From 61cda39e4eec00678706d96e90026455ecfc0a90 Mon Sep 17 00:00:00 2001
From: Steve Loughran <stevel@apache.org>
Date: Thu, 27 Apr 2017 12:19:04 +0100
Subject: [PATCH] HADOOP-14346. CryptoOutputStream throws IOException if stream
 is closed. Contributed by Pierre Lacave

(cherry picked from commit 40b9c30d64ee1b07ade423533e627a7d4b099261)
---
 .../java/org/apache/hadoop/crypto/CryptoOutputStream.java     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoOutputStream.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoOutputStream.java
index a771d96745..d2f146aa3e 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoOutputStream.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoOutputStream.java
@@ -252,7 +252,9 @@ public synchronized void close() throws IOException {
    */
   @Override
   public synchronized void flush() throws IOException {
-    checkStream();
+    if (closed) {
+      return;
+    }
     encrypt();
     super.flush();
   }