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Posted to commits@heron.apache.org by GitBox <gi...@apache.org> on 2019/04/29 23:42:33 UTC

[GitHub] [incubator-heron] nwangtw opened a new pull request #3251: Check invalid number of container in round robin packing algorithm

nwangtw opened a new pull request #3251: Check invalid number of container in round robin packing algorithm
URL: https://github.com/apache/incubator-heron/pull/3251
 
 
   Currently if number of containers is set to an invalid value, we get the following exception which is not ideal.
   
   ```
   
   [2019-04-29 15:17:05 -0700] [FINE] org.apache.heron.scheduler.SubmitterMain: Exception when submitting topology 
   java.lang.NullPointerException
   	at org.apache.heron.packing.roundrobin.RoundRobinPacking.getRoundRobinAllocation(RoundRobinPacking.java:385)
   	at org.apache.heron.packing.roundrobin.RoundRobinPacking.packInternal(RoundRobinPacking.java:149)
   
   ```
   
   After the change, we would expect "Invlaid number of container: %d" runtime exception.
   

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