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Subject svn commit: r1551093 - in /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs: ./ src/main/java/org/apache/hadoop/hdfs/server/datanode/ src/main/java/org/apache/hadoop/hdfs/server/namenode/ src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/...
Date Mon, 16 Dec 2013 00:58:40 GMT
Author: arp
Date: Mon Dec 16 00:58:40 2013
New Revision: 1551093

URL: http://svn.apache.org/r1551093
Log:
HDFS-5406. Send incremental block reports for all storages in a single call.

Modified:
    hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
    hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
    hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
    hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java
    hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
    hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReport.java

Modified: hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt?rev=1551093&r1=1551092&r2=1551093&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt (original)
+++ hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt Mon Dec 16 00:58:40 2013
@@ -451,6 +451,9 @@ Trunk (Unreleased)
 
     HDFS-5626. dfsadmin -report shows incorrect cache values. (cmccabe)
 
+    HDFS-5406. Send incremental block reports for all storages in a
+    single call. (Arpit Agarwal)
+
   BREAKDOWN OF HDFS-2832 SUBTASKS AND RELATED JIRAS
 
     HDFS-4985. Add storage type to the protocol and expose it in block report

Modified: hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java?rev=1551093&r1=1551092&r2=1551093&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
(original)
+++ hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
Mon Dec 16 00:58:40 2013
@@ -22,6 +22,7 @@ import static org.apache.hadoop.util.Tim
 import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.net.SocketTimeoutException;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
@@ -273,7 +274,8 @@ class BPServiceActor implements Runnable
   private void reportReceivedDeletedBlocks() throws IOException {
 
     // Generate a list of the pending reports for each storage under the lock
-    Map<String, ReceivedDeletedBlockInfo[]> blockArrays = Maps.newHashMap();
+    ArrayList<StorageReceivedDeletedBlocks> reports =
+        new ArrayList<StorageReceivedDeletedBlocks>(pendingIncrementalBRperStorage.size());
     synchronized (pendingIncrementalBRperStorage) {
       for (Map.Entry<String, PerStoragePendingIncrementalBR> entry :
            pendingIncrementalBRperStorage.entrySet()) {
@@ -286,33 +288,34 @@ class BPServiceActor implements Runnable
           pendingReceivedRequests =
               (pendingReceivedRequests > rdbi.length ?
                   (pendingReceivedRequests - rdbi.length) : 0);
-          blockArrays.put(storageUuid, rdbi);
+          reports.add(new StorageReceivedDeletedBlocks(storageUuid, rdbi));
         }
       }
     }
 
+    if (reports.size() == 0) {
+      // Nothing new to report.
+      return;
+    }
+
     // Send incremental block reports to the Namenode outside the lock
-    for (Map.Entry<String, ReceivedDeletedBlockInfo[]> entry :
-         blockArrays.entrySet()) {
-      final String storageUuid = entry.getKey();
-      final ReceivedDeletedBlockInfo[] rdbi = entry.getValue();
-
-      StorageReceivedDeletedBlocks[] report = { new StorageReceivedDeletedBlocks(
-          storageUuid, rdbi) };
-      boolean success = false;
-      try {
-        bpNamenode.blockReceivedAndDeleted(bpRegistration,
-            bpos.getBlockPoolId(), report);
-        success = true;
-      } finally {
-        if (!success) {
-          synchronized (pendingIncrementalBRperStorage) {
+    boolean success = false;
+    try {
+      bpNamenode.blockReceivedAndDeleted(bpRegistration,
+          bpos.getBlockPoolId(),
+          reports.toArray(new StorageReceivedDeletedBlocks[reports.size()]));
+      success = true;
+    } finally {
+      if (!success) {
+        synchronized (pendingIncrementalBRperStorage) {
+          for (StorageReceivedDeletedBlocks report : reports) {
             // If we didn't succeed in sending the report, put all of the
             // blocks back onto our queue, but only in the case where we
             // didn't put something newer in the meantime.
             PerStoragePendingIncrementalBR perStorageMap =
-                pendingIncrementalBRperStorage.get(storageUuid);
-            pendingReceivedRequests += perStorageMap.putMissingBlockInfos(rdbi);
+                pendingIncrementalBRperStorage.get(report.getStorageID());
+            pendingReceivedRequests +=
+                perStorageMap.putMissingBlockInfos(report.getBlocks());
           }
         }
       }

Modified: hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java?rev=1551093&r1=1551092&r2=1551093&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
(original)
+++ hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
Mon Dec 16 00:58:40 2013
@@ -1006,6 +1006,7 @@ class NameNodeRpcServer implements Namen
   public void blockReceivedAndDeleted(DatanodeRegistration nodeReg, String poolId,
       StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks) throws IOException {
     verifyRequest(nodeReg);
+    metrics.incrBlockReceivedAndDeletedOps();
     if(blockStateChangeLog.isDebugEnabled()) {
       blockStateChangeLog.debug("*BLOCK* NameNode.blockReceivedAndDeleted: "
           +"from "+nodeReg+" "+receivedAndDeletedBlocks.length

Modified: hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java
URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java?rev=1551093&r1=1551092&r2=1551093&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java
(original)
+++ hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java
Mon Dec 16 00:58:40 2013
@@ -71,6 +71,8 @@ public class NameNodeMetrics {
   MutableCounterLong listSnapshottableDirOps;
   @Metric("Number of snapshotDiffReport operations")
   MutableCounterLong snapshotDiffReportOps;
+  @Metric("Number of blockReceivedAndDeleted calls")
+  MutableCounterLong blockReceivedAndDeletedOps;
 
   @Metric("Journal transactions") MutableRate transactions;
   @Metric("Journal syncs") MutableRate syncs;
@@ -209,6 +211,10 @@ public class NameNodeMetrics {
     snapshotDiffReportOps.incr();
   }
   
+  public void incrBlockReceivedAndDeletedOps() {
+    blockReceivedAndDeletedOps.incr();
+  }
+
   public void addTransaction(long latency) {
     transactions.add(latency);
   }

Modified: hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java?rev=1551093&r1=1551092&r2=1551093&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
(original)
+++ hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
Mon Dec 16 00:58:40 2013
@@ -2143,17 +2143,14 @@ public class MiniDFSCluster {
   }
 
   /**
-   * Get a storage directory for a datanode. There are two storage directories
-   * per datanode:
+   * Get a storage directory for a datanode.
    * <ol>
    * <li><base directory>/data/data<2*dnIndex + 1></li>
    * <li><base directory>/data/data<2*dnIndex + 2></li>
    * </ol>
    *
    * @param dnIndex datanode index (starts from 0)
-   * @param dirIndex directory index (0 or 1). Index 0 provides access to the
-   *          first storage directory. Index 1 provides access to the second
-   *          storage directory.
+   * @param dirIndex directory index.
    * @return Storage directory
    */
   public static File getStorageDir(int dnIndex, int dirIndex) {
@@ -2164,7 +2161,7 @@ public class MiniDFSCluster {
    * Calculate the DN instance-specific path for appending to the base dir
    * to determine the location of the storage of a DN instance in the mini cluster
    * @param dnIndex datanode index
-   * @param dirIndex directory index (0 or 1).
+   * @param dirIndex directory index.
    * @return
    */
   private static String getStorageDirPath(int dnIndex, int dirIndex) {

Modified: hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReport.java
URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReport.java?rev=1551093&r1=1551092&r2=1551093&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReport.java
(original)
+++ hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReport.java
Mon Dec 16 00:58:40 2013
@@ -71,7 +71,15 @@ import org.mockito.invocation.Invocation
 /**
  * This test simulates a variety of situations when blocks are being
  * intentionally corrupted, unexpectedly modified, and so on before a block
- * report is happening
+ * report is happening.
+ *
+ * For each test case it runs two variations:
+ *  #1 - For a given DN, the first variation sends block reports for all
+ *       storages in a single call to the NN.
+ *  #2 - For a given DN, the second variation sends block reports for each
+ *       storage in a separate call.
+ *
+ * The behavior should be the same in either variation.
  */
 public class TestBlockReport {
   public static final Log LOG = LogFactory.getLog(TestBlockReport.class);
@@ -158,14 +166,120 @@ public class TestBlockReport {
   }
 
   /**
+   * Utility routine to send block reports to the NN, either in a single call
+   * or reporting one storage per call.
+   *
+   * @param dnR
+   * @param poolId
+   * @param reports
+   * @param needtoSplit
+   * @throws IOException
+   */
+  private void sendBlockReports(DatanodeRegistration dnR, String poolId,
+      StorageBlockReport[] reports, boolean needtoSplit) throws IOException {
+    if (!needtoSplit) {
+      LOG.info("Sending combined block reports for " + dnR);
+      cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
+    } else {
+      for (StorageBlockReport report : reports) {
+        LOG.info("Sending block report for storage " + report.getStorage().getStorageID());
+        StorageBlockReport[] singletonReport = { report };
+        cluster.getNameNodeRpc().blockReport(dnR, poolId, singletonReport);
+      }
+    }
+  }
+
+  /**
+   * Test variations blockReport_01 through blockReport_09 with combined
+   * and split block reports.
+   */
+  @Test
+  public void blockReportCombined_01() throws IOException {
+    blockReport_01(false);
+  }
+
+  @Test
+  public void blockReportSplit_01() throws IOException {
+    blockReport_01(true);
+  }
+
+  @Test
+  public void blockReportCombined_02() throws IOException {
+    blockReport_02(false);
+  }
+
+  @Test
+  public void blockReportSplit_02() throws IOException {
+    blockReport_02(true);
+  }
+
+  @Test
+  public void blockReportCombined_03() throws IOException {
+    blockReport_03(false);
+  }
+
+  @Test
+  public void blockReportSplit_03() throws IOException {
+    blockReport_03(true);
+  }
+
+  @Test
+  public void blockReportCombined_04() throws IOException {
+    blockReport_04(false);
+  }
+
+  @Test
+  public void blockReportSplit_04() throws IOException {
+    blockReport_04(true);
+  }
+
+  @Test
+  public void blockReportCombined_06() throws Exception {
+    blockReport_06(false);
+  }
+
+  @Test
+  public void blockReportSplit_06() throws Exception {
+    blockReport_06(true);
+  }
+
+  @Test
+  public void blockReportCombined_07() throws Exception {
+    blockReport_07(false);
+  }
+
+  @Test
+  public void blockReportSplit_07() throws Exception {
+    blockReport_07(true);
+  }
+
+  @Test
+  public void blockReportCombined_08() throws Exception {
+    blockReport_08(false);
+  }
+
+  @Test
+  public void blockReportSplit_08() throws Exception {
+    blockReport_08(true);
+  }
+
+  @Test
+  public void blockReportCombined_09() throws Exception {
+    blockReport_09(false);
+  }
+
+  @Test
+  public void blockReportSplit_09() throws Exception {
+    blockReport_09(true);
+  }
+  /**
    * Test write a file, verifies and closes it. Then the length of the blocks
    * are messed up and BlockReport is forced.
    * The modification of blocks' length has to be ignored
    *
    * @throws java.io.IOException on an error
    */
-  @Test
-  public void blockReport_01() throws IOException {
+  private void blockReport_01(boolean splitBlockReports) throws IOException {
     final String METHOD_NAME = GenericTestUtils.getMethodName();
     Path filePath = new Path("/" + METHOD_NAME + ".dat");
 
@@ -198,7 +312,7 @@ public class TestBlockReport {
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
     StorageBlockReport[] reports = getBlockReports(dn, poolId, false, false);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
+    sendBlockReports(dnR, poolId, reports, splitBlockReports);
 
     List<LocatedBlock> blocksAfterReport =
       DFSTestUtil.getAllBlocks(fs.open(filePath));
@@ -224,8 +338,7 @@ public class TestBlockReport {
    *
    * @throws IOException in case of errors
    */
-  @Test
-  public void blockReport_02() throws IOException {
+  private void blockReport_02(boolean splitBlockReports) throws IOException {
     final String METHOD_NAME = GenericTestUtils.getMethodName();
     LOG.info("Running test " + METHOD_NAME);
 
@@ -280,7 +393,7 @@ public class TestBlockReport {
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn0.getDNRegistrationForBP(poolId);
     StorageBlockReport[] reports = getBlockReports(dn0, poolId, false, false);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
+    sendBlockReports(dnR, poolId, reports, splitBlockReports);
 
     BlockManagerTestUtil.getComputedDatanodeWork(cluster.getNamesystem()
         .getBlockManager());
@@ -301,8 +414,7 @@ public class TestBlockReport {
    *
    * @throws IOException in case of an error
    */
-  @Test
-  public void blockReport_03() throws IOException {
+  private void blockReport_03(boolean splitBlockReports) throws IOException {
     final String METHOD_NAME = GenericTestUtils.getMethodName();
     Path filePath = new Path("/" + METHOD_NAME + ".dat");
     ArrayList<Block> blocks = writeFile(METHOD_NAME, FILE_SIZE, filePath);
@@ -312,11 +424,7 @@ public class TestBlockReport {
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
     StorageBlockReport[] reports = getBlockReports(dn, poolId, true, false);
-    DatanodeCommand dnCmd =
-      cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
-    if(LOG.isDebugEnabled()) {
-      LOG.debug("Got the command: " + dnCmd);
-    }
+    sendBlockReports(dnR, poolId, reports, splitBlockReports);
     printStats();
 
     assertThat("Wrong number of corrupt blocks",
@@ -333,8 +441,7 @@ public class TestBlockReport {
    *
    * @throws IOException in case of an error
    */
-  @Test
-  public void blockReport_04() throws IOException {
+  private void blockReport_04(boolean splitBlockReports) throws IOException {
     final String METHOD_NAME = GenericTestUtils.getMethodName();
     Path filePath = new Path("/" + METHOD_NAME + ".dat");
     DFSTestUtil.createFile(fs, filePath,
@@ -352,11 +459,7 @@ public class TestBlockReport {
 
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
     StorageBlockReport[] reports = getBlockReports(dn, poolId, false, false);
-    DatanodeCommand dnCmd =
-        cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
-    if(LOG.isDebugEnabled()) {
-      LOG.debug("Got the command: " + dnCmd);
-    }
+    sendBlockReports(dnR, poolId, reports, splitBlockReports);
     printStats();
 
     assertThat("Wrong number of corrupt blocks",
@@ -373,8 +476,7 @@ public class TestBlockReport {
    *
    * @throws IOException in case of an error
    */
-  @Test
-  public void blockReport_06() throws Exception {
+  private void blockReport_06(boolean splitBlockReports) throws Exception {
     final String METHOD_NAME = GenericTestUtils.getMethodName();
     Path filePath = new Path("/" + METHOD_NAME + ".dat");
     final int DN_N1 = DN_N0 + 1;
@@ -387,7 +489,7 @@ public class TestBlockReport {
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
     StorageBlockReport[] reports = getBlockReports(dn, poolId, false, false);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
+    sendBlockReports(dnR, poolId, reports, splitBlockReports);
     printStats();
     assertEquals("Wrong number of PendingReplication Blocks",
       0, cluster.getNamesystem().getUnderReplicatedBlocks());
@@ -406,8 +508,7 @@ public class TestBlockReport {
    *
    * @throws IOException in case of an error
    */
-  @Test
-  public void blockReport_07() throws Exception {
+  private void blockReport_07(boolean splitBlockReports) throws Exception {
     final String METHOD_NAME = GenericTestUtils.getMethodName();
     Path filePath = new Path("/" + METHOD_NAME + ".dat");
     final int DN_N1 = DN_N0 + 1;
@@ -421,7 +522,7 @@ public class TestBlockReport {
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
     StorageBlockReport[] reports = getBlockReports(dn, poolId, true, false);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
+    sendBlockReports(dnR, poolId, reports, splitBlockReports);
     printStats();
 
     assertThat("Wrong number of corrupt blocks",
@@ -432,7 +533,7 @@ public class TestBlockReport {
                cluster.getNamesystem().getPendingReplicationBlocks(), is(0L));
 
     reports = getBlockReports(dn, poolId, true, true);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
+    sendBlockReports(dnR, poolId, reports, splitBlockReports);
     printStats();
 
     assertThat("Wrong number of corrupt blocks",
@@ -458,8 +559,7 @@ public class TestBlockReport {
    *
    * @throws IOException in case of an error
    */
-  @Test
-  public void blockReport_08() throws IOException {
+  private void blockReport_08(boolean splitBlockReports) throws IOException {
     final String METHOD_NAME = GenericTestUtils.getMethodName();
     Path filePath = new Path("/" + METHOD_NAME + ".dat");
     final int DN_N1 = DN_N0 + 1;
@@ -483,8 +583,8 @@ public class TestBlockReport {
       DataNode dn = cluster.getDataNodes().get(DN_N1);
       String poolId = cluster.getNamesystem().getBlockPoolId();
       DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
-      StorageBlockReport[] report = getBlockReports(dn, poolId, false, false);
-      cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
+      StorageBlockReport[] reports = getBlockReports(dn, poolId, false, false);
+      sendBlockReports(dnR, poolId, reports, splitBlockReports);
       printStats();
       assertEquals("Wrong number of PendingReplication blocks",
         blocks.size(), cluster.getNamesystem().getPendingReplicationBlocks());
@@ -500,8 +600,7 @@ public class TestBlockReport {
   // Similar to BlockReport_08 but corrupts GS and len of the TEMPORARY's
   // replica block. Expect the same behaviour: NN should simply ignore this
   // block
-  @Test
-  public void blockReport_09() throws IOException {
+  private void blockReport_09(boolean splitBlockReports) throws IOException {
     final String METHOD_NAME = GenericTestUtils.getMethodName();
     Path filePath = new Path("/" + METHOD_NAME + ".dat");
     final int DN_N1 = DN_N0 + 1;
@@ -526,8 +625,8 @@ public class TestBlockReport {
       DataNode dn = cluster.getDataNodes().get(DN_N1);
       String poolId = cluster.getNamesystem().getBlockPoolId();
       DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
-      StorageBlockReport[] report = getBlockReports(dn, poolId, true, true);
-      cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
+      StorageBlockReport[] reports = getBlockReports(dn, poolId, true, true);
+      sendBlockReports(dnR, poolId, reports, splitBlockReports);
       printStats();
       assertEquals("Wrong number of PendingReplication blocks",
         2, cluster.getNamesystem().getPendingReplicationBlocks());



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