Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/10835#discussion_r50891801
--- Diff: core/src/main/scala/org/apache/spark/util/JsonProtocol.scala ---
@@ -284,11 +284,44 @@ private[spark] object JsonProtocol {
}
def accumulableInfoToJson(accumulableInfo: AccumulableInfo): JValue = {
+ val name = accumulableInfo.name
("ID" -> accumulableInfo.id) ~
- ("Name" -> accumulableInfo.name) ~
- ("Update" -> accumulableInfo.update.map(new
JString(_)).getOrElse(JNothing)) ~
- ("Value" -> accumulableInfo.value) ~
- ("Internal" -> accumulableInfo.internal)
+ ("Name" -> name) ~
+ ("Update" -> accumulableInfo.update.map { v => accumValueToJson(name,
v) }) ~
+ ("Value" -> accumulableInfo.value.map { v => accumValueToJson(name, v)
}) ~
+ ("Internal" -> accumulableInfo.internal) ~
+ ("Count Failed Values" -> accumulableInfo.countFailedValues)
+ }
+
+ /**
+ * Serialize the value of an accumulator to JSON.
+ *
+ * For accmulators representing internal task metrics, this looks up the
relevant
+ * [[AccumulatorParam]] to serialize the value accordingly. For all
other accumulators,
+ * this will simply serialize the value as a string.
+ *
+ * The behavior here must match that of [[accumValueFromJson]]. TODO:
add some tests.
--- End diff --
I just added a test
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