LuciferYang commented on code in PR #46193:
URL: https://github.com/apache/spark/pull/46193#discussion_r1577167593
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common/utils/src/test/scala/org/apache/spark/util/StructuredLoggingSuite.scala:
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@@ -144,6 +146,22 @@ trait LoggingSuiteBase
}
}
+ // An enumeration value that is not defined in `LogKey`, you can define it
anywhere
+ private val externalLogKey = LogKey.VALUE
+ private val externalLog = log"${MDC(externalLogKey, "External log
message.")}"
+ test("Logging with external LogKey") {
Review Comment:
In https://github.com/apache/spark/pull/46186/files, I try to relax the type
of `MDC.key` to `Enumeration#Value`, which allows us to extend the use of other
enumeration types as `MDC.key` to enhance a bit of extensibility.
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