[ 
https://issues.apache.org/jira/browse/GOBBLIN-1460?focusedWorklogId=607514&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-607514
 ]

ASF GitHub Bot logged work on GOBBLIN-1460:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 06/Jun/21 19:17
            Start Date: 06/Jun/21 19:17
    Worklog Time Spent: 10m 
      Work Description: aplex opened a new pull request #3300:
URL: https://github.com/apache/gobblin/pull/3300


   Under certain conditions, we can get a null list when checking if
   dag has running job. This is a quickfix to address that.
   
   https://issues.apache.org/jira/browse/GOBBLIN-1460
   


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 607514)
    Remaining Estimate: 0h
            Time Spent: 10m

> NullPointer exception in DagManager when cleaning up jobs
> ---------------------------------------------------------
>
>                 Key: GOBBLIN-1460
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-1460
>             Project: Apache Gobblin
>          Issue Type: Bug
>          Components: gobblin-core
>            Reporter: Alex Prokofiev
>            Assignee: Abhishek Tiwari
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> [
>     {
>         "index": 0,
>         "stackTrace": [
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 1100,
>                 "fileName": "DagManager.java",
>                 "index": 0,
>                 "source": 
> "org.apache.gobblin.service.modules.orchestration.DagManager$DagManagerThread",
>                 "call": "hasRunningJobs"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 1161,
>                 "fileName": "DagManager.java",
>                 "index": 1,
>                 "source": 
> "org.apache.gobblin.service.modules.orchestration.DagManager$DagManagerThread",
>                 "call": "cleanUp"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 516,
>                 "fileName": "DagManager.java",
>                 "index": 2,
>                 "source": 
> "org.apache.gobblin.service.modules.orchestration.DagManager$DagManagerThread",
>                 "call": "run"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 511,
>                 "fileName": "Executors.java",
>                 "index": 3,
>                 "source": "java.util.concurrent.Executors$RunnableAdapter",
>                 "call": "call"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 308,
>                 "fileName": "FutureTask.java",
>                 "index": 4,
>                 "source": "java.util.concurrent.FutureTask",
>                 "call": "runAndReset"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 180,
>                 "fileName": "ScheduledThreadPoolExecutor.java",
>                 "index": 5,
>                 "source": 
> "java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask",
>                 "call": "access$301"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 294,
>                 "fileName": "ScheduledThreadPoolExecutor.java",
>                 "index": 6,
>                 "source": 
> "java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask",
>                 "call": "run"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 1149,
>                 "fileName": "ThreadPoolExecutor.java",
>                 "index": 7,
>                 "source": "java.util.concurrent.ThreadPoolExecutor",
>                 "call": "runWorker"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 624,
>                 "fileName": "ThreadPoolExecutor.java",
>                 "index": 8,
>                 "source": "java.util.concurrent.ThreadPoolExecutor$Worker",
>                 "call": "run"
>             },
>             {
>                 "columnNumber": null,
>                 "nativeMethod": "0",
>                 "lineNumber": 748,
>                 "fileName": "Thread.java",
>                 "index": 9,
>                 "source": "java.lang.Thread",
>                 "call": "run"
>             }
>         ],
>         "message": "java.lang.NullPointerException",
>         "type": "java.lang.NullPointerException"
>     }
> ]



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