Github user LantaoJin commented on a diff in the pull request:
https://github.com/apache/spark/pull/20532#discussion_r166817939
--- Diff:
core/src/main/scala/org/apache/spark/internal/config/package.scala ---
@@ -53,10 +53,21 @@ package object config {
.booleanConf
.createWithDefault(false)
- private[spark] val EVENT_LOG_BLOCK_UPDATES =
- ConfigBuilder("spark.eventLog.logBlockUpdates.enabled")
- .booleanConf
- .createWithDefault(false)
+ private[spark] val EVENT_LOG_BLOCK_UPDATES_FRACTION =
+ ConfigBuilder("spark.eventLog.logBlockUpdates.fraction")
+ .doc("Expected number of times each blockUpdated event is chosen to
log, " +
+ "fraction must be [0, 1]. 0 by default, means disabled")
+ .doubleConf
+ .checkValue(_ >= 0, "The fraction must not be negative")
--- End diff --
Ok, actually greater than 1 has the same meaning with equals to 1 (100%
selected)
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