HDFS-9198. Coalesce IBR processing in the NN. (Daryn Sharp via umamahesh)
(cherry picked from commit f741476146)
This commit is contained in:
Uma Mahesh
parent
93c483889c
commit
e6dc6f24a2
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@ -1586,6 +1586,8 @@ Release 2.8.0 - UNRELEASED
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HDFS-9429. Tests in TestDFSAdminWithHA intermittently fail with
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EOFException (Xiao Chen via Colin P. McCabe)
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HDFS-9198. Coalesce IBR processing in the NN. (Daryn Sharp via umamahesh)
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Release 2.7.3 - UNRELEASED
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INCOMPATIBLE CHANGES
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@ -34,6 +34,11 @@
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import java.util.Queue;
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import java.util.Set;
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import java.util.TreeSet;
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import java.util.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.FutureTask;
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import java.util.concurrent.ThreadLocalRandom;
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import java.util.concurrent.atomic.AtomicLong;
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@ -90,6 +95,7 @@
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import org.apache.hadoop.net.Node;
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import org.apache.hadoop.security.UserGroupInformation;
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import org.apache.hadoop.util.Daemon;
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import org.apache.hadoop.util.ExitUtil;
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import org.apache.hadoop.util.LightWeightGSet;
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import org.apache.hadoop.util.Time;
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@ -186,6 +192,10 @@ public int getPendingDataNodeMessageCount() {
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/** Replication thread. */
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final Daemon replicationThread = new Daemon(new ReplicationMonitor());
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/** Block report thread for handling async reports. */
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private final BlockReportProcessingThread blockReportThread =
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new BlockReportProcessingThread();
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/** Store blocks -> datanodedescriptor(s) map of corrupt replicas */
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final CorruptReplicasMap corruptReplicas = new CorruptReplicasMap();
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@ -470,13 +480,16 @@ public void activate(Configuration conf) {
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datanodeManager.activate(conf);
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this.replicationThread.setName("ReplicationMonitor");
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this.replicationThread.start();
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this.blockReportThread.start();
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mxBeanName = MBeans.register("NameNode", "BlockStats", this);
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}
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public void close() {
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try {
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replicationThread.interrupt();
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blockReportThread.interrupt();
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replicationThread.join(3000);
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blockReportThread.join(3000);
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} catch (InterruptedException ie) {
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}
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datanodeManager.close();
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@ -1805,7 +1818,7 @@ public boolean processReport(final DatanodeID nodeID,
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try {
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node = datanodeManager.getDatanode(nodeID);
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if (node == null || !node.isAlive()) {
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if (node == null || !node.isRegistered()) {
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throw new IOException(
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"ProcessReport from dead or unregistered node: " + nodeID);
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}
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@ -3157,17 +3170,23 @@ private void processAndHandleReportedBlock(
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public void processIncrementalBlockReport(final DatanodeID nodeID,
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final StorageReceivedDeletedBlocks srdb) throws IOException {
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assert namesystem.hasWriteLock();
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int received = 0;
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int deleted = 0;
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int receiving = 0;
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final DatanodeDescriptor node = datanodeManager.getDatanode(nodeID);
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if (node == null || !node.isAlive()) {
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if (node == null || !node.isRegistered()) {
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blockLog.warn("BLOCK* processIncrementalBlockReport"
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+ " is received from dead or unregistered node {}", nodeID);
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throw new IOException(
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"Got incremental block report from unregistered or dead node");
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}
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try {
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processIncrementalBlockReport(node, srdb);
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} catch (Exception ex) {
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node.setForceRegistration(true);
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throw ex;
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}
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}
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private void processIncrementalBlockReport(final DatanodeDescriptor node,
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final StorageReceivedDeletedBlocks srdb) throws IOException {
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DatanodeStorageInfo storageInfo =
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node.getStorageInfo(srdb.getStorage().getStorageID());
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if (storageInfo == null) {
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@ -3179,6 +3198,10 @@ public void processIncrementalBlockReport(final DatanodeID nodeID,
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storageInfo = node.updateStorage(srdb.getStorage());
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}
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int received = 0;
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int deleted = 0;
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int receiving = 0;
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for (ReceivedDeletedBlockInfo rdbi : srdb.getBlocks()) {
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switch (rdbi.getStatus()) {
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case DELETED_BLOCK:
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@ -3196,17 +3219,17 @@ public void processIncrementalBlockReport(final DatanodeID nodeID,
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break;
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default:
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String msg =
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"Unknown block status code reported by " + nodeID +
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"Unknown block status code reported by " + node +
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": " + rdbi;
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blockLog.warn(msg);
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assert false : msg; // if assertions are enabled, throw.
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break;
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}
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blockLog.debug("BLOCK* block {}: {} is received from {}",
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rdbi.getStatus(), rdbi.getBlock(), nodeID);
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rdbi.getStatus(), rdbi.getBlock(), node);
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}
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blockLog.debug("*BLOCK* NameNode.processIncrementalBlockReport: from "
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+ "{} receiving: {}, received: {}, deleted: {}", nodeID, receiving,
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+ "{} receiving: {}, received: {}, deleted: {}", node, receiving,
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received, deleted);
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}
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@ -3807,4 +3830,119 @@ private boolean isInRollBackMode(HdfsServerConstants.StartupOption option) {
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return false;
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}
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// async processing of an action, used for IBRs.
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public void enqueueBlockOp(final Runnable action) throws IOException {
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try {
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blockReportThread.enqueue(action);
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} catch (InterruptedException ie) {
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throw new IOException(ie);
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}
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}
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// sync batch processing for a full BR.
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public <T> T runBlockOp(final Callable<T> action)
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throws IOException {
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final FutureTask<T> future = new FutureTask<T>(action);
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enqueueBlockOp(future);
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try {
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return future.get();
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} catch (ExecutionException ee) {
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Throwable cause = ee.getCause();
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if (cause == null) {
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cause = ee;
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}
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if (!(cause instanceof IOException)) {
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cause = new IOException(cause);
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}
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throw (IOException)cause;
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} catch (InterruptedException ie) {
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Thread.currentThread().interrupt();
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throw new IOException(ie);
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}
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}
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@VisibleForTesting
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public void flushBlockOps() throws IOException {
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runBlockOp(new Callable<Void>(){
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@Override
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public Void call() {
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return null;
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}
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});
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}
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public int getBlockOpQueueLength() {
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return blockReportThread.queue.size();
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}
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private class BlockReportProcessingThread extends Thread {
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private static final long MAX_LOCK_HOLD_MS = 4;
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private long lastFull = 0;
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private final BlockingQueue<Runnable> queue =
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new ArrayBlockingQueue<Runnable>(1024);
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BlockReportProcessingThread() {
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super("Block report processor");
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setDaemon(true);
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}
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@Override
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public void run() {
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try {
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processQueue();
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} catch (Throwable t) {
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ExitUtil.terminate(1,
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getName() + " encountered fatal exception: " + t);
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}
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}
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private void processQueue() {
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while (namesystem.isRunning()) {
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NameNodeMetrics metrics = NameNode.getNameNodeMetrics();
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try {
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Runnable action = queue.take();
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// batch as many operations in the write lock until the queue
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// runs dry, or the max lock hold is reached.
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int processed = 0;
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namesystem.writeLock();
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metrics.setBlockOpsQueued(queue.size() + 1);
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try {
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long start = Time.monotonicNow();
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do {
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processed++;
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action.run();
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if (Time.monotonicNow() - start > MAX_LOCK_HOLD_MS) {
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break;
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}
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action = queue.poll();
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} while (action != null);
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} finally {
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namesystem.writeUnlock();
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metrics.addBlockOpsBatched(processed - 1);
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}
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} catch (InterruptedException e) {
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// ignore unless thread was specifically interrupted.
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if (Thread.interrupted()) {
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break;
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}
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}
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}
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queue.clear();
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}
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void enqueue(Runnable action) throws InterruptedException {
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if (!queue.offer(action)) {
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if (!isAlive() && namesystem.isRunning()) {
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ExitUtil.terminate(1, getName()+" is not running");
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}
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long now = Time.monotonicNow();
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if (now - lastFull > 4000) {
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lastFull = now;
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LOG.info("Block report queue is full");
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}
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queue.put(action);
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}
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}
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}
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}
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@ -189,6 +189,7 @@ public Type getType() {
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// This is an optimization, because contains takes O(n) time on Arraylist
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private boolean isAlive = false;
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private boolean needKeyUpdate = false;
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private boolean forceRegistration = false;
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// A system administrator can tune the balancer bandwidth parameter
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// (dfs.balance.bandwidthPerSec) dynamically by calling
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@ -301,7 +302,8 @@ public DatanodeStorageInfo getStorageInfo(String storageID) {
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}
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}
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DatanodeStorageInfo[] getStorageInfos() {
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@VisibleForTesting
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public DatanodeStorageInfo[] getStorageInfos() {
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synchronized (storageMap) {
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final Collection<DatanodeStorageInfo> storages = storageMap.values();
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return storages.toArray(new DatanodeStorageInfo[storages.size()]);
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@ -824,6 +826,7 @@ public void updateRegInfo(DatanodeID nodeReg) {
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storage.setBlockReportCount(0);
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}
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heartbeatedSinceRegistration = false;
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forceRegistration = false;
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}
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/**
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@ -907,5 +910,13 @@ public boolean checkBlockReportReceived() {
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}
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return true;
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}
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public void setForceRegistration(boolean force) {
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forceRegistration = force;
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}
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public boolean isRegistered() {
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return isAlive() && !forceRegistration;
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}
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}
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@ -1343,7 +1343,7 @@ public DatanodeCommand[] handleHeartbeat(DatanodeRegistration nodeReg,
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throw new DisallowedDatanodeException(nodeinfo);
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}
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if (nodeinfo == null || !nodeinfo.isAlive()) {
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if (nodeinfo == null || !nodeinfo.isRegistered()) {
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return new DatanodeCommand[]{RegisterCommand.REGISTER};
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}
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@ -151,7 +151,7 @@ public void remove() {
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this.state = s.getState();
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}
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int getBlockReportCount() {
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public int getBlockReportCount() {
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return blockReportCount;
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}
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@ -934,7 +934,7 @@ public final void processCacheReport(final DatanodeID datanodeID,
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try {
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final DatanodeDescriptor datanode =
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blockManager.getDatanodeManager().getDatanode(datanodeID);
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if (datanode == null || !datanode.isAlive()) {
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if (datanode == null || !datanode.isRegistered()) {
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throw new IOException(
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"processCacheReport from dead or unregistered datanode: " +
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datanode);
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@ -36,6 +36,7 @@
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.Callable;
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import com.google.common.collect.Lists;
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@ -1358,9 +1359,9 @@ public HeartbeatResponse sendHeartbeat(DatanodeRegistration nodeReg,
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}
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@Override // DatanodeProtocol
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public DatanodeCommand blockReport(DatanodeRegistration nodeReg,
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String poolId, StorageBlockReport[] reports,
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BlockReportContext context) throws IOException {
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public DatanodeCommand blockReport(final DatanodeRegistration nodeReg,
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String poolId, final StorageBlockReport[] reports,
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final BlockReportContext context) throws IOException {
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checkNNStartup();
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verifyRequest(nodeReg);
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if(blockStateChangeLog.isDebugEnabled()) {
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@ -1376,8 +1377,14 @@ public DatanodeCommand blockReport(DatanodeRegistration nodeReg,
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// for the same node and storage, so the value returned by the last
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// call of this loop is the final updated value for noStaleStorage.
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//
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noStaleStorages = bm.processReport(nodeReg, reports[r].getStorage(),
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blocks, context, (r == reports.length - 1));
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final int index = r;
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noStaleStorages = bm.runBlockOp(new Callable<Boolean>() {
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@Override
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public Boolean call() throws IOException {
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return bm.processReport(nodeReg, reports[index].getStorage(),
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blocks, context, (index == reports.length - 1));
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}
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});
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metrics.incrStorageBlockReportOps();
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}
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BlockManagerFaultInjector.getInstance().
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@ -1407,8 +1414,9 @@ public DatanodeCommand cacheReport(DatanodeRegistration nodeReg,
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}
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@Override // DatanodeProtocol
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public void blockReceivedAndDeleted(DatanodeRegistration nodeReg, String poolId,
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StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks) throws IOException {
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public void blockReceivedAndDeleted(final DatanodeRegistration nodeReg,
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String poolId, StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks)
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throws IOException {
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checkNNStartup();
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verifyRequest(nodeReg);
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metrics.incrBlockReceivedAndDeletedOps();
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@ -1417,8 +1425,22 @@ public void blockReceivedAndDeleted(DatanodeRegistration nodeReg, String poolId,
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+"from "+nodeReg+" "+receivedAndDeletedBlocks.length
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+" blocks.");
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}
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for(StorageReceivedDeletedBlocks r : receivedAndDeletedBlocks) {
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final BlockManager bm = namesystem.getBlockManager();
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for (final StorageReceivedDeletedBlocks r : receivedAndDeletedBlocks) {
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bm.enqueueBlockOp(new Runnable() {
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@Override
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public void run() {
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try {
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namesystem.processIncrementalBlockReport(nodeReg, r);
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} catch (Exception ex) {
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// usually because the node is unregistered/dead. next heartbeat
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// will correct the problem
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blockStateChangeLog.error(
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"*BLOCK* NameNode.blockReceivedAndDeleted: "
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+ "failed from " + nodeReg + ": " + ex.getMessage());
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}
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}
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});
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}
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}
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|
|
|
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@ -76,6 +76,10 @@ public class NameNodeMetrics {
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MutableCounterLong blockReceivedAndDeletedOps;
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@Metric("Number of blockReports from individual storages")
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MutableCounterLong storageBlockReportOps;
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@Metric("Number of blockReports and blockReceivedAndDeleted queued")
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MutableGaugeInt blockOpsQueued;
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@Metric("Number of blockReports and blockReceivedAndDeleted batch processed")
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MutableCounterLong blockOpsBatched;
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@Metric("Number of file system operations")
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public long totalFileOps(){
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|
@ -267,6 +271,14 @@ public void incrStorageBlockReportOps() {
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storageBlockReportOps.incr();
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}
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public void setBlockOpsQueued(int size) {
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blockOpsQueued.set(size);
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}
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public void addBlockOpsBatched(int count) {
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blockOpsBatched.incr(count);
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}
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public void addTransaction(long latency) {
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transactions.add(latency);
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}
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|
|
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|
@ -20,21 +20,32 @@
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
|
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import org.apache.hadoop.conf.Configuration;
|
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import org.apache.hadoop.hdfs.client.BlockReportOptions;
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import org.apache.hadoop.hdfs.protocol.DatanodeID;
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import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
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import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
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import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType;
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor;
|
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager;
|
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo;
|
||||
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
|
||||
import org.apache.hadoop.hdfs.server.common.IncorrectVersionException;
|
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import org.apache.hadoop.hdfs.server.common.StorageInfo;
|
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import org.apache.hadoop.hdfs.server.datanode.DataNode;
|
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import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
|
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import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
|
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import org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter;
|
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import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
|
||||
import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
|
||||
import org.apache.hadoop.test.GenericTestUtils;
|
||||
import org.apache.hadoop.util.VersionInfo;
|
||||
import org.junit.Test;
|
||||
|
||||
import com.google.common.base.Supplier;
|
||||
|
||||
import java.net.InetSocketAddress;
|
||||
import java.security.Permission;
|
||||
import java.util.concurrent.TimeoutException;
|
||||
|
||||
import static org.junit.Assert.*;
|
||||
import static org.mockito.Mockito.doReturn;
|
||||
|
|
@ -308,4 +319,131 @@ public void testRegistrationWithDifferentSoftwareVersionsDuringUpgrade()
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
// IBRs are async operations to free up IPC handlers. This means the IBR
|
||||
// response will not contain non-IPC level exceptions - which in practice
|
||||
// should not occur other than dead/unregistered node which will trigger a
|
||||
// re-registration. If a non-IPC exception does occur, the safety net is
|
||||
// a forced re-registration on the next heartbeat.
|
||||
@Test(timeout=10000)
|
||||
public void testForcedRegistration() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
conf.setInt(DFSConfigKeys.DFS_NAMENODE_HANDLER_COUNT_KEY, 4);
|
||||
conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, Integer.MAX_VALUE);
|
||||
|
||||
final MiniDFSCluster cluster =
|
||||
new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
|
||||
cluster.waitActive();
|
||||
cluster.getHttpUri(0);
|
||||
FSNamesystem fsn = cluster.getNamesystem();
|
||||
String bpId = fsn.getBlockPoolId();
|
||||
|
||||
DataNode dn = cluster.getDataNodes().get(0);
|
||||
DatanodeDescriptor dnd =
|
||||
NameNodeAdapter.getDatanode(fsn, dn.getDatanodeId());
|
||||
DataNodeTestUtils.setHeartbeatsDisabledForTests(dn, true);
|
||||
DatanodeStorageInfo storage = dnd.getStorageInfos()[0];
|
||||
|
||||
// registration should not change after heartbeat.
|
||||
assertTrue(dnd.isRegistered());
|
||||
DatanodeRegistration lastReg = dn.getDNRegistrationForBP(bpId);
|
||||
waitForHeartbeat(dn, dnd);
|
||||
assertSame(lastReg, dn.getDNRegistrationForBP(bpId));
|
||||
|
||||
// force a re-registration on next heartbeat.
|
||||
dnd.setForceRegistration(true);
|
||||
assertFalse(dnd.isRegistered());
|
||||
waitForHeartbeat(dn, dnd);
|
||||
assertTrue(dnd.isRegistered());
|
||||
DatanodeRegistration newReg = dn.getDNRegistrationForBP(bpId);
|
||||
assertNotSame(lastReg, newReg);
|
||||
lastReg = newReg;
|
||||
|
||||
// registration should not change on subsequent heartbeats.
|
||||
waitForHeartbeat(dn, dnd);
|
||||
assertTrue(dnd.isRegistered());
|
||||
assertSame(lastReg, dn.getDNRegistrationForBP(bpId));
|
||||
assertTrue(waitForBlockReport(dn, dnd));
|
||||
assertTrue(dnd.isRegistered());
|
||||
assertSame(lastReg, dn.getDNRegistrationForBP(bpId));
|
||||
|
||||
// check that block report is not processed and registration didn't change.
|
||||
dnd.setForceRegistration(true);
|
||||
assertFalse(waitForBlockReport(dn, dnd));
|
||||
assertFalse(dnd.isRegistered());
|
||||
assertSame(lastReg, dn.getDNRegistrationForBP(bpId));
|
||||
|
||||
// heartbeat should trigger re-registration, and next block report should
|
||||
// not change registration.
|
||||
waitForHeartbeat(dn, dnd);
|
||||
assertTrue(dnd.isRegistered());
|
||||
newReg = dn.getDNRegistrationForBP(bpId);
|
||||
assertNotSame(lastReg, newReg);
|
||||
lastReg = newReg;
|
||||
assertTrue(waitForBlockReport(dn, dnd));
|
||||
assertTrue(dnd.isRegistered());
|
||||
assertSame(lastReg, dn.getDNRegistrationForBP(bpId));
|
||||
|
||||
// registration doesn't change.
|
||||
ExtendedBlock eb = new ExtendedBlock(bpId, 1234);
|
||||
dn.notifyNamenodeDeletedBlock(eb, storage.getStorageID());
|
||||
DataNodeTestUtils.triggerDeletionReport(dn);
|
||||
assertTrue(dnd.isRegistered());
|
||||
assertSame(lastReg, dn.getDNRegistrationForBP(bpId));
|
||||
|
||||
// a failed IBR will effectively unregister the node.
|
||||
boolean failed = false;
|
||||
try {
|
||||
// pass null to cause a failure since there aren't any easy failure
|
||||
// modes since it shouldn't happen.
|
||||
fsn.processIncrementalBlockReport(lastReg, null);
|
||||
} catch (NullPointerException npe) {
|
||||
failed = true;
|
||||
}
|
||||
assertTrue("didn't fail", failed);
|
||||
assertFalse(dnd.isRegistered());
|
||||
|
||||
// should remain unregistered until next heartbeat.
|
||||
dn.notifyNamenodeDeletedBlock(eb, storage.getStorageID());
|
||||
DataNodeTestUtils.triggerDeletionReport(dn);
|
||||
assertFalse(dnd.isRegistered());
|
||||
assertSame(lastReg, dn.getDNRegistrationForBP(bpId));
|
||||
waitForHeartbeat(dn, dnd);
|
||||
assertTrue(dnd.isRegistered());
|
||||
assertNotSame(lastReg, dn.getDNRegistrationForBP(bpId));
|
||||
}
|
||||
|
||||
private void waitForHeartbeat(final DataNode dn, final DatanodeDescriptor dnd)
|
||||
throws Exception {
|
||||
final long lastUpdate = dnd.getLastUpdateMonotonic();
|
||||
Thread.sleep(1);
|
||||
DataNodeTestUtils.setHeartbeatsDisabledForTests(dn, false);
|
||||
DataNodeTestUtils.triggerHeartbeat(dn);
|
||||
GenericTestUtils.waitFor(new Supplier<Boolean>() {
|
||||
@Override
|
||||
public Boolean get() {
|
||||
return lastUpdate != dnd.getLastUpdateMonotonic();
|
||||
}
|
||||
}, 10, 100000);
|
||||
DataNodeTestUtils.setHeartbeatsDisabledForTests(dn, true);
|
||||
}
|
||||
|
||||
private boolean waitForBlockReport(final DataNode dn,
|
||||
final DatanodeDescriptor dnd) throws Exception {
|
||||
final DatanodeStorageInfo storage = dnd.getStorageInfos()[0];
|
||||
final long lastCount = storage.getBlockReportCount();
|
||||
dn.triggerBlockReport(
|
||||
new BlockReportOptions.Factory().setIncremental(false).build());
|
||||
try {
|
||||
GenericTestUtils.waitFor(new Supplier<Boolean>() {
|
||||
@Override
|
||||
public Boolean get() {
|
||||
return lastCount != storage.getBlockReportCount();
|
||||
}
|
||||
}, 10, 100);
|
||||
} catch (TimeoutException te) {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
|
@ -18,6 +18,7 @@
|
|||
package org.apache.hadoop.hdfs.server.blockmanagement;
|
||||
|
||||
import static org.apache.hadoop.hdfs.server.common.HdfsServerConstants.BlockUCState.UNDER_CONSTRUCTION;
|
||||
import static org.apache.hadoop.test.MetricsAsserts.getMetrics;
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.Assert.assertFalse;
|
||||
import static org.junit.Assert.assertNotNull;
|
||||
|
|
@ -34,8 +35,20 @@
|
|||
import java.util.LinkedList;
|
||||
import java.util.List;
|
||||
import java.util.Map.Entry;
|
||||
import java.util.concurrent.BrokenBarrierException;
|
||||
import java.util.concurrent.Callable;
|
||||
import java.util.concurrent.CountDownLatch;
|
||||
import java.util.concurrent.CyclicBarrier;
|
||||
import java.util.concurrent.ExecutorService;
|
||||
import java.util.concurrent.Executors;
|
||||
import java.util.concurrent.Future;
|
||||
import java.util.concurrent.FutureTask;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
import java.util.concurrent.TimeoutException;
|
||||
import java.util.concurrent.atomic.AtomicBoolean;
|
||||
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.FSDataOutputStream;
|
||||
import org.apache.hadoop.fs.FileSystem;
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.fs.StorageType;
|
||||
|
|
@ -60,8 +73,12 @@
|
|||
import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
|
||||
import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
|
||||
import org.apache.hadoop.ipc.RemoteException;
|
||||
import org.apache.hadoop.metrics2.MetricsRecordBuilder;
|
||||
import org.apache.hadoop.net.NetworkTopology;
|
||||
import org.apache.hadoop.test.GenericTestUtils;
|
||||
import org.apache.hadoop.test.MetricsAsserts;
|
||||
import org.apache.log4j.Level;
|
||||
import org.apache.log4j.Logger;
|
||||
import org.junit.Assert;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
|
|
@ -831,4 +848,158 @@ public void testUseDelHint() {
|
|||
Assert.assertFalse(policyDefault.useDelHint(delHint, null, moreThan1Racks,
|
||||
null, excessTypes));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testBlockReportQueueing() throws Exception {
|
||||
Configuration conf = new HdfsConfiguration();
|
||||
final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build();
|
||||
try {
|
||||
cluster.waitActive();
|
||||
final FSNamesystem fsn = cluster.getNamesystem();
|
||||
final BlockManager bm = fsn.getBlockManager();
|
||||
final ExecutorService executor = Executors.newCachedThreadPool();
|
||||
|
||||
final CyclicBarrier startBarrier = new CyclicBarrier(2);
|
||||
final CountDownLatch endLatch = new CountDownLatch(3);
|
||||
|
||||
// create a task intended to block while processing, thus causing
|
||||
// the queue to backup. simulates how a full BR is processed.
|
||||
FutureTask<?> blockingOp = new FutureTask<Void>(
|
||||
new Callable<Void>(){
|
||||
@Override
|
||||
public Void call() throws IOException {
|
||||
return bm.runBlockOp(new Callable<Void>() {
|
||||
@Override
|
||||
public Void call()
|
||||
throws InterruptedException, BrokenBarrierException {
|
||||
// use a barrier to control the blocking.
|
||||
startBarrier.await();
|
||||
endLatch.countDown();
|
||||
return null;
|
||||
}
|
||||
});
|
||||
}
|
||||
});
|
||||
|
||||
// create an async task. simulates how an IBR is processed.
|
||||
Callable<?> asyncOp = new Callable<Void>(){
|
||||
@Override
|
||||
public Void call() throws IOException {
|
||||
bm.enqueueBlockOp(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
// use the latch to signal if the op has run.
|
||||
endLatch.countDown();
|
||||
}
|
||||
});
|
||||
return null;
|
||||
}
|
||||
};
|
||||
|
||||
// calling get forces its execution so we can test if it's blocked.
|
||||
Future<?> blockedFuture = executor.submit(blockingOp);
|
||||
boolean isBlocked = false;
|
||||
try {
|
||||
// wait 1s for the future to block. it should run instantaneously.
|
||||
blockedFuture.get(1, TimeUnit.SECONDS);
|
||||
} catch (TimeoutException te) {
|
||||
isBlocked = true;
|
||||
}
|
||||
assertTrue(isBlocked);
|
||||
|
||||
// should effectively return immediately since calls are queued.
|
||||
// however they should be backed up in the queue behind the blocking
|
||||
// operation.
|
||||
executor.submit(asyncOp).get(1, TimeUnit.SECONDS);
|
||||
executor.submit(asyncOp).get(1, TimeUnit.SECONDS);
|
||||
|
||||
// check the async calls are queued, and first is still blocked.
|
||||
assertEquals(2, bm.getBlockOpQueueLength());
|
||||
assertFalse(blockedFuture.isDone());
|
||||
|
||||
// unblock the queue, wait for last op to complete, check the blocked
|
||||
// call has returned
|
||||
startBarrier.await(1, TimeUnit.SECONDS);
|
||||
assertTrue(endLatch.await(1, TimeUnit.SECONDS));
|
||||
assertEquals(0, bm.getBlockOpQueueLength());
|
||||
assertTrue(blockingOp.isDone());
|
||||
} finally {
|
||||
cluster.shutdown();
|
||||
}
|
||||
}
|
||||
|
||||
// spam the block manager with IBRs to verify queuing is occurring.
|
||||
@Test
|
||||
public void testAsyncIBR() throws Exception {
|
||||
Logger.getRootLogger().setLevel(Level.WARN);
|
||||
|
||||
// will create files with many small blocks.
|
||||
final int blkSize = 4*1024;
|
||||
final int fileSize = blkSize * 100;
|
||||
final byte[] buf = new byte[2*blkSize];
|
||||
final int numWriters = 4;
|
||||
final int repl = 3;
|
||||
|
||||
final CyclicBarrier barrier = new CyclicBarrier(numWriters);
|
||||
final CountDownLatch writeLatch = new CountDownLatch(numWriters);
|
||||
final AtomicBoolean failure = new AtomicBoolean();
|
||||
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
conf.getLong(DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY, blkSize);
|
||||
final MiniDFSCluster cluster =
|
||||
new MiniDFSCluster.Builder(conf).numDataNodes(8).build();
|
||||
|
||||
try {
|
||||
cluster.waitActive();
|
||||
// create multiple writer threads to create a file with many blocks.
|
||||
// will test that concurrent writing causes IBR batching in the NN
|
||||
Thread[] writers = new Thread[numWriters];
|
||||
for (int i=0; i < writers.length; i++) {
|
||||
final Path p = new Path("/writer"+i);
|
||||
writers[i] = new Thread(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
try {
|
||||
FileSystem fs = cluster.getFileSystem();
|
||||
FSDataOutputStream os =
|
||||
fs.create(p, true, buf.length, (short)repl, blkSize);
|
||||
// align writers for maximum chance of IBR batching.
|
||||
barrier.await();
|
||||
int remaining = fileSize;
|
||||
while (remaining > 0) {
|
||||
os.write(buf);
|
||||
remaining -= buf.length;
|
||||
}
|
||||
os.close();
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
failure.set(true);
|
||||
}
|
||||
// let main thread know we are done.
|
||||
writeLatch.countDown();
|
||||
}
|
||||
});
|
||||
writers[i].start();
|
||||
}
|
||||
|
||||
// when and how many IBRs are queued is indeterminate, so just watch
|
||||
// the metrics and verify something was queued at during execution.
|
||||
boolean sawQueued = false;
|
||||
while (!writeLatch.await(10, TimeUnit.MILLISECONDS)) {
|
||||
assertFalse(failure.get());
|
||||
MetricsRecordBuilder rb = getMetrics("NameNodeActivity");
|
||||
long queued = MetricsAsserts.getIntGauge("BlockOpsQueued", rb);
|
||||
sawQueued |= (queued > 0);
|
||||
}
|
||||
assertFalse(failure.get());
|
||||
assertTrue(sawQueued);
|
||||
|
||||
// verify that batching of the IBRs occurred.
|
||||
MetricsRecordBuilder rb = getMetrics("NameNodeActivity");
|
||||
long batched = MetricsAsserts.getLongCounter("BlockOpsBatched", rb);
|
||||
assertTrue(batched > 0);
|
||||
} finally {
|
||||
cluster.shutdown();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -304,7 +304,8 @@ public void testBlockReceived() throws Exception {
|
|||
reportDnNum++;
|
||||
}
|
||||
}
|
||||
|
||||
// IBRs are async, make sure the NN processes all of them.
|
||||
cluster.getNamesystem().getBlockManager().flushBlockOps();
|
||||
assertEquals(DATANODE_COUNT - 3,
|
||||
blkManager.pendingReplications.getNumReplicas(blocks[0]));
|
||||
|
||||
|
|
@ -322,6 +323,7 @@ public void testBlockReceived() throws Exception {
|
|||
}
|
||||
}
|
||||
|
||||
cluster.getNamesystem().getBlockManager().flushBlockOps();
|
||||
assertEquals(DATANODE_COUNT - 3,
|
||||
blkManager.pendingReplications.getNumReplicas(blocks[0]));
|
||||
|
||||
|
|
|
|||
|
|
@ -113,10 +113,14 @@ public void startUpCluster() throws IOException {
|
|||
|
||||
@After
|
||||
public void shutDownCluster() throws IOException {
|
||||
if (fs != null) {
|
||||
fs.close();
|
||||
}
|
||||
if (cluster != null) {
|
||||
cluster.shutdownDataNodes();
|
||||
cluster.shutdown();
|
||||
}
|
||||
}
|
||||
|
||||
protected static void resetConfiguration() {
|
||||
conf = new Configuration();
|
||||
|
|
|
|||
|
|
@ -26,7 +26,6 @@
|
|||
import java.io.IOException;
|
||||
import java.net.InetSocketAddress;
|
||||
import java.util.UUID;
|
||||
|
||||
import org.apache.commons.logging.Log;
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
|
|
@ -187,7 +186,9 @@ public void verifyIncrementalBlockReports(boolean splitReports) throws IOExcepti
|
|||
}
|
||||
|
||||
// Make sure that the deleted block from each storage was picked up
|
||||
// by the NameNode.
|
||||
// by the NameNode. IBRs are async, make sure the NN processes
|
||||
// all of them.
|
||||
cluster.getNamesystem().getBlockManager().flushBlockOps();
|
||||
assertThat(cluster.getNamesystem().getMissingBlocksCount(),
|
||||
is((long) reports.length));
|
||||
}
|
||||
|
|
@ -256,7 +257,8 @@ public void testNnLearnsNewStorages()
|
|||
|
||||
// Send the report to the NN.
|
||||
cluster.getNameNodeRpc().blockReceivedAndDeleted(dn0Reg, poolId, reports);
|
||||
|
||||
// IBRs are async, make sure the NN processes all of them.
|
||||
cluster.getNamesystem().getBlockManager().flushBlockOps();
|
||||
// Make sure that the NN has learned of the new storage.
|
||||
DatanodeStorageInfo storageInfo = cluster.getNameNode()
|
||||
.getNamesystem()
|
||||
|
|
|
|||
|
|
@ -101,13 +101,13 @@ public void testDeadDatanode() throws Exception {
|
|||
StorageReceivedDeletedBlocks[] storageBlocks = {
|
||||
new StorageReceivedDeletedBlocks(reg.getDatanodeUuid(), blocks) };
|
||||
|
||||
// Ensure blockReceived call from dead datanode is rejected with IOException
|
||||
try {
|
||||
// Ensure blockReceived call from dead datanode is not rejected with
|
||||
// IOException, since it's async, but the node remains unregistered.
|
||||
dnp.blockReceivedAndDeleted(reg, poolId, storageBlocks);
|
||||
fail("Expected IOException is not thrown");
|
||||
} catch (IOException ex) {
|
||||
// Expected
|
||||
}
|
||||
BlockManager bm = cluster.getNamesystem().getBlockManager();
|
||||
// IBRs are async, make sure the NN processes all of them.
|
||||
bm.flushBlockOps();
|
||||
assertFalse(bm.getDatanodeManager().getDatanode(reg).isRegistered());
|
||||
|
||||
// Ensure blockReport from dead datanode is rejected with IOException
|
||||
StorageBlockReport[] report = { new StorageBlockReport(
|
||||
|
|
|
|||
Loading…
Reference in New Issue