Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/11659#discussion_r55889878
--- Diff: core/src/main/scala/org/apache/spark/executor/Executor.scala ---
@@ -97,9 +97,9 @@ private[spark] class Executor(
// Set the classloader for serializer
env.serializer.setDefaultClassLoader(replClassLoader)
- // Max RPC message size. If task result is bigger than this, we use the
block manager
+ // Max size of direct result. If task result is bigger than this, we use
the block manager
// to send the result back.
- private val maxRpcMessageSize = RpcUtils.maxMessageSizeBytes(conf)
+ private val maxDirectResultSize = Math.min(1L << 20,
RpcUtils.maxMessageSizeBytes(conf))
--- End diff --
we should have another config for this instead. Also 1MB is very small,
maybe 16 or 32MB?
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