goiri commented on a change in pull request #3635:
URL: https://github.com/apache/hadoop/pull/3635#discussion_r746873078
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File path:
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/CallerContext.java
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@@ -228,6 +228,26 @@ public Builder append(String key, String value) {
return this;
}
+ /**
+ * Append new field which contains key and value to the context
+ * if the key("key:") is absent.
+ * @param key the key of field.
+ * @param value the value of field.
+ * @return the builder.
+ */
+ public Builder appendIfAbsent(String key, String value) {
Review comment:
I would create a new one just for the commons side and once that's done,
rebase this one to do just the RBF part.
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