viirya commented on a change in pull request #3377:
URL: https://github.com/apache/hadoop/pull/3377#discussion_r702042355



##########
File path: 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/zlib/BuiltInGzipCompressor.java
##########
@@ -86,10 +86,6 @@ public int compress(byte[] b, int off, int len) throws 
IOException {
 
     int compressedBytesWritten = 0;
 
-    if (currentBufLen <= 0) {
-      return compressedBytesWritten;
-    }
-

Review comment:
       i see. let me add one then.




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