spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Lijie Xu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-12554) Standalone app scheduler will hang when app.coreToAssign < minCoresPerExecutor
Date Tue, 29 Dec 2015 10:10:49 GMT
Lijie Xu created SPARK-12554:
--------------------------------

             Summary: Standalone app scheduler will hang when app.coreToAssign < minCoresPerExecutor
                 Key: SPARK-12554
                 URL: https://issues.apache.org/jira/browse/SPARK-12554
             Project: Spark
          Issue Type: Bug
          Components: Deploy, Scheduler
    Affects Versions: 1.5.2
            Reporter: Lijie Xu
            Priority: Critical


In scheduleExecutorsOnWorker() in Master.scala,
*val keepScheduling = coresToAssign >= minCoresPerExecutor* should be changed to *val keepScheduling
= coresToAssign > 0*

Suppose that an app's requested cores is 10 (i.e., spark.cores.max = 10) and app.coresPerExecutor
is 4 (i.e., spark.executor.cores = 4). 

After allocating two executors (each has 4 cores) to the app, the *coresToAssign = 2* and
*minCoresPerExecutor = coresPerExecutor = 4*, so *keepScheduling = false* and no extra executor
will be allocated to the app. As a result, the app and the scheduler will hang.





--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org


Mime
View raw message