HDFS-11124. Report blockIds of internal blocks for EC files in Fsck. Contributed by Takanobu Asanuma.

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

@@ -244,14 +244,22 @@ public class BlockInfoStriped extends BlockInfo {
     return true;
   }
 
-  static class StorageAndBlockIndex {
-    final DatanodeStorageInfo storage;
-    final byte blockIndex;
+  public static class StorageAndBlockIndex {
+    private final DatanodeStorageInfo storage;
+    private final byte blockIndex;
 
     StorageAndBlockIndex(DatanodeStorageInfo storage, byte blockIndex) {
       this.storage = storage;
       this.blockIndex = blockIndex;
     }
+
+    public DatanodeStorageInfo getStorage() {
+      return storage;
+    }
+
+    public byte getBlockIndex() {
+      return blockIndex;
+    }
   }
 
   public Iterable<StorageAndBlockIndex> getStorageAndIndexInfos() {

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

@@ -3903,10 +3903,10 @@ public class BlockManager implements BlockStatsMXBean {
     BitSet bitSet = new BitSet(block.getTotalBlockNum());
     for (StorageAndBlockIndex si : block.getStorageAndIndexInfos()) {
       StoredReplicaState state = checkReplicaOnStorage(counters, block,
-          si.storage, nodesCorrupt, inStartupSafeMode);
+          si.getStorage(), nodesCorrupt, inStartupSafeMode);
       if (state == StoredReplicaState.LIVE) {
-        if (!bitSet.get(si.blockIndex)) {
-          bitSet.set(si.blockIndex);
+        if (!bitSet.get(si.getBlockIndex())) {
+          bitSet.set(si.getBlockIndex());
         } else {
           counters.subtract(StoredReplicaState.LIVE, 1);
           counters.add(StoredReplicaState.REDUNDANT, 1);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeFsck.java

@@ -28,6 +28,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Date;
+import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
@@ -67,6 +68,7 @@ import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
 import org.apache.hadoop.hdfs.security.token.block.DataEncryptionKey;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped;
+import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped.StorageAndBlockIndex;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicies;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatus;
@@ -591,9 +593,23 @@ public class NamenodeFsck implements DataEncryptionKeyFactory {
         blockManager.getStorages(storedBlock) :
         storedBlock.getUnderConstructionFeature().getExpectedStorageLocations();
     StringBuilder sb = new StringBuilder(" [");
+    final boolean isStriped = storedBlock.isStriped();
+    Map<DatanodeStorageInfo, Long> storage2Id = new HashMap<>();
+    if (isStriped && isComplete) {
+      long blockId = storedBlock.getBlockId();
+      Iterable<StorageAndBlockIndex> sis =
+          ((BlockInfoStriped)storedBlock).getStorageAndIndexInfos();
+      for (StorageAndBlockIndex si: sis){
+        storage2Id.put(si.getStorage(), blockId + si.getBlockIndex());
+      }
+    }
 
     for (int i = 0; i < storages.length; i++) {
       DatanodeStorageInfo storage = storages[i];
+      if (isStriped && isComplete) {
+        long index = storage2Id.get(storage);
+        sb.append("blk_" + index + ":");
+      }
       DatanodeDescriptor dnDesc = storage.getDatanodeDescriptor();
       if (showRacks) {
         sb.append(NodeBase.getPath(dnDesc));

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFsck.java

@@ -677,16 +677,16 @@ public class TestFsck {
     conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L);
     ErasureCodingPolicy ecPolicy =
         ErasureCodingPolicyManager.getSystemDefaultPolicy();
-    int numAllUnits = ecPolicy.getNumDataUnits() + ecPolicy.getNumParityUnits();
+    final int dataBlocks = ecPolicy.getNumDataUnits();
+    final int cellSize = ecPolicy.getCellSize();
+    final int numAllUnits = dataBlocks + ecPolicy.getNumParityUnits();
+    int blockSize = 2 * cellSize;
+    conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
     cluster = new MiniDFSCluster.Builder(conf).numDataNodes(
         numAllUnits + 1).build();
-    FileSystem fs = null;
     String topDir = "/myDir";
-    byte[] randomBytes = new byte[3000000];
-    int seed = 42;
-    new Random(seed).nextBytes(randomBytes);
     cluster.waitActive();
-    fs = cluster.getFileSystem();
+    DistributedFileSystem fs = cluster.getFileSystem();
     util.createFiles(fs, topDir);
     // set topDir to EC when it has replicated files
     cluster.getFileSystem().getClient().setErasureCodingPolicy(
@@ -697,11 +697,12 @@ public class TestFsck {
     // Open a EC file for writing and do not close for now
     Path openFile = new Path(topDir + "/openECFile");
     FSDataOutputStream out = fs.create(openFile);
-    int writeCount = 0;
-    while (writeCount != 300) {
-      out.write(randomBytes);
-      writeCount++;
-    }
+    int blockGroupSize = dataBlocks * blockSize;
+    // data size is more than 1 block group and less than 2 block groups
+    byte[] randomBytes = new byte[2 * blockGroupSize - cellSize];
+    int seed = 42;
+    new Random(seed).nextBytes(randomBytes);
+    out.write(randomBytes);
 
     // make sure the fsck can correctly handle mixed ec/replicated files
     runFsck(conf, 0, true, topDir, "-files", "-blocks", "-openforwrite");
@@ -723,6 +724,27 @@ public class TestFsck {
     assertTrue(outStr.contains("Expected_repl=" + numAllUnits));
     assertTrue(outStr.contains("Under Construction Block:"));
 
+    // check reported blockIDs of internal blocks
+    LocatedStripedBlock lsb = (LocatedStripedBlock)fs.getClient()
+        .getLocatedBlocks(openFile.toString(), 0, cellSize * dataBlocks).get(0);
+    long groupId = lsb.getBlock().getBlockId();
+    byte[] indices = lsb.getBlockIndices();
+    DatanodeInfo[] locs = lsb.getLocations();
+    long blockId;
+    for (int i = 0; i < indices.length; i++) {
+      blockId = groupId + indices[i];
+      String str = "blk_" + blockId + ":" + locs[i];
+      assertTrue(outStr.contains(str));
+    }
+
+    // check the output of under-constructed blocks doesn't include the blockIDs
+    String regex = ".*Expected_repl=" + numAllUnits + "(.*)\nStatus:.*";
+    Pattern p = Pattern.compile(regex, Pattern.DOTALL);
+    Matcher m = p.matcher(outStr);
+    assertTrue(m.find());
+    String ucBlockOutput = m.group(1);
+    assertFalse(ucBlockOutput.contains("blk_"));
+
     // Close the file
     out.close();