[jira] [Created] (SPARK-21234) When the function returns Option[Iterator[_]] is None,then get on None will cause java.util.NoSuchElementException: None.get

[wangjiaochun (JIRA)]

wangjiaochun created SPARK-21234:
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             Summary: When the function returns Option[Iterator[_]] is 
None,then get on None will cause java.util.NoSuchElementException: None.get
                 Key: SPARK-21234
                 URL: https://issues.apache.org/jira/browse/SPARK-21234
             Project: Spark
          Issue Type: Bug
          Components: Block Manager
    Affects Versions: 2.1.1
            Reporter: wangjiaochun


Class BlockManager {
...........................................
def getLocalValues(blockId: BlockId): Option[BlockResult] ={
...............................................
memoryStore.getValues(blockId).get
...............................................
}
..............................................
}
The above code getValues return three type values: 
None,IllegalArgumentException and normal ,if return None,Cause 
java.util.NoSuchElementException: None.get。so I think this is potential Bug;



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