diff --git a/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml b/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
index 51e2df48317..d2380479747 100644
--- a/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
+++ b/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
@@ -1085,6 +1085,17 @@
+
+ ipc.maximum.data.length
+ 67108864
+ This indicates the maximum IPC message length (bytes) that can be
+ accepted by the server. Messages larger than this value are rejected by
+ server immediately. This setting should rarely need to be changed. It merits
+ investigating whether the cause of long RPC messages can be fixed instead,
+ e.g. by splitting into smaller messages.
+
+
+