Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18162#discussion_r123424121
--- Diff:
core/src/main/scala/org/apache/spark/internal/config/package.scala ---
@@ -295,4 +295,12 @@ package object config {
"above this threshold. This is to avoid a giant request takes too
much memory.")
.bytesConf(ByteUnit.BYTE)
.createWithDefaultString("200m")
+
+ private[spark] val TASK_METRICS_TRACK_UPDATED_BLOCK_STATUSES =
+ ConfigBuilder("spark.taskMetrics.trackUpdatedBlockStatuses")
--- End diff --
you can document it in `configuration.md`.
Actually can we turn it off by default? I think this is feature is useless
for most of users. cc @JoshRosen
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