HDFS-12872. EC Checksum broken when BlockAccessToken is enabled.

(cherry picked from commit 56b1ff80dd9fbcde8d21a604eff0babb3a16418f)

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/LocatedBlocks.java

@@ -192,6 +192,7 @@ public class LocatedBlocks {
         + "\n  underConstruction=" + underConstruction
         + "\n  blocks=" + blocks
         + "\n  lastLocatedBlock=" + lastLocatedBlock
-        + "\n  isLastBlockComplete=" + isLastBlockComplete + "}";
+        + "\n  isLastBlockComplete=" + isLastBlockComplete
+        + "\n  ecPolicy=" + ecPolicy + "}";
   }
 }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java

@@ -1378,12 +1378,11 @@ public class BlockManager implements BlockStatsMXBean {
               b.getStorageIDs());
         }
         sb.setBlockTokens(blockTokens);
-      } else {
-        b.setBlockToken(blockTokenSecretManager.generateToken(
-            NameNode.getRemoteUser().getShortUserName(),
-            b.getBlock(), EnumSet.of(mode), b.getStorageTypes(),
-            b.getStorageIDs()));
       }
+      b.setBlockToken(blockTokenSecretManager.generateToken(
+          NameNode.getRemoteUser().getShortUserName(),
+          b.getBlock(), EnumSet.of(mode), b.getStorageTypes(),
+          b.getStorageIDs()));
     }
   }
 

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

@@ -26,6 +26,7 @@ import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy;
 import org.apache.hadoop.hdfs.protocol.LocatedBlock;
 import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
 import org.apache.hadoop.hdfs.server.datanode.DataNode;
+import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
@@ -33,8 +34,12 @@ import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
+import org.slf4j.event.Level;
 
 import java.io.IOException;
+import java.util.Random;
+
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY;
 
 /**
  * This test serves a prototype to demo the idea proposed so far. It creates two
@@ -77,6 +82,7 @@ public class TestFileChecksum {
     conf.setBoolean(DFSConfigKeys.DFS_NAMENODE_REDUNDANCY_CONSIDERLOAD_KEY,
         false);
     conf.setInt(DFSConfigKeys.DFS_NAMENODE_REPLICATION_MAX_STREAMS_KEY, 0);
+    conf.setBoolean(DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY, true);
     cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDNs).build();
     Path ecPath = new Path(ecDir);
     cluster.getFileSystem().mkdir(ecPath, FsPermission.getDirDefault());
@@ -89,6 +95,7 @@ public class TestFileChecksum {
     bytesPerCRC = conf.getInt(
         HdfsClientConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY,
         HdfsClientConfigKeys.DFS_BYTES_PER_CHECKSUM_DEFAULT);
+    GenericTestUtils.setLogLevel(FileChecksumHelper.LOG, Level.DEBUG);
   }
 
   @After
@@ -518,7 +525,7 @@ public class TestFileChecksum {
 
     LocatedBlock locatedBlock = locatedBlocks.get(0);
     DatanodeInfo[] datanodes = locatedBlock.getLocations();
-    DatanodeInfo chosenDn = datanodes[0];
+    DatanodeInfo chosenDn = datanodes[new Random().nextInt(datanodes.length)];
 
     int idx = 0;
     for (DataNode dn : cluster.getDataNodes()) {