Revert "HADOOP-12700. Remove unused import in TestCompressorDecompressor.java. Contributed by John Zhuge."

This reverts commit b3fa190297cf81d909adb2aeca2868b4fc77c9e9.

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -925,9 +925,6 @@ Release 2.8.0 - UNRELEASED
     HADOOP-12603. TestSymlinkLocalFSFileContext#testSetTimesSymlinkToDir
     occasionally fail. (Wei-Chiu Chuang via cnauroth)
 
-    HADOOP-12700. Remove unused import in TestCompressorDecompressor.java.
-    (John Zhuge via aajisaka)
-
 Release 2.7.3 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/compress/TestCompressorDecompressor.java

@@ -17,6 +17,7 @@
  */
 package org.apache.hadoop.io.compress;
 
+import static org.junit.Assert.fail;
 import java.util.Random;
 import org.apache.hadoop.io.compress.CompressDecompressTester.CompressionTestStrategy;
 import org.apache.hadoop.io.compress.lz4.Lz4Compressor;