diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index 1031a5ac905..59a27d6cd9d 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -697,6 +697,9 @@ Release 0.23.3 - UNRELEASED
     MAPREDUCE-3506. Calling getPriority on JobInfo after parsing a history log
     with JobHistoryParser throws a NullPointerException (Jason Lowe via bobby)
 
+    MAPREDUCE-4570. ProcfsBasedProcessTree#constructProcessInfo() prints a
+    warning if procfsDir/<pid>/stat is not found. (Ahmed Radwan via bobby)
+
 Release 0.23.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcfsBasedProcessTree.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcfsBasedProcessTree.java
index 1d02ca55594..583e95d8d10 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcfsBasedProcessTree.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcfsBasedProcessTree.java
@@ -512,7 +512,7 @@ public class ProcfsBasedProcessTree extends ProcessTree {
       in = new BufferedReader(fReader);
     } catch (FileNotFoundException f) {
       // The process vanished in the interim!
-      LOG.warn("The process " + pinfo.getPid()
+      LOG.info("The process " + pinfo.getPid()
           + " may have finished in the interim.");
       return ret;
     }
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/ProcfsBasedProcessTree.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/ProcfsBasedProcessTree.java
index db65ad20cb8..ca0f7e4c907 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/ProcfsBasedProcessTree.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/ProcfsBasedProcessTree.java
@@ -410,7 +410,7 @@ public class ProcfsBasedProcessTree {
       in = new BufferedReader(fReader);
     } catch (FileNotFoundException f) {
       // The process vanished in the interim!
-      LOG.warn("The process " + pinfo.getPid()
+      LOG.info("The process " + pinfo.getPid()
           + " may have finished in the interim.");
       return ret;
     }