HDFS-16086. Add volume information to datanode log for tracing (#3136)

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

@@ -33,6 +33,7 @@ import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.hdfs.protocol.BlockListAsLongs.BlockReportReplica;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
 import org.apache.hadoop.hdfs.server.datanode.Replica;
+import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
 import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.protobuf.ByteString;
@@ -523,6 +524,7 @@ public abstract class BlockListAsLongs implements Iterable<BlockReportReplica> {
   @InterfaceAudience.Private
   public static class BlockReportReplica extends Block implements Replica {
     private ReplicaState state;
+
     private BlockReportReplica() {
     }
     public BlockReportReplica(Block block) {
@@ -557,6 +559,10 @@ public abstract class BlockListAsLongs implements Iterable<BlockReportReplica> {
       throw new UnsupportedOperationException();
     }
     @Override
+    public FsVolumeSpi getVolume() {
+      throw new UnsupportedOperationException();
+    }
+    @Override
     public boolean equals(Object o) {
       return super.equals(o);
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockReceiver.java

@@ -1551,11 +1551,12 @@ class BlockReceiver implements Closeable {
         DatanodeRegistration dnR = datanode.getDNRegistrationForBP(block
             .getBlockPoolId());
         ClientTraceLog.info(String.format(DN_CLIENTTRACE_FORMAT, inAddr,
-            myAddr, block.getNumBytes(), "HDFS_WRITE", clientname, offset,
-            dnR.getDatanodeUuid(), block, endTime - startTime));
+            myAddr, replicaInfo.getVolume(), block.getNumBytes(),
+            "HDFS_WRITE", clientname, offset, dnR.getDatanodeUuid(),
+            block, endTime - startTime));
       } else {
-        LOG.info("Received " + block + " size " + block.getNumBytes()
-            + " from " + inAddr);
+        LOG.info("Received " + block + " on volume "  + replicaInfo.getVolume()
+            + " size " + block.getNumBytes() + " from " + inAddr);
       }
     }
     

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java

@@ -268,6 +268,7 @@ public class DataNode extends ReconfigurableBase
   public static final String DN_CLIENTTRACE_FORMAT =
         "src: %s" +      // src IP
         ", dest: %s" +   // dst IP
+        ", volume: %s" + // volume
         ", bytes: %s" +  // byte count
         ", op: %s" +     // operation
         ", cliID: %s" +  // DFSClient id

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataXceiver.java

@@ -587,7 +587,7 @@ class DataXceiver extends Receiver implements Runnable {
     final String clientTraceFmt =
       clientName.length() > 0 && ClientTraceLog.isInfoEnabled()
         ? String.format(DN_CLIENTTRACE_FORMAT, localAddress, remoteAddress,
-            "%d", "HDFS_READ", clientName, "%d",
+            "", "%d", "HDFS_READ", clientName, "%d",
             dnR.getDatanodeUuid(), block, "%d")
         : dnR + " Served block " + block + " to " +
             remoteAddress;
@@ -929,8 +929,9 @@ class DataXceiver extends Receiver implements Runnable {
       if (isDatanode ||
           stage == BlockConstructionStage.PIPELINE_CLOSE_RECOVERY) {
         datanode.closeBlock(block, null, storageUuid, isOnTransientStorage);
-        LOG.info("Received {} src: {} dest: {} of size {}",
-            block, remoteAddress, localAddress, block.getNumBytes());
+        LOG.info("Received {} src: {} dest: {} volume: {} of size {}",
+            block, remoteAddress, localAddress, replica.getVolume(),
+            block.getNumBytes());
       }
 
       if(isClient) {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/Replica.java

@@ -19,6 +19,7 @@ package org.apache.hadoop.hdfs.server.datanode;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
+import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
 
 /** 
  * This represents block replicas which are stored in DataNode.
@@ -64,4 +65,10 @@ public interface Replica {
    * Return true if the target volume is backed by RAM.
    */
   public boolean isOnTransientStorage();
+
+  /**
+   * Get the volume of replica.
+   * @return the volume of replica
+   */
+  public FsVolumeSpi getVolume();
 }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetAsyncDiskService.java

@@ -232,7 +232,8 @@ class FsDatasetAsyncDiskService {
   void deleteAsync(FsVolumeReference volumeRef, ReplicaInfo replicaToDelete,
       ExtendedBlock block, String trashDirectory) {
     LOG.info("Scheduling " + block.getLocalBlock()
-        + " replica " + replicaToDelete + " for deletion");
+        + " replica " + replicaToDelete + " on volume " +
+        replicaToDelete.getVolume() + " for deletion");
     ReplicaFileDeleteTask deletionTask = new ReplicaFileDeleteTask(
         volumeRef, replicaToDelete, block, trashDirectory);
     execute(((FsVolumeImpl) volumeRef.getVolume()), deletionTask);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java

@@ -1129,6 +1129,8 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
       }
     }
     try {
+      LOG.debug("moving block {} from {} to {}", block,
+            replicaInfo.getVolume(), volumeRef.getVolume());
       moveBlock(block, replicaInfo, volumeRef, useVolumeOnSameMount);
       datanode.getMetrics().incrReplaceBlockOpOnSameHost();
       if (useVolumeOnSameMount) {
@@ -1631,6 +1633,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
       if (ref == null) {
         ref = volumes.getNextVolume(storageType, storageId, b.getNumBytes());
       }
+      LOG.debug("Creating Rbw, block: {} on volume: {}", b, ref.getVolume());
 
       FsVolumeImpl v = (FsVolumeImpl) ref.getVolume();
       // create an rbw file to hold block in the designated volume
@@ -1904,6 +1907,8 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
       ReplicaInPipeline newReplicaInfo;
       try {
         newReplicaInfo = v.createTemporary(b);
+        LOG.debug("creating temporary for block: {} on volume: {}",
+            b, ref.getVolume());
       } catch (IOException e) {
         IOUtils.cleanupWithLogger(null, ref);
         throw e;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/SimulatedFSDataset.java

@@ -416,6 +416,11 @@ public class SimulatedFSDataset implements FsDatasetSpi<FsVolumeSpi> {
       } while (deadLine > System.currentTimeMillis());
       throw new IOException("Minimum length was not achieved within timeout");
     }
+
+    @Override
+    public FsVolumeSpi getVolume() {
+      return getStorage(theBlock).getVolume();
+    }
   }
 
   /**

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/ExternalReplica.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.hdfs.server.datanode.extdataset;
 
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
 import org.apache.hadoop.hdfs.server.datanode.Replica;
+import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
 
 public class ExternalReplica implements Replica {
 
@@ -62,4 +63,9 @@ public class ExternalReplica implements Replica {
   public boolean isOnTransientStorage() {
     return false;
   }
+
+  @Override
+  public FsVolumeSpi getVolume() {
+    return null;
+  }
 }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/ExternalReplicaInPipeline.java

@@ -26,6 +26,7 @@ import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
 import org.apache.hadoop.hdfs.server.datanode.ChunkChecksum;
 import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
 import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
+import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
 import org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams;
 import org.apache.hadoop.util.DataChecksum;
 
@@ -135,4 +136,9 @@ public class ExternalReplicaInPipeline implements ReplicaInPipeline {
   public void waitForMinLength(long minLength, long time, TimeUnit unit)
       throws IOException {
   }
+
+  @Override
+  public FsVolumeSpi getVolume() {
+    return null;
+  }
 }