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Posted to mapreduce-issues@hadoop.apache.org by "Jason Lowe (Created) (JIRA)" <ji...@apache.org> on 2012/04/12 18:29:30 UTC

[jira] [Created] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

ResourceManager NPE while handling NODE_UPDATE
----------------------------------------------

                 Key: MAPREDUCE-4144
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
            Reporter: Jason Lowe
            Priority: Critical


The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:

{noformat}
2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
 [ResourceManager Event Processor]java.lang.NullPointerException
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
        at java.lang.Thread.run(Thread.java:619)
{noformat}

This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Jason Lowe (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253029#comment-13253029 ] 

Jason Lowe commented on MAPREDUCE-4144:
---------------------------------------

All of these test failures are unrelated to the patch.  All the tests except TestAMAuthorization are failing due to socket bind errors (runaway processes on the test machine?).  TestAMAuthorization is testing unrelated code, and the test passes for me when I run it locally.
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Siddharth Seth (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253805#comment-13253805 ] 

Siddharth Seth commented on MAPREDUCE-4144:
-------------------------------------------

+1. lgtm. Thanks Jason.
The same won't occur with off-switch requests since "*" seems to be a mandatory request - and is never removed from the request table.
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Updated] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Jason Lowe (Updated) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe updated MAPREDUCE-4144:
----------------------------------

    Attachment: MAPREDUCE-4144.patch

Patch that avoids the early-out in canAssign() for a reserved container if we're not doing OFF-SWITCH.

Not sure this is the best fix, as we could still have a reserved container on this node that has already been handled by another node.  But at least we won't crash the RM when that happens.
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Priority: Critical
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Updated] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Jason Lowe (Updated) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe updated MAPREDUCE-4144:
----------------------------------

    Attachment: MAPREDUCE-4144-testcase.patch

I think the fix for MAPREDUCE-3005 is being skipped due to reserved containers.  Here's the scenario:

# Application has some requests that are NODE_LOCAL and some others that are ANY.
# Node A heartbeats in and we try to schedule the NODE_LOCAL request on it, but there are no available containers and instead we make a reservation.
# Node B heartbeats in and it's on the same rack as Node A, so we fulfill the corresponding RACK_LOCAL request that went with Node A's NODE_LOCAL request.
# Node A heartbeats in with some spare containers, and we skip the MAPREDUCE-3005 fix in canAssign() because there is a reserved container on this node.  Since the RACK_LOCAL request was removed when we assigned it to Node B, we crash because we assume all NODE_LOCAL requests will have a corresponding RACK_LOCAL request.

I checked the RM log above the crash, and I did find indications of container reservations being in play.  For example:

{noformat}
 [ResourceManager Event Processor]2012-04-12 02:09:01,671 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler: Trying to fulfill re
servation for application application_1334157153376_0281 on node: xxx:8041
 [ResourceManager Event Processor]2012-04-12 02:09:01,671 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp: Application application_1334157153
376_0281 unreserved  on node host: xxx:8041 #containers=3 available=7680 used=13824, currently has 70 at priority org.apache.hadoop.yarn.api
.records.impl.pb.PriorityPBImpl@33; currentReservation memory: 322560
{noformat}

Attached is a testcase that reproduces the NPE crash with the same backtrace.
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Priority: Critical
>         Attachments: MAPREDUCE-4144-testcase.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Hadoop QA (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252999#comment-13252999 ] 

Hadoop QA commented on MAPREDUCE-4144:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12522497/MAPREDUCE-4144.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 1 new or modified test files.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit warnings.

    -1 core tests.  The patch failed these unit tests:
                  org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell
                  org.apache.hadoop.yarn.server.TestDiskFailures
                  org.apache.hadoop.yarn.server.TestContainerManagerSecurity
                  org.apache.hadoop.yarn.server.resourcemanager.TestClientRMService
                  org.apache.hadoop.yarn.server.resourcemanager.resourcetracker.TestNMExpiry
                  org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization
                  org.apache.hadoop.yarn.server.resourcemanager.TestApplicationACLs
                  org.apache.hadoop.mapred.TestMiniMRClasspath
                  org.apache.hadoop.mapreduce.v2.TestMRJobs
                  org.apache.hadoop.mapred.TestMiniMRWithDFSWithDistinctUsers
                  org.apache.hadoop.mapred.TestMiniMRBringup
                  org.apache.hadoop.mapred.TestMiniMRChildTask
                  org.apache.hadoop.mapred.TestReduceFetch
                  org.apache.hadoop.mapred.TestClusterMRNotification
                  org.apache.hadoop.mapred.TestReduceFetchFromPartialMem
                  org.apache.hadoop.mapred.TestJobCounters
                  org.apache.hadoop.mapreduce.TestChild
                  org.apache.hadoop.mapred.TestMiniMRClientCluster
                  org.apache.hadoop.ipc.TestSocketFactory
                  org.apache.hadoop.mapreduce.v2.TestMRJobsWithHistoryService
                  org.apache.hadoop.mapreduce.v2.TestMROldApiJobs
                  org.apache.hadoop.mapreduce.v2.TestSpeculativeExecution
                  org.apache.hadoop.mapreduce.lib.output.TestJobOutputCommitter
                  org.apache.hadoop.mapred.TestClientRedirect
                  org.apache.hadoop.mapred.TestLazyOutput
                  org.apache.hadoop.mapred.TestJobCleanup
                  org.apache.hadoop.mapreduce.TestMapReduceLazyOutput
                  org.apache.hadoop.mapred.TestSpecialCharactersInOutputPath
                  org.apache.hadoop.mapreduce.v2.TestMRAppWithCombiner
                  org.apache.hadoop.conf.TestNoDefaultsJobConf
                  org.apache.hadoop.mapreduce.v2.TestRMNMInfo
                  org.apache.hadoop.mapred.TestClusterMapReduceTestCase
                  org.apache.hadoop.mapreduce.v2.TestNonExistentJob
                  org.apache.hadoop.mapred.TestJobSysDirWithDFS
                  org.apache.hadoop.mapreduce.v2.TestUberAM
                  org.apache.hadoop.mapreduce.v2.TestMiniMRProxyUser
                  org.apache.hadoop.mapred.TestJobName
                  org.apache.hadoop.mapreduce.security.TestJHSSecurity

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2216//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2216//console

This message is automatically generated.
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Hudson (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253823#comment-13253823 ] 

Hudson commented on MAPREDUCE-4144:
-----------------------------------

Integrated in Hadoop-Common-trunk-Commit #2072 (See [https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2072/])
    MAPREDUCE-4144. Fix a NPE in the ResourceManager when handling node updates. (Contributed by Jason Lowe) (Revision 1325991)

     Result = SUCCESS
sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1325991
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java

                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Closed] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Arun C Murthy (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy closed MAPREDUCE-4144.
------------------------------------

    
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3, 2.0.2-alpha
>
>         Attachments: MAPREDUCE-4144.patch, MAPREDUCE-4144-testcase.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Hudson (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253820#comment-13253820 ] 

Hudson commented on MAPREDUCE-4144:
-----------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #2145 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/2145/])
    MAPREDUCE-4144. Fix a NPE in the ResourceManager when handling node updates. (Contributed by Jason Lowe) (Revision 1325991)

     Result = SUCCESS
sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1325991
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java

                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Arun C Murthy (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254921#comment-13254921 ] 

Arun C Murthy commented on MAPREDUCE-4144:
------------------------------------------

Sorry for coming late to this...

I'm not sure this is the right fix, we could just handle the NPE with a null check in AppSchedulingInfo.allocateNodeLocal?
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Jason Lowe (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254943#comment-13254943 ] 

Jason Lowe commented on MAPREDUCE-4144:
---------------------------------------

Do we want to allocate a node local container if there's no rack local to go with it?  I thought the change in MAPREDUCE-3005 was specifically trying to avoid allocating in that case.  Does the fact that the container is reserved change that somehow?
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Updated] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Jason Lowe (Updated) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe updated MAPREDUCE-4144:
----------------------------------

    Target Version/s: 0.23.3
              Status: Patch Available  (was: Open)
    
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Priority: Critical
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Hudson (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254111#comment-13254111 ] 

Hudson commented on MAPREDUCE-4144:
-----------------------------------

Integrated in Hadoop-Hdfs-trunk #1014 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1014/])
    MAPREDUCE-4144. Fix a NPE in the ResourceManager when handling node updates. (Contributed by Jason Lowe) (Revision 1325991)

     Result = FAILURE
sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1325991
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java

                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Assigned] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Jason Lowe (Assigned) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe reassigned MAPREDUCE-4144:
-------------------------------------

    Assignee: Jason Lowe
    
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Hudson (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253835#comment-13253835 ] 

Hudson commented on MAPREDUCE-4144:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #2086 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2086/])
    MAPREDUCE-4144. Fix a NPE in the ResourceManager when handling node updates. (Contributed by Jason Lowe) (Revision 1325991)

     Result = FAILURE
sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1325991
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java

                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Hudson (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254123#comment-13254123 ] 

Hudson commented on MAPREDUCE-4144:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk #1049 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1049/])
    MAPREDUCE-4144. Fix a NPE in the ResourceManager when handling node updates. (Contributed by Jason Lowe) (Revision 1325991)

     Result = SUCCESS
sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1325991
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java

                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Updated] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Siddharth Seth (Updated) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Siddharth Seth updated MAPREDUCE-4144:
--------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.23.3
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

Committed to trunk, branch-2 and branch-0.23
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Hudson (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254100#comment-13254100 ] 

Hudson commented on MAPREDUCE-4144:
-----------------------------------

Integrated in Hadoop-Hdfs-0.23-Build #227 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/227/])
    Merge MAPREDUCE-4144 from trunk. Fix a NPE in the ResourceManager when handling node updates. (Contributed by Jason Lowe) (Revision 1325994)

     Result = SUCCESS
sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1325994
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java

                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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[jira] [Commented] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE

Posted by "Jason Lowe (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAPREDUCE-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13255649#comment-13255649 ] 

Jason Lowe commented on MAPREDUCE-4144:
---------------------------------------

Is the concern that with this change we won't remove the reservation or NODE_LOCAL request?  This could still have happened in the case where the node doesn't free up sufficient resources before the application ends up finishing with containers on other nodes.  Assuming the app doesn't complete first, I think the reservation will be cleaned up in assignReservedContainer() either because there are no more outstanding requests at the same priority or it will fill the reservation with an ANY request (since we know there aren't any more RACK_LOCAL requests in this scenario).

But I might be misreading the code.  If it's critical to allocate the reserved container as NODE_LOCAL once the node has enough free resources, we can undo this fix and put the rackLocal null check in AppSchedulingInfo.allocateNodeLocal.
                
> ResourceManager NPE while handling NODE_UPDATE
> ----------------------------------------------
>
>                 Key: MAPREDUCE-4144
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-4144-testcase.patch, MAPREDUCE-4144.patch
>
>
> The RM on one of our clusters has exited twice in the past few days because of an NPE while trying to handle a NODE_UPDATE:
> {noformat}
> 2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
>  [ResourceManager Event Processor]java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is very similar to the failure reported in MAPREDUCE-3005.

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