LingZhou created SPARK-11617:
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             Summary: MEMORY LEAK: ByteBuf.release() was not called before it's 
garbage-collected
                 Key: SPARK-11617
                 URL: https://issues.apache.org/jira/browse/SPARK-11617
             Project: Spark
          Issue Type: Bug
          Components: Spark Core, YARN
    Affects Versions: 1.6.0
            Reporter: LingZhou


The problem may be related to
 [SPARK-11235][NETWORK] Add ability to stream data using network lib.

while running on yarn-client mode, there are error messages:

15/11/09 10:23:55 ERROR util.ResourceLeakDetector: LEAK: ByteBuf.release() was 
not called before it's garbage-collected. Enable advanced leak reporting to 
find out where the leak occurred. To enable advanced leak reporting, specify 
the JVM option '-Dio.netty.leakDetectionLevel=advanced' or call 
ResourceLeakDetector.setLevel() See 
http://netty.io/wiki/reference-counted-objects.html for more information.

and then it will cause 
cluster.YarnSchedulerBackend$YarnSchedulerEndpoint: Container killed by YARN 
for exceeding memory limits. 9.0 GB of 9 GB physical memory used. Consider 
boosting spark.yarn.executor.memoryOverhead.

and WARN scheduler.TaskSetManager: Lost task 105.0 in stage 1.0 (TID 2616, 
gsr489): java.lang.IndexOutOfBoundsException: index: 130828, length: 16833 
(expected: range(0, 524288)).



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