From 28a848412c8239dfc6bd3e42dbbfe711e19bc8eb Mon Sep 17 00:00:00 2001
From: Wei-Chiu Chuang <weichiu@apache.org>
Date: Thu, 8 Aug 2019 13:46:31 -0700
Subject: [PATCH] HDFS-14701. Change Log Level to warn in SlotReleaser.
 Contributed by Lisheng Sun.

---
 .../hadoop/hdfs/shortcircuit/ShortCircuitCache.java      | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/shortcircuit/ShortCircuitCache.java b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/shortcircuit/ShortCircuitCache.java
index 5acac2fa024..d3eb3ac0da8 100644
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/shortcircuit/ShortCircuitCache.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/shortcircuit/ShortCircuitCache.java
@@ -202,10 +202,11 @@ public class ShortCircuitCache implements Closeable {
         LOG.trace("{}: released {}", this, slot);
         success = true;
       } catch (IOException e) {
-        LOG.error(ShortCircuitCache.this + ": failed to release " +
-            "short-circuit shared memory slot " + slot + " by sending " +
-            "ReleaseShortCircuitAccessRequestProto to " + path +
-            ".  Closing shared memory segment.", e);
+        LOG.warn(ShortCircuitCache.this + ": failed to release "
+            + "short-circuit shared memory slot " + slot + " by sending "
+            + "ReleaseShortCircuitAccessRequestProto to " + path
+            + ".  Closing shared memory segment. "
+            + "DataNode may have been stopped or restarted", e);
       } finally {
         if (success) {
           shmManager.freeSlot(slot);