Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18174#discussion_r125546465
--- Diff:
core/src/main/scala/org/apache/spark/internal/config/package.scala ---
@@ -335,4 +335,29 @@ package object config {
"spark.")
.booleanConf
.createWithDefault(false)
+
+ private[spark] val SHUFFLE_FILE_BUFFER_SIZE =
+ ConfigBuilder("spark.shuffle.file.buffer")
+ .doc("Used to set the buffer size of outputstream in shuffle
writer.")
+ .bytesConf(ByteUnit.KiB)
+ .checkValue(v => v > 0 && v <= Int.MaxValue / 1024,
+ s"The file buffer size must be greater than 0 to ${Int.MaxValue /
1024}.")
--- End diff --
`must be greater than 0 and less than ${Int.MaxValue / 1024}`
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