[SPARK-3190][GraphX] fix VertexRDD.count exceed on large graph #12835
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Can one of the admins verify this patch? |
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cc @ankurdave |
maropu
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Apr 23, 2017
Closes apache#11785 Closes apache#13027 Closes apache#13614 Closes apache#13761 Closes apache#15197 Closes apache#14006 Closes apache#12576 Closes apache#15447 Closes apache#13259 Closes apache#15616 Closes apache#14473 Closes apache#16638 Closes apache#16146 Closes apache#17269 Closes apache#17313 Closes apache#17418 Closes apache#17485 Closes apache#17551 Closes apache#17463 Closes apache#17625 Closes apache#10739 Closes apache#15193 Closes apache#15344 Closes apache#14804 Closes apache#16993 Closes apache#17040 Closes apache#15180 Closes apache#17238
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As [SPARK-3190] and #2106 described, VertexRDDs with more than 4 billion elements are counted incorrectly due to integer overflow when summing partition sizes.
And the PR above expected to fix the issue by converting partition sizes to Longs before summing them. But when the number of vertices in specific partition exceed Integer.MAX_VALUE also can repreduce this issue.
The fundamental cause of this problem is the variable “size” is defined as type Int in class VertexPartitionBase.
def size: Int = mask.cardinality()