. LowCost: A Cost-Based Placement Agent for YARN Reservations.
(Jonathan Yaniv and Ishai Menache via curino)
IMPROVEMENTS
YARN-644. Basic null check is not performed on passed in arguments before

2
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/AbstractReservationSystem.java
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@ -40,6 +40,8 @@ import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.Planner;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler;

390
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/GreedyReservationAgent.java
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@ -1,390 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
import java.util.HashMap;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Set;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.api.records.ReservationRequestInterpreter;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.ContractValidationException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.util.resource.Resources;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This Agent employs a simple greedy placement strategy, placing the various
* stages of a {@link ReservationRequest} from the deadline moving backward
* towards the arrival. This allows jobs with earlier deadline to be scheduled
* greedily as well. Combined with an opportunistic anticipation of work if the
* cluster is not fully utilized also seems to provide good latency for
* best-effort jobs (i.e., jobs running without a reservation).
*
* This agent does not account for locality and only consider container
* granularity for validation purposes (i.e., you can't exceed max-container
* size).
*/
public class GreedyReservationAgent implements ReservationAgent {
private static final Logger LOG = LoggerFactory
.getLogger(GreedyReservationAgent.class);
@Override
public boolean createReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
return computeAllocation(reservationId, user, plan, contract, null);
}
@Override
public boolean updateReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
return computeAllocation(reservationId, user, plan, contract,
plan.getReservationById(reservationId));
}
@Override
public boolean deleteReservation(ReservationId reservationId, String user,
Plan plan) throws PlanningException {
return plan.deleteReservation(reservationId);
}
private boolean computeAllocation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract,
ReservationAllocation oldReservation) throws PlanningException,
ContractValidationException {
LOG.info("placing the following ReservationRequest: " + contract);
Resource totalCapacity = plan.getTotalCapacity();
// Here we can addd logic to adjust the ResourceDefinition to account for
// system "imperfections" (e.g., scheduling delays for large containers).
// Align with plan step conservatively (i.e., ceil arrival, and floor
// deadline)
long earliestStart = contract.getArrival();
long step = plan.getStep();
if (earliestStart % step != 0) {
earliestStart = earliestStart + (step - (earliestStart % step));
}
long deadline =
contract.getDeadline() - contract.getDeadline() % plan.getStep();
// setup temporary variables to handle time-relations between stages and
// intermediate answers
long curDeadline = deadline;
long oldDeadline = -1;
Map<ReservationInterval, Resource> allocations =
new HashMap<ReservationInterval, Resource>();
RLESparseResourceAllocation tempAssigned =
new RLESparseResourceAllocation(plan.getResourceCalculator(),
plan.getMinimumAllocation());
List<ReservationRequest> stages = contract.getReservationRequests()
.getReservationResources();
ReservationRequestInterpreter type = contract.getReservationRequests()
.getInterpreter();
boolean hasGang = false;
// Iterate the stages in backward from deadline
for (ListIterator<ReservationRequest> li =
stages.listIterator(stages.size()); li.hasPrevious();) {
ReservationRequest currentReservationStage = li.previous();
// validate the RR respect basic constraints
validateInput(plan, currentReservationStage, totalCapacity);
hasGang |= currentReservationStage.getConcurrency() > 1;
// run allocation for a single stage
Map<ReservationInterval, Resource> curAlloc =
placeSingleStage(plan, tempAssigned, currentReservationStage,
earliestStart, curDeadline, oldReservation, totalCapacity);
if (curAlloc == null) {
// if we did not find an allocation for the currentReservationStage
// return null, unless the ReservationDefinition we are placing is of
// type ANY
if (type != ReservationRequestInterpreter.R_ANY) {
throw new PlanningException("The GreedyAgent"
+ " couldn't find a valid allocation for your request");
} else {
continue;
}
} else {
// if we did find an allocation add it to the set of allocations
allocations.putAll(curAlloc);
// if this request is of type ANY we are done searching (greedy)
// and can return the current allocation (break-out of the search)
if (type == ReservationRequestInterpreter.R_ANY) {
break;
}
// if the request is of ORDER or ORDER_NO_GAP we constraint the next
// round of allocation to precede the current allocation, by setting
// curDeadline
if (type == ReservationRequestInterpreter.R_ORDER
|| type == ReservationRequestInterpreter.R_ORDER_NO_GAP) {
curDeadline = findEarliestTime(curAlloc.keySet());
// for ORDER_NO_GAP verify that the allocation found so far has no
// gap, return null otherwise (the greedy procedure failed to find a
// no-gap
// allocation)
if (type == ReservationRequestInterpreter.R_ORDER_NO_GAP
&& oldDeadline > 0) {
if (oldDeadline - findLatestTime(curAlloc.keySet()) > plan
.getStep()) {
throw new PlanningException("The GreedyAgent"
+ " couldn't find a valid allocation for your request");
}
}
// keep the variable oldDeadline pointing to the last deadline we
// found
oldDeadline = curDeadline;
}
}
}
// / If we got here is because we failed to find an allocation for the
// ReservationDefinition give-up and report failure to the user
if (allocations.isEmpty()) {
throw new PlanningException("The GreedyAgent"
+ " couldn't find a valid allocation for your request");
}
// create reservation with above allocations if not null/empty
Resource ZERO_RES = Resource.newInstance(0, 0);
long firstStartTime = findEarliestTime(allocations.keySet());
// add zero-padding from arrival up to the first non-null allocation
// to guarantee that the reservation exists starting at arrival
if (firstStartTime > earliestStart) {
allocations.put(new ReservationInterval(earliestStart,
firstStartTime), ZERO_RES);
firstStartTime = earliestStart;
// consider to add trailing zeros at the end for simmetry
}
// Actually add/update the reservation in the plan.
// This is subject to validation as other agents might be placing
// in parallel and there might be sharing policies the agent is not
// aware off.
ReservationAllocation capReservation =
new InMemoryReservationAllocation(reservationId, contract, user,
plan.getQueueName(), firstStartTime,
findLatestTime(allocations.keySet()), allocations,
plan.getResourceCalculator(), plan.getMinimumAllocation(), hasGang);
if (oldReservation != null) {
return plan.updateReservation(capReservation);
} else {
return plan.addReservation(capReservation);
}
}
private void validateInput(Plan plan, ReservationRequest rr,
Resource totalCapacity) throws ContractValidationException {
if (rr.getConcurrency() < 1) {
throw new ContractValidationException("Gang Size should be >= 1");
}
if (rr.getNumContainers() <= 0) {
throw new ContractValidationException("Num containers should be >= 0");
}
// check that gangSize and numContainers are compatible
if (rr.getNumContainers() % rr.getConcurrency() != 0) {
throw new ContractValidationException(
"Parallelism must be an exact multiple of gang size");
}
// check that the largest container request does not exceed
// the cluster-wide limit for container sizes
if (Resources.greaterThan(plan.getResourceCalculator(), totalCapacity,
rr.getCapability(), plan.getMaximumAllocation())) {
throw new ContractValidationException("Individual"
+ " capability requests should not exceed cluster's maxAlloc");
}
}
/**
* This method actually perform the placement of an atomic stage of the
* reservation. The key idea is to traverse the plan backward for a
* "lease-duration" worth of time, and compute what is the maximum multiple of
* our concurrency (gang) parameter we can fit. We do this and move towards
* previous instant in time until the time-window is exhausted or we placed
* all the user request.
*/
private Map<ReservationInterval, Resource> placeSingleStage(
Plan plan, RLESparseResourceAllocation tempAssigned,
ReservationRequest rr, long earliestStart, long curDeadline,
ReservationAllocation oldResAllocation, final Resource totalCapacity) {
Map<ReservationInterval, Resource> allocationRequests =
new HashMap<ReservationInterval, Resource>();
// compute the gang as a resource and get the duration
Resource gang = Resources.multiply(rr.getCapability(), rr.getConcurrency());
long dur = rr.getDuration();
long step = plan.getStep();
// ceil the duration to the next multiple of the plan step
if (dur % step != 0) {
dur += (step - (dur % step));
}
// we know for sure that this division has no remainder (part of contract
// with user, validate before
int gangsToPlace = rr.getNumContainers() / rr.getConcurrency();
int maxGang = 0;
// loop trying to place until we are done, or we are considering
// an invalid range of times
while (gangsToPlace > 0 && curDeadline - dur >= earliestStart) {
// as we run along we remember how many gangs we can fit, and what
// was the most constraining moment in time (we will restart just
// after that to place the next batch)
maxGang = gangsToPlace;
long minPoint = curDeadline;
int curMaxGang = maxGang;
// start placing at deadline (excluded due to [,) interval semantics and
// move backward
for (long t = curDeadline - plan.getStep(); t >= curDeadline - dur
&& maxGang > 0; t = t - plan.getStep()) {
// As we run along we will logically remove the previous allocation for
// this reservation
// if one existed
Resource oldResCap = Resource.newInstance(0, 0);
if (oldResAllocation != null) {
oldResCap = oldResAllocation.getResourcesAtTime(t);
}
// compute net available resources
Resource netAvailableRes = Resources.clone(totalCapacity);
Resources.addTo(netAvailableRes, oldResCap);
Resources.subtractFrom(netAvailableRes,
plan.getTotalCommittedResources(t));
Resources.subtractFrom(netAvailableRes,
tempAssigned.getCapacityAtTime(t));
// compute maximum number of gangs we could fit
curMaxGang =
(int) Math.floor(Resources.divide(plan.getResourceCalculator(),
totalCapacity, netAvailableRes, gang));
// pick the minimum between available resources in this instant, and how
// many gangs we have to place
curMaxGang = Math.min(gangsToPlace, curMaxGang);
// compare with previous max, and set it. also remember *where* we found
// the minimum (useful for next attempts)
if (curMaxGang <= maxGang) {
maxGang = curMaxGang;
minPoint = t;
}
}
// if we were able to place any gang, record this, and decrement
// gangsToPlace
if (maxGang > 0) {
gangsToPlace -= maxGang;
ReservationInterval reservationInt =
new ReservationInterval(curDeadline - dur, curDeadline);
ReservationRequest reservationRequest =
ReservationRequest.newInstance(rr.getCapability(),
rr.getConcurrency() * maxGang, rr.getConcurrency(),
rr.getDuration());
// remember occupied space (plan is read-only till we find a plausible
// allocation for the entire request). This is needed since we might be
// placing other ReservationRequest within the same
// ReservationDefinition,
// and we must avoid double-counting the available resources
final Resource reservationRes = ReservationSystemUtil.toResource(
reservationRequest);
tempAssigned.addInterval(reservationInt, reservationRes);
allocationRequests.put(reservationInt, reservationRes);
}
// reset our new starting point (curDeadline) to the most constraining
// point so far, we will look "left" of that to find more places where
// to schedule gangs (for sure nothing on the "right" of this point can
// fit a full gang.
curDeadline = minPoint;
}
// if no gangs are left to place we succeed and return the allocation
if (gangsToPlace == 0) {
return allocationRequests;
} else {
// If we are here is becasue we did not manage to satisfy this request.
// So we need to remove unwanted side-effect from tempAssigned (needed
// for ANY).
for (Map.Entry<ReservationInterval, Resource> tempAllocation :
allocationRequests.entrySet()) {
tempAssigned.removeInterval(tempAllocation.getKey(),
tempAllocation.getValue());
}
// and return null to signal failure in this allocation
return null;
}
}
// finds the leftmost point of this set of ReservationInterval
private long findEarliestTime(Set<ReservationInterval> resInt) {
long ret = Long.MAX_VALUE;
for (ReservationInterval s : resInt) {
if (s.getStartTime() < ret) {
ret = s.getStartTime();
}
}
return ret;
}
// finds the rightmost point of this set of ReservationIntervals
private long findLatestTime(Set<ReservationInterval> resInt) {
long ret = Long.MIN_VALUE;
for (ReservationInterval s : resInt) {
if (s.getEndTime() > ret) {
ret = s.getEndTime();
}
}
return ret;
}
}

13
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/InMemoryPlan.java
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@ -33,6 +33,8 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.Planner;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.util.Clock;
import org.apache.hadoop.yarn.util.UTCClock;
@ -41,7 +43,12 @@ import org.apache.hadoop.yarn.util.resource.Resources;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
class InMemoryPlan implements Plan {
/**
* This class represents an in memory representation of the state of our
* reservation system, and provides accelerated access to both individual
* reservations and aggregate utilization of resources over time.
*/
public class InMemoryPlan implements Plan {
private static final Logger LOG = LoggerFactory.getLogger(InMemoryPlan.class);
@ -75,7 +82,7 @@ class InMemoryPlan implements Plan {
private Resource totalCapacity;
InMemoryPlan(QueueMetrics queueMetrics, SharingPolicy policy,
public InMemoryPlan(QueueMetrics queueMetrics, SharingPolicy policy,
ReservationAgent agent, Resource totalCapacity, long step,
ResourceCalculator resCalc, Resource minAlloc, Resource maxAlloc,
String queueName, Planner replanner, boolean getMoveOnExpiry) {
@ -83,7 +90,7 @@ class InMemoryPlan implements Plan {
maxAlloc, queueName, replanner, getMoveOnExpiry, new UTCClock());
}
InMemoryPlan(QueueMetrics queueMetrics, SharingPolicy policy,
public InMemoryPlan(QueueMetrics queueMetrics, SharingPolicy policy,
ReservationAgent agent, Resource totalCapacity, long step,
ResourceCalculator resCalc, Resource minAlloc, Resource maxAlloc,
String queueName, Planner replanner, boolean getMoveOnExpiry, Clock clock) {

6
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/InMemoryReservationAllocation.java
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@ -31,7 +31,7 @@ import org.apache.hadoop.yarn.util.resource.Resources;
* {@link RLESparseResourceAllocation}
*
*/
class InMemoryReservationAllocation implements ReservationAllocation {
public class InMemoryReservationAllocation implements ReservationAllocation {
private final String planName;
private final ReservationId reservationID;
@ -45,7 +45,7 @@ class InMemoryReservationAllocation implements ReservationAllocation {
private RLESparseResourceAllocation resourcesOverTime;
InMemoryReservationAllocation(ReservationId reservationID,
public InMemoryReservationAllocation(ReservationId reservationID,
ReservationDefinition contract, String user, String planName,
long startTime, long endTime,
Map<ReservationInterval, Resource> allocations,
@ -54,7 +54,7 @@ class InMemoryReservationAllocation implements ReservationAllocation {
allocations, calculator, minAlloc, false);
}
InMemoryReservationAllocation(ReservationId reservationID,
public InMemoryReservationAllocation(ReservationId reservationID,
ReservationDefinition contract, String user, String planName,
long startTime, long endTime,
Map<ReservationInterval, Resource> allocations,

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.java
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@ -19,6 +19,7 @@
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
/**
* A Plan represents the central data structure of a reservation system that

2
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/PlanContext.java
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@ -19,6 +19,8 @@
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.Planner;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
import org.apache.hadoop.yarn.util.resource.ResourceCalculator;

5
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/PlanView.java
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@ -1,4 +1,4 @@
/*******************************************************************************
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
@ -14,13 +14,14 @@
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
import java.util.Set;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
/**
* This interface provides a read-only view on the allocations made in this

41
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/RLESparseResourceAllocation.java
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@ -38,7 +38,7 @@ import com.google.gson.stream.JsonWriter;
/**
* This is a run length encoded sparse data structure that maintains resource
* allocations over time
* allocations over time.
*/
public class RLESparseResourceAllocation {
@ -312,4 +312,43 @@ public class RLESparseResourceAllocation {
}
}
/**
* Returns the representation of the current resources allocated over time as
* an interval map.
*
* @return the representation of the current resources allocated over time as
* an interval map.
*/
public Map<ReservationInterval, Resource> toIntervalMap() {
readLock.lock();
try {
Map<ReservationInterval, Resource> allocations =
new TreeMap<ReservationInterval, Resource>();
// Empty
if (isEmpty()) {
return allocations;
}
Map.Entry<Long, Resource> lastEntry = null;
for (Map.Entry<Long, Resource> entry : cumulativeCapacity.entrySet()) {
if (lastEntry != null) {
ReservationInterval interval =
new ReservationInterval(lastEntry.getKey(), entry.getKey());
Resource resource = lastEntry.getValue();
allocations.put(interval, resource);
}
lastEntry = entry;
}
return allocations;
} finally {
readLock.unlock();
}
}
}

6
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationSchedulerConfiguration.java
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@ -21,6 +21,8 @@ package org.apache.hadoop.yarn.server.resourcemanager.reservation;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.Planner;
public abstract class ReservationSchedulerConfiguration extends Configuration {
@ -33,11 +35,11 @@ public abstract class ReservationSchedulerConfiguration extends Configuration {
@InterfaceAudience.Private
public static final String DEFAULT_RESERVATION_AGENT_NAME =
"org.apache.hadoop.yarn.server.resourcemanager.reservation.GreedyReservationAgent";
"org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.AlignedPlannerWithGreedy";
@InterfaceAudience.Private
public static final String DEFAULT_RESERVATION_PLANNER_NAME =
"org.apache.hadoop.yarn.server.resourcemanager.reservation.SimpleCapacityReplanner";
"org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.SimpleCapacityReplanner";
@InterfaceAudience.Private
public static final boolean DEFAULT_RESERVATION_MOVE_ON_EXPIRY = true;

5
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationSystem.java
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@ -24,12 +24,13 @@ import org.apache.hadoop.classification.InterfaceAudience.LimitedPrivate;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.Queue;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
/**
* This interface is the one implemented by any system that wants to support

6
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationSystemUtil.java
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@ -25,7 +25,11 @@ import org.apache.hadoop.yarn.util.resource.Resources;
import java.util.HashMap;
import java.util.Map;
final class ReservationSystemUtil {
/**
* Simple helper class for static methods used to transform across
* common formats in tests
*/
public final class ReservationSystemUtil {
private ReservationSystemUtil() {
// not called

123
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/AlignedPlannerWithGreedy.java Normal file
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@ -0,0 +1,123 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.LinkedList;
import java.util.List;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A planning algorithm that first runs LowCostAligned, and if it fails runs
* Greedy.
*/
public class AlignedPlannerWithGreedy implements ReservationAgent {
// Default smoothness factor
private static final int DEFAULT_SMOOTHNESS_FACTOR = 10;
// Log
private static final Logger LOG = LoggerFactory
.getLogger(AlignedPlannerWithGreedy.class);
// Smoothness factor
private final ReservationAgent planner;
// Constructor
public AlignedPlannerWithGreedy() {
this(DEFAULT_SMOOTHNESS_FACTOR);
}
// Constructor
public AlignedPlannerWithGreedy(int smoothnessFactor) {
// List of algorithms
List<ReservationAgent> listAlg = new LinkedList<ReservationAgent>();
// LowCostAligned planning algorithm
ReservationAgent algAligned =
new IterativePlanner(new StageEarliestStartByDemand(),
new StageAllocatorLowCostAligned(smoothnessFactor));
listAlg.add(algAligned);
// Greedy planning algorithm
ReservationAgent algGreedy =
new IterativePlanner(new StageEarliestStartByJobArrival(),
new StageAllocatorGreedy());
listAlg.add(algGreedy);
// Set planner:
// 1. Attempt to execute algAligned
// 2. If failed, fall back to algGreedy
planner = new TryManyReservationAgents(listAlg);
}
@Override
public boolean createReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
LOG.info("placing the following ReservationRequest: " + contract);
try {
boolean res =
planner.createReservation(reservationId, user, plan, contract);
if (res) {
LOG.info("OUTCOME: SUCCESS, Reservation ID: "
+ reservationId.toString() + ", Contract: " + contract.toString());
} else {
LOG.info("OUTCOME: FAILURE, Reservation ID: "
+ reservationId.toString() + ", Contract: " + contract.toString());
}
return res;
} catch (PlanningException e) {
LOG.info("OUTCOME: FAILURE, Reservation ID: " + reservationId.toString()
+ ", Contract: " + contract.toString());
throw e;
}
}
@Override
public boolean updateReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
LOG.info("updating the following ReservationRequest: " + contract);
return planner.updateReservation(reservationId, user, plan, contract);
}
@Override
public boolean deleteReservation(ReservationId reservationId, String user,
Plan plan) throws PlanningException {
LOG.info("removing the following ReservationId: " + reservationId);
return planner.deleteReservation(reservationId, user, plan);
}
}

97
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/GreedyReservationAgent.java Normal file
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@ -0,0 +1,97 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This Agent employs a simple greedy placement strategy, placing the various
* stages of a {@link ReservationDefinition} from the deadline moving backward
* towards the arrival. This allows jobs with earlier deadline to be scheduled
* greedily as well. Combined with an opportunistic anticipation of work if the
* cluster is not fully utilized also seems to provide good latency for
* best-effort jobs (i.e., jobs running without a reservation).
*
* This agent does not account for locality and only consider container
* granularity for validation purposes (i.e., you can't exceed max-container
* size).
*/
public class GreedyReservationAgent implements ReservationAgent {
// Log
private static final Logger LOG = LoggerFactory
.getLogger(GreedyReservationAgent.class);
// Greedy planner
private final ReservationAgent planner = new IterativePlanner(
new StageEarliestStartByJobArrival(), new StageAllocatorGreedy());
@Override
public boolean createReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
LOG.info("placing the following ReservationRequest: " + contract);
try {
boolean res =
planner.createReservation(reservationId, user, plan, contract);
if (res) {
LOG.info("OUTCOME: SUCCESS, Reservation ID: "
+ reservationId.toString() + ", Contract: " + contract.toString());
} else {
LOG.info("OUTCOME: FAILURE, Reservation ID: "
+ reservationId.toString() + ", Contract: " + contract.toString());
}
return res;
} catch (PlanningException e) {
LOG.info("OUTCOME: FAILURE, Reservation ID: " + reservationId.toString()
+ ", Contract: " + contract.toString());
throw e;
}
}
@Override
public boolean updateReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
LOG.info("updating the following ReservationRequest: " + contract);
return planner.updateReservation(reservationId, user, plan, contract);
}
@Override
public boolean deleteReservation(ReservationId reservationId, String user,
Plan plan) throws PlanningException {
LOG.info("removing the following ReservationId: " + reservationId);
return planner.deleteReservation(reservationId, user, plan);
}
}

338
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/IterativePlanner.java Normal file
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@ -0,0 +1,338 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.HashMap;
import java.util.ListIterator;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.api.records.ReservationRequestInterpreter;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.RLESparseResourceAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationInterval;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.ContractValidationException;
import org.apache.hadoop.yarn.util.resource.Resources;
/**
* A planning algorithm consisting of two main phases. The algorithm iterates
* over the job stages in descending order. For each stage, the algorithm: 1.
* Determines an interval [stageArrivalTime, stageDeadline) in which the stage
* is allocated. 2. Computes an allocation for the stage inside the interval.
*
* For ANY and ALL jobs, phase 1 sets the allocation window of each stage to be
* [jobArrival, jobDeadline]. For ORDER and ORDER_NO_GAP jobs, the deadline of
* each stage is set as succcessorStartTime - the starting time of its
* succeeding stage (or jobDeadline if it is the last stage).
*
* The phases are set using the two functions: 1. setAlgEarliestStartTime 2.
* setAlgComputeStageAllocation
*/
public class IterativePlanner extends PlanningAlgorithm {
// Modifications performed by the algorithm that are not been reflected in the
// actual plan while a request is still pending.
private RLESparseResourceAllocation planModifications;
// Data extracted from plan
private Map<Long, Resource> planLoads;
private Resource capacity;
private long step;
// Job parameters
private ReservationRequestInterpreter jobType;
private long jobArrival;
private long jobDeadline;
// Phase algorithms
private StageEarliestStart algStageEarliestStart = null;
private StageAllocator algStageAllocator = null;
// Constructor
public IterativePlanner(StageEarliestStart algEarliestStartTime,
StageAllocator algStageAllocator) {
setAlgStageEarliestStart(algEarliestStartTime);
setAlgStageAllocator(algStageAllocator);
}
@Override
public RLESparseResourceAllocation computeJobAllocation(Plan plan,
ReservationId reservationId, ReservationDefinition reservation)
throws ContractValidationException {
// Initialize
initialize(plan, reservation);
// If the job has been previously reserved, logically remove its allocation
ReservationAllocation oldReservation =
plan.getReservationById(reservationId);
if (oldReservation != null) {
ignoreOldAllocation(oldReservation);
}
// Create the allocations data structure
RLESparseResourceAllocation allocations =
new RLESparseResourceAllocation(plan.getResourceCalculator(),
plan.getMinimumAllocation());
// Get a reverse iterator for the set of stages
ListIterator<ReservationRequest> li =
reservation
.getReservationRequests()
.getReservationResources()
.listIterator(
reservation.getReservationRequests().getReservationResources()
.size());
// Current stage
ReservationRequest currentReservationStage;
// Index, points on the current node
int index =
reservation.getReservationRequests().getReservationResources().size();
// Stage deadlines
long stageDeadline = stepRoundDown(reservation.getDeadline(), step);
long successorStartingTime = -1;
// Iterate the stages in reverse order
while (li.hasPrevious()) {
// Get current stage
currentReservationStage = li.previous();
index -= 1;
// Validate that the ReservationRequest respects basic constraints
validateInputStage(plan, currentReservationStage);
// Compute an adjusted earliestStart for this resource
// (we need this to provision some space for the ORDER contracts)
long stageArrivalTime = reservation.getArrival();
if (jobType == ReservationRequestInterpreter.R_ORDER
|| jobType == ReservationRequestInterpreter.R_ORDER_NO_GAP) {
stageArrivalTime =
computeEarliestStartingTime(plan, reservation, index,
currentReservationStage, stageDeadline);
}
stageArrivalTime = stepRoundUp(stageArrivalTime, step);
stageArrivalTime = Math.max(stageArrivalTime, reservation.getArrival());
// Compute the allocation of a single stage
Map<ReservationInterval, Resource> curAlloc =
computeStageAllocation(plan, currentReservationStage,
stageArrivalTime, stageDeadline);
// If we did not find an allocation, return NULL
// (unless it's an ANY job, then we simply continue).
if (curAlloc == null) {
// If it's an ANY job, we can move to the next possible request
if (jobType == ReservationRequestInterpreter.R_ANY) {
continue;
}
// Otherwise, the job cannot be allocated
return null;
}
// Get the start & end time of the current allocation
Long stageStartTime = findEarliestTime(curAlloc.keySet());
Long stageEndTime = findLatestTime(curAlloc.keySet());
// If we did find an allocation for the stage, add it
for (Entry<ReservationInterval, Resource> entry : curAlloc.entrySet()) {
allocations.addInterval(entry.getKey(), entry.getValue());
}
// If this is an ANY clause, we have finished
if (jobType == ReservationRequestInterpreter.R_ANY) {
break;
}
// If ORDER job, set the stageDeadline of the next stage to be processed
if (jobType == ReservationRequestInterpreter.R_ORDER
|| jobType == ReservationRequestInterpreter.R_ORDER_NO_GAP) {
// Verify that there is no gap, in case the job is ORDER_NO_GAP
if (jobType == ReservationRequestInterpreter.R_ORDER_NO_GAP
&& successorStartingTime != -1
&& successorStartingTime > stageEndTime) {
return null;
}
// Store the stageStartTime and set the new stageDeadline
successorStartingTime = stageStartTime;
stageDeadline = stageStartTime;
}
}
// If the allocation is empty, return an error
if (allocations.isEmpty()) {
return null;
}
return allocations;
}
protected void initialize(Plan plan, ReservationDefinition reservation) {
// Get plan step & capacity
capacity = plan.getTotalCapacity();
step = plan.getStep();
// Get job parameters (type, arrival time & deadline)
jobType = reservation.getReservationRequests().getInterpreter();
jobArrival = stepRoundUp(reservation.getArrival(), step);
jobDeadline = stepRoundDown(reservation.getDeadline(), step);
// Dirty read of plan load
planLoads = getAllLoadsInInterval(plan, jobArrival, jobDeadline);
// Initialize the plan modifications
planModifications =
new RLESparseResourceAllocation(plan.getResourceCalculator(),
plan.getMinimumAllocation());
}
private Map<Long, Resource> getAllLoadsInInterval(Plan plan, long startTime,
long endTime) {
// Create map
Map<Long, Resource> loads = new HashMap<Long, Resource>();
// Calculate the load for every time slot between [start,end)
for (long t = startTime; t < endTime; t += step) {
Resource load = plan.getTotalCommittedResources(t);
loads.put(t, load);
}
// Return map
return loads;
}
private void ignoreOldAllocation(ReservationAllocation oldReservation) {
// If there is no old reservation, return
if (oldReservation == null) {
return;
}
// Subtract each allocation interval from the planModifications
for (Entry<ReservationInterval, Resource> entry : oldReservation
.getAllocationRequests().entrySet()) {
// Read the entry
ReservationInterval interval = entry.getKey();
Resource resource = entry.getValue();
// Find the actual request
Resource negativeResource = Resources.multiply(resource, -1);
// Insert it into planModifications as a 'negative' request, to
// represent available resources
planModifications.addInterval(interval, negativeResource);
}
}
private void validateInputStage(Plan plan, ReservationRequest rr)
throws ContractValidationException {
// Validate concurrency
if (rr.getConcurrency() < 1) {
throw new ContractValidationException("Gang Size should be >= 1");
}
// Validate number of containers
if (rr.getNumContainers() <= 0) {
throw new ContractValidationException("Num containers should be > 0");
}
// Check that gangSize and numContainers are compatible
if (rr.getNumContainers() % rr.getConcurrency() != 0) {
throw new ContractValidationException(
"Parallelism must be an exact multiple of gang size");
}
// Check that the largest container request does not exceed the cluster-wide
// limit for container sizes
if (Resources.greaterThan(plan.getResourceCalculator(), capacity,
rr.getCapability(), plan.getMaximumAllocation())) {
throw new ContractValidationException(
"Individual capability requests should not exceed cluster's " +
"maxAlloc");
}
}
// Call algEarliestStartTime()
protected long computeEarliestStartingTime(Plan plan,
ReservationDefinition reservation, int index,
ReservationRequest currentReservationStage, long stageDeadline) {
return algStageEarliestStart.setEarliestStartTime(plan, reservation, index,
currentReservationStage, stageDeadline);
}
// Call algStageAllocator
protected Map<ReservationInterval, Resource> computeStageAllocation(
Plan plan, ReservationRequest rr, long stageArrivalTime,
long stageDeadline) {
return algStageAllocator.computeStageAllocation(plan, planLoads,
planModifications, rr, stageArrivalTime, stageDeadline);
}
// Set the algorithm: algStageEarliestStart
public IterativePlanner setAlgStageEarliestStart(StageEarliestStart alg) {
this.algStageEarliestStart = alg;
return this; // To allow concatenation of setAlg() functions
}
// Set the algorithm: algStageAllocator
public IterativePlanner setAlgStageAllocator(StageAllocator alg) {
this.algStageAllocator = alg;
return this; // To allow concatenation of setAlg() functions
}
}

4
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/Planner.java → hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/Planner.java
View File

@ -16,11 +16,13 @@
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.List;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSchedulerConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
public interface Planner {

207
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/PlanningAlgorithm.java Normal file
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@ -0,0 +1,207 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.Map;
import java.util.Set;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.InMemoryReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.RLESparseResourceAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationInterval;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.ContractValidationException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
/**
* An abstract class that follows the general behavior of planning algorithms.
*/
public abstract class PlanningAlgorithm implements ReservationAgent {
/**
* Performs the actual allocation for a ReservationDefinition within a Plan.
*
* @param reservationId the identifier of the reservation
* @param user the user who owns the reservation
* @param plan the Plan to which the reservation must be fitted
* @param contract encapsulates the resources required by the user for his
* session
* @param oldReservation the existing reservation (null if none)
* @return whether the allocateUser function was successful or not
*
* @throws PlanningException if the session cannot be fitted into the plan
* @throws ContractValidationException
*/
protected boolean allocateUser(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract,
ReservationAllocation oldReservation) throws PlanningException,
ContractValidationException {
// Adjust the ResourceDefinition to account for system "imperfections"
// (e.g., scheduling delays for large containers).
ReservationDefinition adjustedContract = adjustContract(plan, contract);
// Compute the job allocation
RLESparseResourceAllocation allocation =
computeJobAllocation(plan, reservationId, adjustedContract);
// If no job allocation was found, fail
if (allocation == null) {
throw new PlanningException(
"The planning algorithm could not find a valid allocation"
+ " for your request");
}
// Translate the allocation to a map (with zero paddings)
long step = plan.getStep();
long jobArrival = stepRoundUp(adjustedContract.getArrival(), step);
long jobDeadline = stepRoundUp(adjustedContract.getDeadline(), step);
Map<ReservationInterval, Resource> mapAllocations =
allocationsToPaddedMap(allocation, jobArrival, jobDeadline);
// Create the reservation
ReservationAllocation capReservation =
new InMemoryReservationAllocation(reservationId, // ID
adjustedContract, // Contract
user, // User name
plan.getQueueName(), // Queue name
findEarliestTime(mapAllocations.keySet()), // Earliest start time
findLatestTime(mapAllocations.keySet()), // Latest end time
mapAllocations, // Allocations
plan.getResourceCalculator(), // Resource calculator
plan.getMinimumAllocation()); // Minimum allocation
// Add (or update) the reservation allocation
if (oldReservation != null) {
return plan.updateReservation(capReservation);
} else {
return plan.addReservation(capReservation);
}
}
private Map<ReservationInterval, Resource>
allocationsToPaddedMap(RLESparseResourceAllocation allocation,
long jobArrival, long jobDeadline) {
// Allocate
Map<ReservationInterval, Resource> mapAllocations =
allocation.toIntervalMap();
// Zero allocation
Resource zeroResource = Resource.newInstance(0, 0);
// Pad at the beginning
long earliestStart = findEarliestTime(mapAllocations.keySet());
if (jobArrival < earliestStart) {
mapAllocations.put(new ReservationInterval(jobArrival, earliestStart),
zeroResource);
}
// Pad at the beginning
long latestEnd = findLatestTime(mapAllocations.keySet());
if (latestEnd < jobDeadline) {
mapAllocations.put(new ReservationInterval(latestEnd, jobDeadline),
zeroResource);
}
return mapAllocations;
}
public abstract RLESparseResourceAllocation computeJobAllocation(Plan plan,
ReservationId reservationId, ReservationDefinition reservation)
throws PlanningException, ContractValidationException;
@Override
public boolean createReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
// Allocate
return allocateUser(reservationId, user, plan, contract, null);
}
@Override
public boolean updateReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
// Get the old allocation
ReservationAllocation oldAlloc = plan.getReservationById(reservationId);
// Allocate (ignores the old allocation)
return allocateUser(reservationId, user, plan, contract, oldAlloc);
}
@Override
public boolean deleteReservation(ReservationId reservationId, String user,
Plan plan) throws PlanningException {
// Delete the existing reservation
return plan.deleteReservation(reservationId);
}
protected static long findEarliestTime(Set<ReservationInterval> sesInt) {
long ret = Long.MAX_VALUE;
for (ReservationInterval s : sesInt) {
if (s.getStartTime() < ret) {
ret = s.getStartTime();
}
}
return ret;
}
protected static long findLatestTime(Set<ReservationInterval> sesInt) {
long ret = Long.MIN_VALUE;
for (ReservationInterval s : sesInt) {
if (s.getEndTime() > ret) {
ret = s.getEndTime();
}
}
return ret;
}
protected static long stepRoundDown(long t, long step) {
return (t / step) * step;
}
protected static long stepRoundUp(long t, long step) {
return ((t + step - 1) / step) * step;
}
private ReservationDefinition adjustContract(Plan plan,
ReservationDefinition originalContract) {
// Place here adjustment. For example using QueueMetrics we can track
// large container delays per YARN-YARN-1990
return originalContract;
}
}

3
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationAgent.java → hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/ReservationAgent.java
View File

@ -15,10 +15,11 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
/**

13
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/SimpleCapacityReplanner.java → hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/SimpleCapacityReplanner.java
View File

@ -16,7 +16,7 @@
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.Iterator;
import java.util.List;
@ -27,6 +27,9 @@ import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSchedulerConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.util.Clock;
import org.apache.hadoop.yarn.util.UTCClock;
@ -87,8 +90,9 @@ public class SimpleCapacityReplanner implements Planner {
// loop on all moment in time from now to the end of the check Zone
// or the end of the planned sessions whichever comes first
for (long t = now; (t < plan.getLastEndTime() && t < (now + lengthOfCheckZone)); t +=
plan.getStep()) {
for (long t = now;
(t < plan.getLastEndTime() && t < (now + lengthOfCheckZone));
t += plan.getStep()) {
Resource excessCap =
Resources.subtract(plan.getTotalCommittedResources(t), totCap);
// if we are violating
@ -98,7 +102,8 @@ public class SimpleCapacityReplanner implements Planner {
new TreeSet<ReservationAllocation>(plan.getReservationsAtTime(t));
for (Iterator<ReservationAllocation> resIter =
curReservations.iterator(); resIter.hasNext()
&& Resources.greaterThan(resCalc, totCap, excessCap, ZERO_RESOURCE);) {
&& Resources.greaterThan(resCalc, totCap, excessCap,
ZERO_RESOURCE);) {
ReservationAllocation reservation = resIter.next();
plan.deleteReservation(reservation.getReservationId());
excessCap =

55
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/StageAllocator.java Normal file
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@ -0,0 +1,55 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.Map;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.RLESparseResourceAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationInterval;
/**
* Interface for allocating a single stage in IterativePlanner.
*/
public interface StageAllocator {
/**
* Computes the allocation of a stage inside a defined time interval.
*
* @param plan the Plan to which the reservation must be fitted
* @param planLoads a 'dirty' read of the plan loads at each time
* @param planModifications the allocations performed by the planning
* algorithm which are not yet reflected by plan
* @param rr the stage
* @param stageEarliestStart the arrival time (earliest starting time) set for
* the stage by the two phase planning algorithm
* @param stageDeadline the deadline of the stage set by the two phase
* planning algorithm
*
* @return The computed allocation (or null if the stage could not be
* allocated)
*/
Map<ReservationInterval, Resource> computeStageAllocation(Plan plan,
Map<Long, Resource> planLoads,
RLESparseResourceAllocation planModifications, ReservationRequest rr,
long stageEarliestStart, long stageDeadline);
}

152
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/StageAllocatorGreedy.java Normal file
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.HashMap;
import java.util.Map;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.RLESparseResourceAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationInterval;
import org.apache.hadoop.yarn.util.resource.Resources;
/**
* Computes the stage allocation according to the greedy allocation rule. The
* greedy rule repeatedly allocates requested containers at the rightmost
* (latest) free interval.
*/
public class StageAllocatorGreedy implements StageAllocator {
@Override
public Map<ReservationInterval, Resource> computeStageAllocation(Plan plan,
Map<Long, Resource> planLoads,
RLESparseResourceAllocation planModifications, ReservationRequest rr,
long stageEarliestStart, long stageDeadline) {
Resource totalCapacity = plan.getTotalCapacity();
Map<ReservationInterval, Resource> allocationRequests =
new HashMap<ReservationInterval, Resource>();
// compute the gang as a resource and get the duration
Resource gang = Resources.multiply(rr.getCapability(), rr.getConcurrency());
long dur = rr.getDuration();
long step = plan.getStep();
// ceil the duration to the next multiple of the plan step
if (dur % step != 0) {
dur += (step - (dur % step));
}
// we know for sure that this division has no remainder (part of contract
// with user, validate before
int gangsToPlace = rr.getNumContainers() / rr.getConcurrency();
int maxGang = 0;
// loop trying to place until we are done, or we are considering
// an invalid range of times
while (gangsToPlace > 0 && stageDeadline - dur >= stageEarliestStart) {
// as we run along we remember how many gangs we can fit, and what
// was the most constraining moment in time (we will restart just
// after that to place the next batch)
maxGang = gangsToPlace;
long minPoint = stageDeadline;
int curMaxGang = maxGang;
// start placing at deadline (excluded due to [,) interval semantics and
// move backward
for (long t = stageDeadline - plan.getStep(); t >= stageDeadline - dur
&& maxGang > 0; t = t - plan.getStep()) {
// compute net available resources
Resource netAvailableRes = Resources.clone(totalCapacity);
// Resources.addTo(netAvailableRes, oldResCap);
Resources.subtractFrom(netAvailableRes,
plan.getTotalCommittedResources(t));
Resources.subtractFrom(netAvailableRes,
planModifications.getCapacityAtTime(t));
// compute maximum number of gangs we could fit
curMaxGang =
(int) Math.floor(Resources.divide(plan.getResourceCalculator(),
totalCapacity, netAvailableRes, gang));
// pick the minimum between available resources in this instant, and how
// many gangs we have to place
curMaxGang = Math.min(gangsToPlace, curMaxGang);
// compare with previous max, and set it. also remember *where* we found
// the minimum (useful for next attempts)
if (curMaxGang <= maxGang) {
maxGang = curMaxGang;
minPoint = t;
}
}
// if we were able to place any gang, record this, and decrement
// gangsToPlace
if (maxGang > 0) {
gangsToPlace -= maxGang;
ReservationInterval reservationInt =
new ReservationInterval(stageDeadline - dur, stageDeadline);
Resource reservationRes =
Resources.multiply(rr.getCapability(), rr.getConcurrency()
* maxGang);
// remember occupied space (plan is read-only till we find a plausible
// allocation for the entire request). This is needed since we might be
// placing other ReservationRequest within the same
// ReservationDefinition,
// and we must avoid double-counting the available resources
planModifications.addInterval(reservationInt, reservationRes);
allocationRequests.put(reservationInt, reservationRes);
}
// reset our new starting point (curDeadline) to the most constraining
// point so far, we will look "left" of that to find more places where
// to schedule gangs (for sure nothing on the "right" of this point can
// fit a full gang.
stageDeadline = minPoint;
}
// if no gangs are left to place we succeed and return the allocation
if (gangsToPlace == 0) {
return allocationRequests;
} else {
// If we are here is becasue we did not manage to satisfy this request.
// So we need to remove unwanted side-effect from tempAssigned (needed
// for ANY).
for (Map.Entry<ReservationInterval, Resource> tempAllocation
: allocationRequests.entrySet()) {
planModifications.removeInterval(tempAllocation.getKey(),
tempAllocation.getValue());
}
// and return null to signal failure in this allocation
return null;
}
}
}

360
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/StageAllocatorLowCostAligned.java Normal file
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@ -0,0 +1,360 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.Comparator;
import java.util.Map;
import java.util.TreeSet;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.RLESparseResourceAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationInterval;
import org.apache.hadoop.yarn.util.resource.ResourceCalculator;
import org.apache.hadoop.yarn.util.resource.Resources;
/**
* A stage allocator that iteratively allocates containers in the
* {@link DurationInterval} with lowest overall cost. The algorithm only
* considers intervals of the form: [stageDeadline - (n+1)*duration,
* stageDeadline - n*duration) for an integer n. This guarantees that the
* allocations are aligned (as opposed to overlapping duration intervals).
*
* The smoothnessFactor parameter controls the number of containers that are
* simultaneously allocated in each iteration of the algorithm.
*/
public class StageAllocatorLowCostAligned implements StageAllocator {
// Smoothness factor
private int smoothnessFactor = 10;
// Constructor
public StageAllocatorLowCostAligned() {
}
// Constructor
public StageAllocatorLowCostAligned(int smoothnessFactor) {
this.smoothnessFactor = smoothnessFactor;
}
// computeJobAllocation()
@Override
public Map<ReservationInterval, Resource> computeStageAllocation(
Plan plan, Map<Long, Resource> planLoads,
RLESparseResourceAllocation planModifications, ReservationRequest rr,
long stageEarliestStart, long stageDeadline) {
// Initialize
ResourceCalculator resCalc = plan.getResourceCalculator();
Resource capacity = plan.getTotalCapacity();
long step = plan.getStep();
// Create allocationRequestsearlies
RLESparseResourceAllocation allocationRequests =
new RLESparseResourceAllocation(plan.getResourceCalculator(),
plan.getMinimumAllocation());
// Initialize parameters
long duration = stepRoundUp(rr.getDuration(), step);
int windowSizeInDurations =
(int) ((stageDeadline - stageEarliestStart) / duration);
int totalGangs = rr.getNumContainers() / rr.getConcurrency();
int numContainersPerGang = rr.getConcurrency();
Resource gang =
Resources.multiply(rr.getCapability(), numContainersPerGang);
// Set maxGangsPerUnit
int maxGangsPerUnit =
(int) Math.max(
Math.floor(((double) totalGangs) / windowSizeInDurations), 1);
maxGangsPerUnit = Math.max(maxGangsPerUnit / smoothnessFactor, 1);
// If window size is too small, return null
if (windowSizeInDurations <= 0) {
return null;
}
// Initialize tree sorted by costs
TreeSet<DurationInterval> durationIntervalsSortedByCost =
new TreeSet<DurationInterval>(new Comparator<DurationInterval>() {
@Override
public int compare(DurationInterval val1, DurationInterval val2) {
int cmp = Double.compare(val1.getTotalCost(), val2.getTotalCost());
if (cmp != 0) {
return cmp;
}
return (-1) * Long.compare(val1.getEndTime(), val2.getEndTime());
}
});
// Add durationIntervals that end at (endTime - n*duration) for some n.
for (long intervalEnd = stageDeadline; intervalEnd >= stageEarliestStart
+ duration; intervalEnd -= duration) {
long intervalStart = intervalEnd - duration;
// Get duration interval [intervalStart,intervalEnd)
DurationInterval durationInterval =
getDurationInterval(intervalStart, intervalEnd, planLoads,
planModifications, capacity, resCalc, step);
// If the interval can fit a gang, add it to the tree
if (durationInterval.canAllocate(gang, capacity, resCalc)) {
durationIntervalsSortedByCost.add(durationInterval);
}
}
// Allocate
int remainingGangs = totalGangs;
while (remainingGangs > 0) {
// If no durationInterval can fit a gang, break and return null
if (durationIntervalsSortedByCost.isEmpty()) {
break;
}
// Get best duration interval
DurationInterval bestDurationInterval =
durationIntervalsSortedByCost.first();
int numGangsToAllocate = Math.min(maxGangsPerUnit, remainingGangs);
// Add it
remainingGangs -= numGangsToAllocate;
ReservationInterval reservationInt =
new ReservationInterval(bestDurationInterval.getStartTime(),
bestDurationInterval.getEndTime());
Resource reservationRes =
Resources.multiply(rr.getCapability(), rr.getConcurrency()
* numGangsToAllocate);
planModifications.addInterval(reservationInt, reservationRes);
allocationRequests.addInterval(reservationInt, reservationRes);
// Remove from tree
durationIntervalsSortedByCost.remove(bestDurationInterval);
// Get updated interval
DurationInterval updatedDurationInterval =
getDurationInterval(bestDurationInterval.getStartTime(),
bestDurationInterval.getStartTime() + duration, planLoads,
planModifications, capacity, resCalc, step);
// Add to tree, if possible
if (updatedDurationInterval.canAllocate(gang, capacity, resCalc)) {
durationIntervalsSortedByCost.add(updatedDurationInterval);
}
}
// Get the final allocation
Map<ReservationInterval, Resource> allocations =
allocationRequests.toIntervalMap();
// If no gangs are left to place we succeed and return the allocation
if (remainingGangs <= 0) {
return allocations;
} else {
// If we are here is because we did not manage to satisfy this request.
// We remove unwanted side-effect from planModifications (needed for ANY).
for (Map.Entry<ReservationInterval, Resource> tempAllocation
: allocations.entrySet()) {
planModifications.removeInterval(tempAllocation.getKey(),
tempAllocation.getValue());
}
// Return null to signal failure in this allocation
return null;
}
}
protected DurationInterval getDurationInterval(long startTime, long endTime,
Map<Long, Resource> planLoads,
RLESparseResourceAllocation planModifications, Resource capacity,
ResourceCalculator resCalc, long step) {
// Initialize the dominant loads structure
Resource dominantResources = Resource.newInstance(0, 0);
// Calculate totalCost and maxLoad
double totalCost = 0.0;
for (long t = startTime; t < endTime; t += step) {
// Get the load
Resource load = getLoadAtTime(t, planLoads, planModifications);
// Increase the total cost
totalCost += calcCostOfLoad(load, capacity, resCalc);
// Update the dominant resources
dominantResources = Resources.componentwiseMax(dominantResources, load);
}
// Return the corresponding durationInterval
return new DurationInterval(startTime, endTime, totalCost,
dominantResources);
}
protected double calcCostOfInterval(long startTime, long endTime,
Map<Long, Resource> planLoads,
RLESparseResourceAllocation planModifications, Resource capacity,
ResourceCalculator resCalc, long step) {
// Sum costs in the interval [startTime,endTime)
double totalCost = 0.0;
for (long t = startTime; t < endTime; t += step) {
totalCost += calcCostOfTimeSlot(t, planLoads, planModifications, capacity,
resCalc);
}
// Return sum
return totalCost;
}
protected double calcCostOfTimeSlot(long t, Map<Long, Resource> planLoads,
RLESparseResourceAllocation planModifications, Resource capacity,
ResourceCalculator resCalc) {
// Get the current load at time t
Resource load = getLoadAtTime(t, planLoads, planModifications);
// Return cost
return calcCostOfLoad(load, capacity, resCalc);
}
protected Resource getLoadAtTime(long t, Map<Long, Resource> planLoads,
RLESparseResourceAllocation planModifications) {
Resource planLoad = planLoads.get(t);
planLoad = (planLoad == null) ? Resource.newInstance(0, 0) : planLoad;
return Resources.add(planLoad, planModifications.getCapacityAtTime(t));
}
protected double calcCostOfLoad(Resource load, Resource capacity,
ResourceCalculator resCalc) {
return resCalc.ratio(load, capacity);
}
protected static long stepRoundDown(long t, long step) {
return (t / step) * step;
}
protected static long stepRoundUp(long t, long step) {
return ((t + step - 1) / step) * step;
}
/**
* An inner class that represents an interval, typically of length duration.
* The class holds the total cost of the interval and the maximal load inside
* the interval in each dimension (both calculated externally).
*/
protected static class DurationInterval {
private long startTime;
private long endTime;
private double cost;
private Resource maxLoad;
// Constructor
public DurationInterval(long startTime, long endTime, double cost,
Resource maxLoad) {
this.startTime = startTime;
this.endTime = endTime;
this.cost = cost;
this.maxLoad = maxLoad;
}
// canAllocate() - boolean function, returns whether requestedResources
// can be allocated during the durationInterval without
// violating capacity constraints
public boolean canAllocate(Resource requestedResources, Resource capacity,
ResourceCalculator resCalc) {
Resource updatedMaxLoad = Resources.add(maxLoad, requestedResources);
return (resCalc.compare(capacity, updatedMaxLoad, capacity) <= 0);
}
// numCanFit() - returns the maximal number of requestedResources can be
// allocated during the durationInterval without violating
// capacity constraints
public int numCanFit(Resource requestedResources, Resource capacity,
ResourceCalculator resCalc) {
// Represents the largest resource demand that can be satisfied throughout
// the entire DurationInterval (i.e., during [startTime,endTime))
Resource availableResources = Resources.subtract(capacity, maxLoad);
// Maximal number of requestedResources that fit inside the interval
return (int) Math.floor(Resources.divide(resCalc, capacity,
availableResources, requestedResources));
}
public long getStartTime() {
return this.startTime;
}
public void setStartTime(long value) {
this.startTime = value;
}
public long getEndTime() {
return this.endTime;
}
public void setEndTime(long value) {
this.endTime = value;
}
public Resource getMaxLoad() {
return this.maxLoad;
}
public void setMaxLoad(Resource value) {
this.maxLoad = value;
}
public double getTotalCost() {
return this.cost;
}
public void setTotalCost(double value) {
this.cost = value;
}
}
}

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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/StageEarliestStart.java Normal file
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
/**
* Interface for setting the earliest start time of a stage in IterativePlanner.
*/
public interface StageEarliestStart {
/**
* Computes the earliest allowed starting time for a given stage.
*
* @param plan the Plan to which the reservation must be fitted
* @param reservation the job contract
* @param index the index of the stage in the job contract
* @param currentReservationStage the stage
* @param stageDeadline the deadline of the stage set by the two phase
* planning algorithm
*
* @return the earliest allowed starting time for the stage.
*/
long setEarliestStartTime(Plan plan, ReservationDefinition reservation,
int index, ReservationRequest currentReservationStage,
long stageDeadline);
}

106
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/StageEarliestStartByDemand.java Normal file
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.ListIterator;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
/**
* Sets the earliest start time of a stage proportional to the job weight. The
* interval [jobArrival, stageDeadline) is divided as follows. First, each stage
* is guaranteed at least its requested duration. Then, the stage receives a
* fraction of the remaining time. The fraction is calculated as the ratio
* between the weight (total requested resources) of the stage and the total
* weight of all proceeding stages.
*/
public class StageEarliestStartByDemand implements StageEarliestStart {
private long step;
@Override
public long setEarliestStartTime(Plan plan,
ReservationDefinition reservation, int index, ReservationRequest current,
long stageDeadline) {
step = plan.getStep();
// If this is the first stage, don't bother with the computation.
if (index < 1) {
return reservation.getArrival();
}
// Get iterator
ListIterator<ReservationRequest> li =
reservation.getReservationRequests().getReservationResources()
.listIterator(index);
ReservationRequest rr;
// Calculate the total weight & total duration
double totalWeight = calcWeight(current);
long totalDuration = getRoundedDuration(current, plan);
while (li.hasPrevious()) {
rr = li.previous();
totalWeight += calcWeight(rr);
totalDuration += getRoundedDuration(rr, plan);
}
// Compute the weight of the current stage as compared to remaining ones
double ratio = calcWeight(current) / totalWeight;
// Estimate an early start time, such that:
// 1. Every stage is guaranteed to receive at least its duration
// 2. The remainder of the window is divided between stages
// proportionally to its workload (total memory consumption)
long window = stageDeadline - reservation.getArrival();
long windowRemainder = window - totalDuration;
long earlyStart =
(long) (stageDeadline - getRoundedDuration(current, plan)
- (windowRemainder * ratio));
// Realign if necessary (since we did some arithmetic)
earlyStart = stepRoundUp(earlyStart, step);
// Return
return earlyStart;
}
// Weight = total memory consumption of stage
protected double calcWeight(ReservationRequest stage) {
return (stage.getDuration() * stage.getCapability().getMemory())
* (stage.getNumContainers());
}
protected long getRoundedDuration(ReservationRequest stage, Plan plan) {
return stepRoundUp(stage.getDuration(), step);
}
protected static long stepRoundDown(long t, long step) {
return (t / step) * step;
}
protected static long stepRoundUp(long t, long step) {
return ((t + step - 1) / step) * step;
}
}

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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/StageEarliestStartByJobArrival.java Normal file
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
/**
* Sets the earliest start time of a stage as the job arrival time.
*/
public class StageEarliestStartByJobArrival implements StageEarliestStart {
@Override
public long setEarliestStartTime(Plan plan,
ReservationDefinition reservation, int index, ReservationRequest current,
long stageDeadline) {
return reservation.getArrival();
}
}

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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/TryManyReservationAgents.java Normal file
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import java.util.LinkedList;
import java.util.List;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
/**
* A planning algorithm that invokes several other planning algorithms according
* to a given order. If one of the planners succeeds, the allocation it
* generates is returned.
*/
public class TryManyReservationAgents implements ReservationAgent {
// Planning algorithms
private final List<ReservationAgent> algs;
// Constructor
public TryManyReservationAgents(List<ReservationAgent> algs) {
this.algs = new LinkedList<ReservationAgent>(algs);
}
@Override
public boolean createReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
// Save the planning exception
PlanningException planningException = null;
// Try all of the algorithms, in order
for (ReservationAgent alg : algs) {
try {
if (alg.createReservation(reservationId, user, plan, contract)) {
return true;
}
} catch (PlanningException e) {
planningException = e;
}
}
// If all of the algorithms failed and one of the algorithms threw an
// exception, throw the last planning exception
if (planningException != null) {
throw planningException;
}
// If all of the algorithms failed, return false
return false;
}
@Override
public boolean updateReservation(ReservationId reservationId, String user,
Plan plan, ReservationDefinition contract) throws PlanningException {
// Save the planning exception
PlanningException planningException = null;
// Try all of the algorithms, in order
for (ReservationAgent alg : algs) {
try {
if (alg.updateReservation(reservationId, user, plan, contract)) {
return true;
}
} catch (PlanningException e) {
planningException = e;
}
}
// If all of the algorithms failed and one of the algorithms threw an
// exception, throw the last planning exception
if (planningException != null) {
throw planningException;
}
// If all of the algorithms failed, return false
return false;
}
@Override
public boolean deleteReservation(ReservationId reservationId, String user,
Plan plan) throws PlanningException {
return plan.deleteReservation(reservationId);
}
}

5
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationSystemTestUtil.java
View File

@ -45,6 +45,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.MockNodes;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.RMContextImpl;
import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsManager;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.AlignedPlannerWithGreedy;
import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.AbstractYarnScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler;
@ -89,7 +90,7 @@ public class ReservationSystemTestUtil {
Assert.assertEquals(planQName, plan.getQueueName());
Assert.assertEquals(8192, plan.getTotalCapacity().getMemory());
Assert.assertTrue(
plan.getReservationAgent() instanceof GreedyReservationAgent);
plan.getReservationAgent() instanceof AlignedPlannerWithGreedy);
Assert.assertTrue(
plan.getSharingPolicy() instanceof CapacityOverTimePolicy);
}
@ -102,7 +103,7 @@ public class ReservationSystemTestUtil {
Assert.assertEquals(newQ, newPlan.getQueueName());
Assert.assertEquals(1024, newPlan.getTotalCapacity().getMemory());
Assert
.assertTrue(newPlan.getReservationAgent() instanceof GreedyReservationAgent);
.assertTrue(newPlan.getReservationAgent() instanceof AlignedPlannerWithGreedy);
Assert
.assertTrue(newPlan.getSharingPolicy() instanceof CapacityOverTimePolicy);
}

2
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestCapacityOverTimePolicy.java
View File

@ -29,7 +29,7 @@ import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningQuotaException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.ResourceOverCommitException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator;
import org.apache.hadoop.yarn.util.resource.ResourceCalculator;

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestCapacitySchedulerPlanFollower.java
View File

@ -35,6 +35,7 @@ import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.Queue;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CSQueue;

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestFairReservationSystem.java
View File

@ -20,7 +20,6 @@ package org.apache.hadoop.yarn.server.resourcemanager.reservation;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.server.resourcemanager.MockNodes;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler;

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestFairSchedulerPlanFollower.java
View File

@ -37,6 +37,7 @@ import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.resource.ResourceType;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.Queue;

2
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestInMemoryPlan.java
View File

@ -34,6 +34,8 @@ import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.impl.pb.ReservationDefinitionPBImpl;
import org.apache.hadoop.yarn.api.records.impl.pb.ReservationRequestsPBImpl;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.Planner;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.util.Clock;
import org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator;

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestNoOverCommitPolicy.java
View File

@ -27,6 +27,7 @@ import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.MismatchedUserException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.ResourceOverCommitException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator;
import org.apache.hadoop.yarn.util.resource.ResourceCalculator;

47
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestRLESparseResourceAllocation.java
View File

@ -164,6 +164,53 @@ public class TestRLESparseResourceAllocation {
Assert.assertTrue(rleSparseVector.isEmpty());
}
@Test
public void testToIntervalMap() {
ResourceCalculator resCalc = new DefaultResourceCalculator();
Resource minAlloc = Resource.newInstance(1, 1);
RLESparseResourceAllocation rleSparseVector =
new RLESparseResourceAllocation(resCalc, minAlloc);
Map<ReservationInterval, Resource> mapAllocations;
// Check empty
mapAllocations = rleSparseVector.toIntervalMap();
Assert.assertTrue(mapAllocations.isEmpty());
// Check full
int[] alloc = { 0, 5, 10, 10, 5, 0, 5, 0 };
int start = 100;
Set<Entry<ReservationInterval, Resource>> inputs =
generateAllocation(start, alloc, false).entrySet();
for (Entry<ReservationInterval, Resource> ip : inputs) {
rleSparseVector.addInterval(ip.getKey(), ip.getValue());
}
mapAllocations = rleSparseVector.toIntervalMap();
Assert.assertTrue(mapAllocations.size() == 5);
for (Entry<ReservationInterval, Resource> entry : mapAllocations
.entrySet()) {
ReservationInterval interval = entry.getKey();
Resource resource = entry.getValue();
if (interval.getStartTime() == 101L) {
Assert.assertTrue(interval.getEndTime() == 102L);
Assert.assertEquals(resource, Resource.newInstance(5 * 1024, 5));
} else if (interval.getStartTime() == 102L) {
Assert.assertTrue(interval.getEndTime() == 104L);
Assert.assertEquals(resource, Resource.newInstance(10 * 1024, 10));
} else if (interval.getStartTime() == 104L) {
Assert.assertTrue(interval.getEndTime() == 105L);
Assert.assertEquals(resource, Resource.newInstance(5 * 1024, 5));
} else if (interval.getStartTime() == 105L) {
Assert.assertTrue(interval.getEndTime() == 106L);
Assert.assertEquals(resource, Resource.newInstance(0 * 1024, 0));
} else if (interval.getStartTime() == 106L) {
Assert.assertTrue(interval.getEndTime() == 107L);
Assert.assertEquals(resource, Resource.newInstance(5 * 1024, 5));
} else {
Assert.fail();
}
}
}
private Map<ReservationInterval, Resource> generateAllocation(
int startTime, int[] alloc, boolean isStep) {
Map<ReservationInterval, Resource> req =

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestSchedulerPlanFollowerBase.java
View File

@ -24,6 +24,7 @@ import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptState;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.Queue;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;

820
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/TestAlignedPlanner.java Normal file
View File

@ -0,0 +1,820 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.mock;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.api.records.ReservationRequestInterpreter;
import org.apache.hadoop.yarn.api.records.ReservationRequests;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.CapacityOverTimePolicy;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.InMemoryPlan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.InMemoryReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSchedulerConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSystemTestUtil;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.AlignedPlannerWithGreedy;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator;
import org.apache.hadoop.yarn.util.resource.ResourceCalculator;
import org.apache.hadoop.yarn.util.resource.Resources;
import org.junit.Before;
import org.junit.Test;
import org.mortbay.log.Log;
public class TestAlignedPlanner {
ReservationAgent agent;
InMemoryPlan plan;
Resource minAlloc = Resource.newInstance(1024, 1);
ResourceCalculator res = new DefaultResourceCalculator();
Resource maxAlloc = Resource.newInstance(1024 * 8, 8);
Random rand = new Random();
long step;
@Test
public void testSingleReservationAccept() throws PlanningException {
// Prepare basic plan
int numJobsInScenario = initializeScenario1();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
5 * step, // Job arrival time
20 * step, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(2048, 2), // Capability
10, // Num containers
5, // Concurrency
10 * step) }, // Duration
ReservationRequestInterpreter.R_ORDER, "u1");
// Add reservation
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
// CHECK: allocation was accepted
assertTrue("Agent-based allocation failed", reservationID != null);
assertTrue("Agent-based allocation failed", plan.getAllReservations()
.size() == numJobsInScenario + 1);
// Get reservation
ReservationAllocation alloc1 = plan.getReservationById(reservationID);
// Verify allocation
assertTrue(alloc1.toString(),
check(alloc1, 10 * step, 20 * step, 10, 2048, 2));
}
@Test
public void testOrderNoGapImpossible() throws PlanningException {
// Prepare basic plan
int numJobsInScenario = initializeScenario2();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10L, // Job arrival time
15 * step, // Job deadline
new ReservationRequest[] {
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
step), // Duration
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ORDER_NO_GAP, "u1");
// Add reservation
try {
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
fail();
} catch (PlanningException e) {
// Expected failure
}
// CHECK: allocation was not accepted
assertTrue("Agent-based allocation should have failed", plan
.getAllReservations().size() == numJobsInScenario);
}
@Test
public void testOrderNoGapImpossible2() throws PlanningException {
// Prepare basic plan
int numJobsInScenario = initializeScenario2();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10 * step, // Job arrival time
13 * step, // Job deadline
new ReservationRequest[] {
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
step), // Duration
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
10, // Num containers
10, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ORDER_NO_GAP, "u1");
// Add reservation
try {
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
fail();
} catch (PlanningException e) {
// Expected failure
}
// CHECK: allocation was not accepted
assertTrue("Agent-based allocation should have failed", plan
.getAllReservations().size() == numJobsInScenario);
}
@Test
public void testOrderImpossible() throws PlanningException {
// Prepare basic plan
int numJobsInScenario = initializeScenario2();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10 * step, // Job arrival time
15 * step, // Job deadline
new ReservationRequest[] {
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
2 * step), // Duration
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ORDER, "u1");
// Add reservation
try {
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
fail();
} catch (PlanningException e) {
// Expected failure
}
// CHECK: allocation was not accepted
assertTrue("Agent-based allocation should have failed", plan
.getAllReservations().size() == numJobsInScenario);
}
@Test
public void testAnyImpossible() throws PlanningException {
// Prepare basic plan
int numJobsInScenario = initializeScenario2();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10 * step, // Job arrival time
15 * step, // Job deadline
new ReservationRequest[] {
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
3 * step), // Duration
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
2 * step) }, // Duration
ReservationRequestInterpreter.R_ANY, "u1");
// Add reservation
try {
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
fail();
} catch (PlanningException e) {
// Expected failure
}
// CHECK: allocation was not accepted
assertTrue("Agent-based allocation should have failed", plan
.getAllReservations().size() == numJobsInScenario);
}
@Test
public void testAnyAccept() throws PlanningException {
// Prepare basic plan
int numJobsInScenario = initializeScenario2();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10 * step, // Job arrival time
15 * step, // Job deadline
new ReservationRequest[] {
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
step), // Duration
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
2 * step) }, // Duration
ReservationRequestInterpreter.R_ANY, "u1");
// Add reservation
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
// CHECK: allocation was accepted
assertTrue("Agent-based allocation failed", reservationID != null);
assertTrue("Agent-based allocation failed", plan.getAllReservations()
.size() == numJobsInScenario + 1);
// Get reservation
ReservationAllocation alloc1 = plan.getReservationById(reservationID);
// Verify allocation
assertTrue(alloc1.toString(),
check(alloc1, 14 * step, 15 * step, 20, 1024, 1));
}
@Test
public void testAllAccept() throws PlanningException {
// Prepare basic plan
int numJobsInScenario = initializeScenario2();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10 * step, // Job arrival time
15 * step, // Job deadline
new ReservationRequest[] {
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
step), // Duration
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u1");
// Add reservation
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
// CHECK: allocation was accepted
assertTrue("Agent-based allocation failed", reservationID != null);
assertTrue("Agent-based allocation failed", plan.getAllReservations()
.size() == numJobsInScenario + 1);
// Get reservation
ReservationAllocation alloc1 = plan.getReservationById(reservationID);
// Verify allocation
assertTrue(alloc1.toString(),
check(alloc1, 10 * step, 11 * step, 20, 1024, 1));
assertTrue(alloc1.toString(),
check(alloc1, 14 * step, 15 * step, 20, 1024, 1));
}
@Test
public void testAllImpossible() throws PlanningException {
// Prepare basic plan
int numJobsInScenario = initializeScenario2();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10 * step, // Job arrival time
15 * step, // Job deadline
new ReservationRequest[] {
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
step), // Duration
ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
2 * step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u1");
// Add reservation
try {
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
fail();
} catch (PlanningException e) {
// Expected failure
}
// CHECK: allocation was not accepted
assertTrue("Agent-based allocation should have failed", plan
.getAllReservations().size() == numJobsInScenario);
}
@Test
public void testUpdate() throws PlanningException {
// Create flexible reservation
ReservationDefinition rrFlex =
createReservationDefinition(
10 * step, // Job arrival time
14 * step, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
100, // Num containers
1, // Concurrency
2 * step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u1");
// Create blocking reservation
ReservationDefinition rrBlock =
createReservationDefinition(
10 * step, // Job arrival time
11 * step, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
100, // Num containers
100, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u1");
// Create reservation IDs
ReservationId flexReservationID =
ReservationSystemTestUtil.getNewReservationId();
ReservationId blockReservationID =
ReservationSystemTestUtil.getNewReservationId();
// Add block, add flex, remove block, update flex
agent.createReservation(blockReservationID, "uBlock", plan, rrBlock);
agent.createReservation(flexReservationID, "uFlex", plan, rrFlex);
agent.deleteReservation(blockReservationID, "uBlock", plan);
agent.updateReservation(flexReservationID, "uFlex", plan, rrFlex);
// CHECK: allocation was accepted
assertTrue("Agent-based allocation failed", flexReservationID != null);
assertTrue("Agent-based allocation failed", plan.getAllReservations()
.size() == 1);
// Get reservation
ReservationAllocation alloc1 = plan.getReservationById(flexReservationID);
// Verify allocation
assertTrue(alloc1.toString(),
check(alloc1, 10 * step, 14 * step, 50, 1024, 1));
}
@Test
public void testImpossibleDuration() throws PlanningException {
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10 * step, // Job arrival time
15 * step, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
20, // Num containers
20, // Concurrency
10 * step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u1");
// Add reservation
try {
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
fail();
} catch (PlanningException e) {
// Expected failure
}
// CHECK: allocation was not accepted
assertTrue("Agent-based allocation should have failed", plan
.getAllReservations().size() == 0);
}
@Test
public void testLoadedDurationIntervals() throws PlanningException {
int numJobsInScenario = initializeScenario3();
// Create reservation
ReservationDefinition rr1 =
createReservationDefinition(
10 * step, // Job arrival time
13 * step, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
80, // Num containers
10, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u1");
// Add reservation
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u1", plan, rr1);
// CHECK: allocation was accepted
assertTrue("Agent-based allocation failed", reservationID != null);
assertTrue("Agent-based allocation failed", plan.getAllReservations()
.size() == numJobsInScenario + 1);
// Get reservation
ReservationAllocation alloc1 = plan.getReservationById(reservationID);
// Verify allocation
assertTrue(alloc1.toString(),
check(alloc1, 10 * step, 11 * step, 20, 1024, 1));
assertTrue(alloc1.toString(),
check(alloc1, 11 * step, 12 * step, 20, 1024, 1));
assertTrue(alloc1.toString(),
check(alloc1, 12 * step, 13 * step, 40, 1024, 1));
}
@Test
public void testCostFunction() throws PlanningException {
// Create large memory reservation
ReservationDefinition rr7Mem1Core =
createReservationDefinition(
10 * step, // Job arrival time
11 * step, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(7 * 1024, 1),// Capability
1, // Num containers
1, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u1");
// Create reservation
ReservationDefinition rr6Mem6Cores =
createReservationDefinition(
10 * step, // Job arrival time
11 * step, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(6 * 1024, 6),// Capability
1, // Num containers
1, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u2");
// Create reservation
ReservationDefinition rr =
createReservationDefinition(
10 * step, // Job arrival time
12 * step, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
1, // Num containers
1, // Concurrency
step) }, // Duration
ReservationRequestInterpreter.R_ALL, "u3");
// Create reservation IDs
ReservationId reservationID1 =
ReservationSystemTestUtil.getNewReservationId();
ReservationId reservationID2 =
ReservationSystemTestUtil.getNewReservationId();
ReservationId reservationID3 =
ReservationSystemTestUtil.getNewReservationId();
// Add all
agent.createReservation(reservationID1, "u1", plan, rr7Mem1Core);
agent.createReservation(reservationID2, "u2", plan, rr6Mem6Cores);
agent.createReservation(reservationID3, "u3", plan, rr);
// Get reservation
ReservationAllocation alloc3 = plan.getReservationById(reservationID3);
assertTrue(alloc3.toString(),
check(alloc3, 10 * step, 11 * step, 0, 1024, 1));
assertTrue(alloc3.toString(),
check(alloc3, 11 * step, 12 * step, 1, 1024, 1));
}
@Test
public void testFromCluster() throws PlanningException {
// int numJobsInScenario = initializeScenario3();
List<ReservationDefinition> list = new ArrayList<ReservationDefinition>();
// Create reservation
list.add(createReservationDefinition(
1425716392178L, // Job arrival time
1425722262791L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
7, // Num containers
1, // Concurrency
587000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u1"));
list.add(createReservationDefinition(
1425716406178L, // Job arrival time
1425721255841L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
6, // Num containers
1, // Concurrency
485000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u2"));
list.add(createReservationDefinition(
1425716399178L, // Job arrival time
1425723780138L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
6, // Num containers
1, // Concurrency
738000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u3"));
list.add(createReservationDefinition(
1425716437178L, // Job arrival time
1425722968378L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
7, // Num containers
1, // Concurrency
653000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u4"));
list.add(createReservationDefinition(
1425716406178L, // Job arrival time
1425721926090L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
6, // Num containers
1, // Concurrency
552000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u5"));
list.add(createReservationDefinition(
1425716379178L, // Job arrival time
1425722238553L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
6, // Num containers
1, // Concurrency
586000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u6"));
list.add(createReservationDefinition(
1425716407178L, // Job arrival time
1425722908317L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
7, // Num containers
1, // Concurrency
650000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u7"));
list.add(createReservationDefinition(
1425716452178L, // Job arrival time
1425722841562L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
6, // Num containers
1, // Concurrency
639000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u8"));
list.add(createReservationDefinition(
1425716384178L, // Job arrival time
1425721766129L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
7, // Num containers
1, // Concurrency
538000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u9"));
list.add(createReservationDefinition(
1425716437178L, // Job arrival time
1425722507886L, // Job deadline
new ReservationRequest[] { ReservationRequest.newInstance(
Resource.newInstance(1024, 1), // Capability
5, // Num containers
1, // Concurrency
607000) }, // Duration
ReservationRequestInterpreter.R_ALL, "u10"));
// Add reservation
int i = 1;
for (ReservationDefinition rr : list) {
ReservationId reservationID =
ReservationSystemTestUtil.getNewReservationId();
agent.createReservation(reservationID, "u" + Integer.toString(i), plan,
rr);
++i;
}
// CHECK: allocation was accepted
assertTrue("Agent-based allocation failed", plan.getAllReservations()
.size() == list.size());
}
@Before
public void setup() throws Exception {
// Initialize random seed
long seed = rand.nextLong();
rand.setSeed(seed);
Log.info("Running with seed: " + seed);
// Set cluster parameters
long timeWindow = 1000000L;
int capacityMem = 100 * 1024;
int capacityCores = 100;
step = 60000L;
Resource clusterCapacity = Resource.newInstance(capacityMem, capacityCores);
// Set configuration
ReservationSystemTestUtil testUtil = new ReservationSystemTestUtil();
String reservationQ = testUtil.getFullReservationQueueName();
float instConstraint = 100;
float avgConstraint = 100;
ReservationSchedulerConfiguration conf =
ReservationSystemTestUtil.createConf(reservationQ, timeWindow,
instConstraint, avgConstraint);
CapacityOverTimePolicy policy = new CapacityOverTimePolicy();
policy.init(reservationQ, conf);
QueueMetrics queueMetrics = mock(QueueMetrics.class);
// Set planning agent
agent = new AlignedPlannerWithGreedy();
// Create Plan
plan =
new InMemoryPlan(queueMetrics, policy, agent, clusterCapacity, step,
res, minAlloc, maxAlloc, "dedicated", null, true);
}
private int initializeScenario1() throws PlanningException {
// insert in the reservation a couple of controlled reservations, to create
// conditions for assignment that are non-empty
addFixedAllocation(0L, step, new int[] { 10, 10, 20, 20, 20, 10, 10 });
System.out.println("--------BEFORE AGENT----------");
System.out.println(plan.toString());
System.out.println(plan.toCumulativeString());
return 1;
}
private int initializeScenario2() throws PlanningException {
// insert in the reservation a couple of controlled reservations, to create
// conditions for assignment that are non-empty
addFixedAllocation(11 * step, step, new int[] { 90, 90, 90 });
System.out.println("--------BEFORE AGENT----------");
System.out.println(plan.toString());
System.out.println(plan.toCumulativeString());
return 1;
}
private int initializeScenario3() throws PlanningException {
// insert in the reservation a couple of controlled reservations, to create
// conditions for assignment that are non-empty
addFixedAllocation(10 * step, step, new int[] { 70, 80, 60 });
System.out.println("--------BEFORE AGENT----------");
System.out.println(plan.toString());
System.out.println(plan.toCumulativeString());
return 1;
}
private void addFixedAllocation(long start, long step, int[] f)
throws PlanningException {
assertTrue(plan.toString(),
plan.addReservation(new InMemoryReservationAllocation(
ReservationSystemTestUtil.getNewReservationId(), null,
"user_fixed", "dedicated", start, start + f.length * step,
ReservationSystemTestUtil.generateAllocation(start, step, f), res,
minAlloc)));
}
private ReservationDefinition createReservationDefinition(long arrival,
long deadline, ReservationRequest[] reservationRequests,
ReservationRequestInterpreter rType, String username) {
return ReservationDefinition.newInstance(arrival, deadline,
ReservationRequests.newInstance(Arrays.asList(reservationRequests),
rType), username);
}
private boolean check(ReservationAllocation alloc, long start, long end,
int containers, int mem, int cores) {
Resource expectedResources =
Resource.newInstance(mem * containers, cores * containers);
// Verify that all allocations in [start,end) equal containers * (mem,cores)
for (long i = start; i < end; i++) {
if (!Resources.equals(alloc.getResourcesAtTime(i), expectedResources)) {
return false;
}
}
return true;
}
}

9
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestGreedyReservationAgent.java → hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/TestGreedyReservationAgent.java
View File

@ -15,7 +15,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
@ -37,6 +37,13 @@ import org.apache.hadoop.yarn.api.records.ReservationRequests;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.impl.pb.ReservationDefinitionPBImpl;
import org.apache.hadoop.yarn.api.records.impl.pb.ReservationRequestsPBImpl;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.CapacityOverTimePolicy;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.InMemoryPlan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.InMemoryReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationInterval;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSchedulerConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSystemTestUtil;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler;

10
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestSimpleCapacityReplanner.java → hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/TestSimpleCapacityReplanner.java
View File

@ -15,7 +15,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
package org.apache.hadoop.yarn.server.resourcemanager.reservation;
package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
@ -30,6 +30,14 @@ import java.util.TreeMap;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.InMemoryPlan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.InMemoryReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.NoOverCommitPolicy;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationAllocation;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationInterval;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSchedulerConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSystemUtil;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.SharingPolicy;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.util.Clock;