From 64ff30f360e52f63852150fa6fb2b9fdced9f6bf Mon Sep 17 00:00:00 2001
From: zzq09494 <zzq09494@ly.com>
Date: Tue, 26 Sep 2017 09:54:03 +0800
Subject: [PATCH] add check compressor's byte size when finish compress

---
 .../org/apache/hadoop/io/compress/BlockCompressorStream.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/BlockCompressorStream.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/BlockCompressorStream.java
index 434183bbc25..f2c26c190e2 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/BlockCompressorStream.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/BlockCompressorStream.java
@@ -135,7 +135,7 @@ public class BlockCompressorStream extends CompressorStream {
 
   @Override
   public void finish() throws IOException {
-    if (!compressor.finished()) {
+    if (!compressor.finished() && compressor.getBytesRead() > 0) {
       rawWriteInt((int)compressor.getBytesRead());
       compressor.finish();
       while (!compressor.finished()) {