Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/10835#discussion_r50804451
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/TaskResultGetter.scala ---
@@ -82,7 +84,19 @@ private[spark] class TaskResultGetter(sparkEnv:
SparkEnv, scheduler: TaskSchedul
(deserializedResult, size)
}
- result.metrics.setResultSize(size)
+ // Set the task result size in the accumulator updates received
from the executors.
+ // We need to do this here on the driver because if we did this
on the executors then
+ // we would have to serialize the result again after updating
the size.
+ result.accumUpdates = result.accumUpdates.map { a =>
+ if (a.name == InternalAccumulator.RESULT_SIZE) {
+ assert(a.update.getOrElse(0L) == 0L,
--- End diff --
Err, `a.update.isEmpty`?
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