HDFS-10333. Intermittent org.apache.hadoop.hdfs.TestFileAppend failure in trunk. Contributed by Yiqun Lin.

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

@@ -38,6 +38,7 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.HardLink;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hdfs.MiniDFSCluster.DataNodeProperties;
+import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
 import org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException;
 import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
 import org.apache.hadoop.hdfs.protocol.LocatedBlock;
@@ -371,6 +372,9 @@ public class TestFileAppend{
     final Configuration conf = new HdfsConfiguration();
     conf.setInt(
         DFSConfigKeys.DFS_NAMENODE_FILE_CLOSE_NUM_COMMITTED_ALLOWED_KEY, 1);
+    conf.setBoolean(
+        HdfsClientConfigKeys.BlockWrite.ReplaceDatanodeOnFailure.ENABLE_KEY,
+        false);
 
     final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
         .numDataNodes(4).build();