HDFS-6059. TestBlockReaderLocal fails if native library not available (ajisakaa via cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1574998 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -700,6 +700,9 @@ Release 2.4.0 - UNRELEASED
 
     HDFS-6062. TestRetryCacheWithHA#testConcat is flaky. (Jing Zhao via wheat9)
 
+    HDFS-6059. TestBlockReaderLocal fails if native library is not available.
+    (Akira AJISAKA via Colin Patrick McCabe)
+
   BREAKDOWN OF HDFS-5698 SUBTASKS AND RELATED JIRAS
 
     HDFS-5717. Save FSImage header in protobuf. (Haohui Mai via jing9)

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestBlockReaderLocal.java

@@ -47,6 +47,8 @@ import org.junit.Assume;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
+import static org.hamcrest.CoreMatchers.equalTo;
+
 public class TestBlockReaderLocal {
   private static TemporarySocketDirectory sockDir;
   
@@ -117,6 +119,7 @@ public class TestBlockReaderLocal {
   
   public void runBlockReaderLocalTest(BlockReaderLocalTest test,
       boolean checksum, long readahead) throws IOException {
+    Assume.assumeThat(DomainSocket.getLoadingFailureReason(), equalTo(null));
     MiniDFSCluster cluster = null;
     HdfsConfiguration conf = new HdfsConfiguration();
     conf.setBoolean(DFSConfigKeys.