From 5a174f8ac6e5f170b427b30bf72ef33f90c20d91 Mon Sep 17 00:00:00 2001
From: Steve Loughran <stevel@apache.org>
Date: Tue, 3 Apr 2018 16:31:34 +0100
Subject: [PATCH] HADOOP-14758. S3GuardTool.prune to handle
 UnsupportedOperationException. Contributed by Gabor Bota.

---
 .../java/org/apache/hadoop/fs/s3a/s3guard/S3GuardTool.java  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/s3guard/S3GuardTool.java b/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/s3guard/S3GuardTool.java
index e764021159..a9147ffc51 100644
--- a/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/s3guard/S3GuardTool.java
+++ b/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/s3guard/S3GuardTool.java
@@ -966,7 +966,11 @@ public int run(String[] args, PrintStream out) throws
       long now = System.currentTimeMillis();
       long divide = now - delta;
 
-      getStore().prune(divide);
+      try {
+        getStore().prune(divide);
+      } catch (UnsupportedOperationException e){
+        errorln("Prune operation not supported in metadata store.");
+      }
 
       out.flush();
       return SUCCESS;