HBASE-5549 HBASE-5572 Master can fail if ZooKeeper session expires (N Keywal)
git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1301775 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Zhihong Yu
parent
0ad4e32993
commit
1d24d71821
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@ -130,91 +130,90 @@ class ActiveMasterManager extends ZooKeeperListener {
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* set on this Master)
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*/
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boolean blockUntilBecomingActiveMaster(MonitoredTask startupStatus,
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ClusterStatusTracker clusterStatusTracker) {
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startupStatus.setStatus("Trying to register in ZK as active master");
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boolean cleanSetOfActiveMaster = true;
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// Try to become the active master, watch if there is another master.
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// Write out our ServerName as versioned bytes.
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try {
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String backupZNode = ZKUtil.joinZNode(
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ClusterStatusTracker clusterStatusTracker) {
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while (true) {
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startupStatus.setStatus("Trying to register in ZK as active master");
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// Try to become the active master, watch if there is another master.
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// Write out our ServerName as versioned bytes.
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try {
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String backupZNode = ZKUtil.joinZNode(
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this.watcher.backupMasterAddressesZNode, this.sn.toString());
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if (ZKUtil.createEphemeralNodeAndWatch(this.watcher,
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if (ZKUtil.createEphemeralNodeAndWatch(this.watcher,
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this.watcher.masterAddressZNode, this.sn.getVersionedBytes())) {
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// If we were a backup master before, delete our ZNode from the backup
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// master directory since we are the active now
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LOG.info("Deleting ZNode for " + backupZNode +
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" from backup master directory");
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ZKUtil.deleteNodeFailSilent(this.watcher, backupZNode);
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// If we were a backup master before, delete our ZNode from the backup
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// master directory since we are the active now
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LOG.info("Deleting ZNode for " + backupZNode +
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" from backup master directory");
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ZKUtil.deleteNodeFailSilent(this.watcher, backupZNode);
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// We are the master, return
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startupStatus.setStatus("Successfully registered as active master.");
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// We are the master, return
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startupStatus.setStatus("Successfully registered as active master.");
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this.clusterHasActiveMaster.set(true);
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LOG.info("Master=" + this.sn);
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return true;
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}
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// There is another active master running elsewhere or this is a restart
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// and the master ephemeral node has not expired yet.
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this.clusterHasActiveMaster.set(true);
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LOG.info("Master=" + this.sn);
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return cleanSetOfActiveMaster;
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}
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cleanSetOfActiveMaster = false;
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// There is another active master running elsewhere or this is a restart
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// and the master ephemeral node has not expired yet.
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this.clusterHasActiveMaster.set(true);
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/*
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* Add a ZNode for ourselves in the backup master directory since we are
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* not the active master.
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*
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* If we become the active master later, ActiveMasterManager will delete
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* this node explicitly. If we crash before then, ZooKeeper will delete
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* this node for us since it is ephemeral.
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*/
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LOG.info("Adding ZNode for " + backupZNode +
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" in backup master directory");
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ZKUtil.createEphemeralNodeAndWatch(this.watcher, backupZNode,
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/*
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* Add a ZNode for ourselves in the backup master directory since we are
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* not the active master.
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*
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* If we become the active master later, ActiveMasterManager will delete
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* this node explicitly. If we crash before then, ZooKeeper will delete
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* this node for us since it is ephemeral.
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*/
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LOG.info("Adding ZNode for " + backupZNode +
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" in backup master directory");
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ZKUtil.createEphemeralNodeAndWatch(this.watcher, backupZNode,
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HConstants.EMPTY_BYTE_ARRAY);
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String msg;
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byte [] bytes =
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ZKUtil.getDataAndWatch(this.watcher, this.watcher.masterAddressZNode);
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if (bytes == null) {
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msg = ("A master was detected, but went down before its address " +
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"could be read. Attempting to become the next active master");
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} else {
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ServerName currentMaster = ServerName.parseVersionedServerName(bytes);
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if (ServerName.isSameHostnameAndPort(currentMaster, this.sn)) {
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msg = ("Current master has this master's address, " +
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currentMaster + "; master was restarted? Waiting on znode " +
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"to expire...");
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// Hurry along the expiration of the znode.
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ZKUtil.deleteNode(this.watcher, this.watcher.masterAddressZNode);
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String msg;
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byte[] bytes =
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ZKUtil.getDataAndWatch(this.watcher, this.watcher.masterAddressZNode);
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if (bytes == null) {
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msg = ("A master was detected, but went down before its address " +
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"could be read. Attempting to become the next active master");
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} else {
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msg = "Another master is the active master, " + currentMaster +
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"; waiting to become the next active master";
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ServerName currentMaster = ServerName.parseVersionedServerName(bytes);
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if (ServerName.isSameHostnameAndPort(currentMaster, this.sn)) {
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msg = ("Current master has this master's address, " +
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currentMaster + "; master was restarted? Deleting node.");
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// Hurry along the expiration of the znode.
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ZKUtil.deleteNode(this.watcher, this.watcher.masterAddressZNode);
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} else {
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msg = "Another master is the active master, " + currentMaster +
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"; waiting to become the next active master";
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}
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}
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LOG.info(msg);
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startupStatus.setStatus(msg);
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} catch (KeeperException ke) {
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master.abort("Received an unexpected KeeperException, aborting", ke);
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return false;
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}
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LOG.info(msg);
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startupStatus.setStatus(msg);
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} catch (KeeperException ke) {
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master.abort("Received an unexpected KeeperException, aborting", ke);
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return false;
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}
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synchronized (this.clusterHasActiveMaster) {
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while (this.clusterHasActiveMaster.get() && !this.master.isStopped()) {
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try {
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this.clusterHasActiveMaster.wait();
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} catch (InterruptedException e) {
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// We expect to be interrupted when a master dies, will fall out if so
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LOG.debug("Interrupted waiting for master to die", e);
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synchronized (this.clusterHasActiveMaster) {
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while (this.clusterHasActiveMaster.get() && !this.master.isStopped()) {
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try {
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this.clusterHasActiveMaster.wait();
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} catch (InterruptedException e) {
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// We expect to be interrupted when a master dies,
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// will fall out if so
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LOG.debug("Interrupted waiting for master to die", e);
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}
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}
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if (!clusterStatusTracker.isClusterUp()) {
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this.master.stop(
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"Cluster went down before this master became active");
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}
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if (this.master.isStopped()) {
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return false;
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}
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// there is no active master so we can try to become active master again
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}
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if (!clusterStatusTracker.isClusterUp()) {
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this.master.stop("Cluster went down before this master became active");
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}
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if (this.master.isStopped()) {
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return cleanSetOfActiveMaster;
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}
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// Try to become active master again now that there is no active master
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blockUntilBecomingActiveMaster(startupStatus,clusterStatusTracker);
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}
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return cleanSetOfActiveMaster;
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}
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/**
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@ -1527,8 +1527,7 @@ Server {
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private boolean tryRecoveringExpiredZKSession() throws InterruptedException,
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IOException, KeeperException, ExecutionException {
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this.zooKeeper = new ZooKeeperWatcher(conf, MASTER + ":"
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+ this.serverName.getPort(), this, true);
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this.zooKeeper.reconnectAfterExpiration();
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Callable<Boolean> callable = new Callable<Boolean> () {
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public Boolean call() throws InterruptedException,
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@ -73,25 +73,41 @@ public class RecoverableZooKeeper {
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// An identifier of this process in the cluster
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private final String identifier;
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private final byte[] id;
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private int retryIntervalMillis;
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private Watcher watcher;
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private int sessionTimeout;
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private String quorumServers;
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private static final int ID_OFFSET = Bytes.SIZEOF_INT;
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// the magic number is to be backward compatible
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private static final byte MAGIC =(byte) 0XFF;
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private static final int MAGIC_OFFSET = Bytes.SIZEOF_BYTE;
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public RecoverableZooKeeper(String quorumServers, int seesionTimeout,
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public RecoverableZooKeeper(String quorumServers, int sessionTimeout,
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Watcher watcher, int maxRetries, int retryIntervalMillis)
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throws IOException {
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this.zk = new ZooKeeper(quorumServers, seesionTimeout, watcher);
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this.zk = new ZooKeeper(quorumServers, sessionTimeout, watcher);
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this.retryCounterFactory =
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new RetryCounterFactory(maxRetries, retryIntervalMillis);
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this.retryIntervalMillis = retryIntervalMillis;
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// the identifier = processID@hostName
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this.identifier = ManagementFactory.getRuntimeMXBean().getName();
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LOG.info("The identifier of this process is " + identifier);
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this.id = Bytes.toBytes(identifier);
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this.watcher = watcher;
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this.sessionTimeout = sessionTimeout;
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this.quorumServers = quorumServers;
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}
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public void reconnectAfterExpiration()
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throws IOException, InterruptedException {
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LOG.info("Closing dead ZooKeeper connection, session" +
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" was: 0x"+Long.toHexString(zk.getSessionId()));
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zk.close();
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this.zk = new ZooKeeper(this.quorumServers,
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this.sessionTimeout, this.watcher);
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LOG.info("Recreated a ZooKeeper, session" +
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" is: 0x"+Long.toHexString(zk.getSessionId()));
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}
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/**
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@ -123,6 +139,7 @@ public class RecoverableZooKeeper {
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throw e;
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -159,6 +176,7 @@ public class RecoverableZooKeeper {
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} catch (KeeperException e) {
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switch (e.code()) {
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -194,6 +212,7 @@ public class RecoverableZooKeeper {
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} catch (KeeperException e) {
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switch (e.code()) {
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -229,6 +248,7 @@ public class RecoverableZooKeeper {
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} catch (KeeperException e) {
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switch (e.code()) {
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -264,6 +284,7 @@ public class RecoverableZooKeeper {
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} catch (KeeperException e) {
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switch (e.code()) {
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -301,6 +322,7 @@ public class RecoverableZooKeeper {
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} catch (KeeperException e) {
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switch (e.code()) {
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -338,6 +360,7 @@ public class RecoverableZooKeeper {
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} catch (KeeperException e) {
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switch (e.code()) {
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -377,6 +400,7 @@ public class RecoverableZooKeeper {
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} catch (KeeperException e) {
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switch (e.code()) {
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -484,6 +508,7 @@ public class RecoverableZooKeeper {
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throw e;
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -523,6 +548,7 @@ public class RecoverableZooKeeper {
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} catch (KeeperException e) {
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switch (e.code()) {
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case CONNECTIONLOSS:
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case SESSIONEXPIRED:
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case OPERATIONTIMEOUT:
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LOG.warn("Possibly transient ZooKeeper exception: " + e);
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if (!retryCounter.shouldRetry()) {
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@ -253,6 +253,10 @@ public class ZooKeeperWatcher implements Watcher, Abortable, Closeable {
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return recoverableZooKeeper;
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}
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public void reconnectAfterExpiration() throws IOException, InterruptedException {
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recoverableZooKeeper.reconnectAfterExpiration();
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}
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/**
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* Get the quorum address of this instance.
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* @return quorum string of this zookeeper connection instance
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@ -39,6 +39,7 @@ import java.util.Map;
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import java.util.NavigableSet;
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import java.util.Random;
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import java.util.UUID;
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import java.util.concurrent.atomic.AtomicBoolean;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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@ -73,6 +74,7 @@ import org.apache.hadoop.hbase.regionserver.StoreFile;
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import org.apache.hadoop.hbase.security.User;
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import org.apache.hadoop.hbase.util.Bytes;
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import org.apache.hadoop.hbase.util.FSUtils;
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import org.apache.hadoop.hbase.util.JVMClusterUtil;
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import org.apache.hadoop.hbase.util.RegionSplitter;
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import org.apache.hadoop.hbase.util.Threads;
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import org.apache.hadoop.hbase.util.Writables;
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@ -86,6 +88,7 @@ import org.apache.hadoop.hdfs.MiniDFSCluster;
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import org.apache.hadoop.mapred.MiniMRCluster;
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import org.apache.zookeeper.KeeperException;
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import org.apache.zookeeper.KeeperException.NodeExistsException;
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import org.apache.zookeeper.WatchedEvent;
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import org.apache.zookeeper.ZooKeeper;
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/**
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@ -1308,7 +1311,7 @@ public class HBaseTestingUtility {
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*/
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public void expireMasterSession() throws Exception {
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HMaster master = hbaseCluster.getMaster();
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expireSession(master.getZooKeeper(), master);
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expireSession(master.getZooKeeper(), false);
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}
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/**
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@ -1318,7 +1321,7 @@ public class HBaseTestingUtility {
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*/
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public void expireRegionServerSession(int index) throws Exception {
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HRegionServer rs = hbaseCluster.getRegionServer(index);
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expireSession(rs.getZooKeeper(), rs);
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expireSession(rs.getZooKeeper(), false);
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}
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@ -1334,8 +1337,15 @@ public class HBaseTestingUtility {
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}
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/**
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* Expire a ZooKeeer session as recommended in ZooKeeper documentation
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* Expire a ZooKeeper session as recommended in ZooKeeper documentation
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* http://wiki.apache.org/hadoop/ZooKeeper/FAQ#A4
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* There are issues when doing this:
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* [1] http://www.mail-archive.com/dev@zookeeper.apache.org/msg01942.html
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* [2] https://issues.apache.org/jira/browse/ZOOKEEPER-1105
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*
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* @param nodeZK - the ZK watcher to expire
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* @param checkStatus - true to check if we can create an HTable with the
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* current configuration.
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*/
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public void expireSession(ZooKeeperWatcher nodeZK, boolean checkStatus)
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throws Exception {
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@ -1345,14 +1355,29 @@ public class HBaseTestingUtility {
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byte[] password = zk.getSessionPasswd();
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long sessionID = zk.getSessionId();
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// Expiry seems to be asynchronous (see comment from P. Hunt in [1]),
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// so we create a first watcher to be sure that the
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// event was sent. We expect that if our watcher receives the event
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// other watchers on the same machine will get is as well.
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// When we ask to close the connection, ZK does not close it before
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// we receive all the events, so don't have to capture the event, just
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// closing the connection should be enough.
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ZooKeeper monitor = new ZooKeeper(quorumServers,
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1000, new org.apache.zookeeper.Watcher(){
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@Override
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public void process(WatchedEvent watchedEvent) {
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LOG.info("Monitor ZKW received event="+watchedEvent);
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}
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} , sessionID, password);
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// Making it expire
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ZooKeeper newZK = new ZooKeeper(quorumServers,
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1000, EmptyWatcher.instance, sessionID, password);
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newZK.close();
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LOG.info("ZK Closed Session 0x" + Long.toHexString(sessionID));
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// There is actually no reason to sleep here. Session is expired.
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// May be for old ZK versions?
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// Thread.sleep(sleep);
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// Now closing & waiting to be sure that the clients get it.
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monitor.close();
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if (checkStatus) {
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new HTable(new Configuration(conf), HConstants.META_TABLE_NAME).close();
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@ -1508,7 +1533,7 @@ public class HBaseTestingUtility {
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* Make sure that at least the specified number of region servers
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* are running
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* @param num minimum number of region servers that should be running
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* @return True if we started some servers
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* @return true if we started some servers
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* @throws IOException
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*/
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public boolean ensureSomeRegionServersAvailable(final int num)
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@ -1524,6 +1549,31 @@ public class HBaseTestingUtility {
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}
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/**
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* Make sure that at least the specified number of region servers
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* are running. We don't count the ones that are currently stopping or are
|
||||
* stopped.
|
||||
* @param num minimum number of region servers that should be running
|
||||
* @return true if we started some servers
|
||||
* @throws IOException
|
||||
*/
|
||||
public boolean ensureSomeNonStoppedRegionServersAvailable(final int num)
|
||||
throws IOException {
|
||||
boolean startedServer = ensureSomeRegionServersAvailable(num);
|
||||
|
||||
for (JVMClusterUtil.RegionServerThread rst :
|
||||
hbaseCluster.getRegionServerThreads()) {
|
||||
|
||||
HRegionServer hrs = rst.getRegionServer();
|
||||
if (hrs.isStopping() || hrs.isStopped()) {
|
||||
LOG.info("A region server is stopped or stopping:"+hrs);
|
||||
LOG.info("Started new server=" + hbaseCluster.startRegionServer());
|
||||
startedServer = true;
|
||||
}
|
||||
}
|
||||
|
||||
return startedServer;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -36,6 +36,7 @@ import org.apache.hadoop.hbase.client.HConnection;
|
|||
import org.apache.hadoop.hbase.client.HConnectionManager;
|
||||
import org.apache.hadoop.hbase.client.HTable;
|
||||
import org.apache.hadoop.hbase.client.Put;
|
||||
import org.apache.hadoop.hbase.master.HMaster;
|
||||
import org.apache.hadoop.hbase.util.Bytes;
|
||||
import org.apache.hadoop.hbase.zookeeper.ZKConfig;
|
||||
import org.apache.hadoop.hbase.zookeeper.ZKUtil;
|
||||
|
|
@ -93,40 +94,75 @@ public class TestZooKeeper {
|
|||
*/
|
||||
@Test
|
||||
public void testClientSessionExpired() throws Exception {
|
||||
LOG.info("testClientSessionExpired");
|
||||
Configuration c = new Configuration(TEST_UTIL.getConfiguration());
|
||||
new HTable(c, HConstants.META_TABLE_NAME).close();
|
||||
|
||||
// We don't want to share the connection as we will check
|
||||
// its state
|
||||
c.set(HConstants.HBASE_CLIENT_INSTANCE_ID, "1111");
|
||||
|
||||
HConnection connection = HConnectionManager.getConnection(c);
|
||||
|
||||
ZooKeeperWatcher connectionZK = connection.getZooKeeperWatcher();
|
||||
LOG.info("ZooKeeperWatcher= 0x"+ Integer.toHexString(
|
||||
connectionZK.hashCode()));
|
||||
LOG.info("getRecoverableZooKeeper= 0x"+ Integer.toHexString(
|
||||
connectionZK.getRecoverableZooKeeper().hashCode()));
|
||||
LOG.info("session="+Long.toHexString(
|
||||
connectionZK.getRecoverableZooKeeper().getSessionId()));
|
||||
|
||||
TEST_UTIL.expireSession(connectionZK);
|
||||
|
||||
// Depending on how long you wait here, the state after dump will
|
||||
// be 'closed' or 'Connecting'.
|
||||
// There should be no reason to wait, the connection is closed on the server
|
||||
// Thread.sleep(sessionTimeout * 3L);
|
||||
|
||||
LOG.info("Before dump state=" +
|
||||
LOG.info("Before using zkw state=" +
|
||||
connectionZK.getRecoverableZooKeeper().getState());
|
||||
// provoke session expiration by doing something with ZK
|
||||
ZKUtil.dump(connectionZK);
|
||||
try {
|
||||
connectionZK.getRecoverableZooKeeper().getZooKeeper().exists(
|
||||
"/1/1", false);
|
||||
} catch (KeeperException ignored) {
|
||||
}
|
||||
|
||||
// Check that the old ZK connection is closed, means we did expire
|
||||
LOG.info("ZooKeeper should have timed out");
|
||||
States state = connectionZK.getRecoverableZooKeeper().getState();
|
||||
LOG.info("After dump state=" + state);
|
||||
LOG.info("After using zkw state=" + state);
|
||||
LOG.info("session="+Long.toHexString(
|
||||
connectionZK.getRecoverableZooKeeper().getSessionId()));
|
||||
|
||||
// It's asynchronous, so we may have to wait a little...
|
||||
final long limit1 = System.currentTimeMillis() + 3000;
|
||||
while (System.currentTimeMillis() < limit1 && state != States.CLOSED){
|
||||
state = connectionZK.getRecoverableZooKeeper().getState();
|
||||
}
|
||||
LOG.info("After using zkw loop=" + state);
|
||||
LOG.info("ZooKeeper should have timed out");
|
||||
LOG.info("session="+Long.toHexString(
|
||||
connectionZK.getRecoverableZooKeeper().getSessionId()));
|
||||
|
||||
// It's surprising but sometimes we can still be in connected state.
|
||||
// As it's known (even if not understood) we don't make the the test fail
|
||||
// for this reason.
|
||||
Assert.assertTrue(state == States.CLOSED);
|
||||
|
||||
// Check that the client recovered
|
||||
ZooKeeperWatcher newConnectionZK = connection.getZooKeeperWatcher();
|
||||
//Here, if you wait, you will have a CONNECTED state. If you don't,
|
||||
// you may have the CONNECTING one.
|
||||
//Thread.sleep(sessionTimeout * 3L);
|
||||
|
||||
States state2 = newConnectionZK.getRecoverableZooKeeper().getState();
|
||||
LOG.info("After new get state=" +state2);
|
||||
|
||||
// As it's an asynchronous event we may got the same ZKW, if it's not
|
||||
// yet invalidated. Hence this loop.
|
||||
final long limit2 = System.currentTimeMillis() + 3000;
|
||||
while (System.currentTimeMillis() < limit2 &&
|
||||
state2 != States.CONNECTED && state2 != States.CONNECTING) {
|
||||
|
||||
newConnectionZK = connection.getZooKeeperWatcher();
|
||||
state2 = newConnectionZK.getRecoverableZooKeeper().getState();
|
||||
}
|
||||
LOG.info("After new get state loop=" + state2);
|
||||
|
||||
Assert.assertTrue(
|
||||
state2 == States.CONNECTED || state2 == States.CONNECTING);
|
||||
|
||||
connection.close();
|
||||
}
|
||||
|
||||
@Test
|
||||
|
|
@ -141,7 +177,21 @@ public class TestZooKeeper {
|
|||
public void testMasterSessionExpired() throws Exception {
|
||||
LOG.info("Starting testMasterSessionExpired");
|
||||
TEST_UTIL.expireMasterSession();
|
||||
Thread.sleep(7000); // Helps the test to succeed!!!
|
||||
testSanity();
|
||||
}
|
||||
|
||||
/**
|
||||
* Master recovery when the znode already exists. Internally, this
|
||||
* test differs from {@link #testMasterSessionExpired} because here
|
||||
* the master znode will exist in ZK.
|
||||
*/
|
||||
@Test(timeout=20000)
|
||||
public void testMasterZKSessionRecoveryFailure() throws Exception {
|
||||
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
|
||||
HMaster m = cluster.getMaster();
|
||||
m.abort("Test recovery from zk session expired",
|
||||
new KeeperException.SessionExpiredException());
|
||||
assertFalse(m.isStopped());
|
||||
testSanity();
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -87,6 +87,8 @@ public class TestDistributedLogSplitting {
|
|||
LOG.info("Starting cluster");
|
||||
conf = HBaseConfiguration.create();
|
||||
conf.getLong("hbase.splitlog.max.resubmit", 0);
|
||||
// Make the failure test faster
|
||||
conf.setInt("zookeeper.recovery.retry", 0);
|
||||
TEST_UTIL = new HBaseTestingUtility(conf);
|
||||
TEST_UTIL.startMiniCluster(NUM_MASTERS, num_rs);
|
||||
cluster = TEST_UTIL.getHBaseCluster();
|
||||
|
|
@ -245,7 +247,7 @@ public class TestDistributedLogSplitting {
|
|||
slm.enqueueSplitTask(logfiles[0].getPath().toString(), batch);
|
||||
//waitForCounter but for one of the 2 counters
|
||||
long curt = System.currentTimeMillis();
|
||||
long waitTime = 30000;
|
||||
long waitTime = 80000;
|
||||
long endt = curt + waitTime;
|
||||
while (curt < endt) {
|
||||
if ((tot_wkr_task_resigned.get() + tot_wkr_task_err.get() +
|
||||
|
|
|
|||
|
|
@ -1,96 +0,0 @@
|
|||
/**
|
||||
* Copyright The Apache Software Foundation
|
||||
*
|
||||
* Licensed to the Apache Software Foundation (ASF) under one
|
||||
* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
package org.apache.hadoop.hbase.master;
|
||||
|
||||
import static org.junit.Assert.assertFalse;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.hbase.HBaseTestingUtility;
|
||||
import org.apache.hadoop.hbase.MediumTests;
|
||||
import org.apache.hadoop.hbase.MiniHBaseCluster;
|
||||
import org.apache.zookeeper.KeeperException;
|
||||
import org.junit.After;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
import org.junit.experimental.categories.Category;
|
||||
|
||||
/**
|
||||
* Test cases for master to recover from ZK session expiry.
|
||||
*/
|
||||
@Category(MediumTests.class)
|
||||
public class TestMasterZKSessionRecovery {
|
||||
private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
|
||||
|
||||
/**
|
||||
* The default timeout is 5 minutes.
|
||||
* Shorten it so that the test won't wait for too long.
|
||||
*/
|
||||
static {
|
||||
Configuration conf = TEST_UTIL.getConfiguration();
|
||||
conf.setLong("hbase.master.zksession.recover.timeout", 50000);
|
||||
}
|
||||
|
||||
@Before
|
||||
public void setUp() throws Exception {
|
||||
// Start a cluster of one regionserver.
|
||||
TEST_UTIL.startMiniCluster(1);
|
||||
}
|
||||
|
||||
@After
|
||||
public void tearDown() throws Exception {
|
||||
TEST_UTIL.shutdownMiniCluster();
|
||||
}
|
||||
|
||||
/**
|
||||
* Negative test of master recovery from zk session expiry.
|
||||
* <p>
|
||||
* Starts with one master. Fakes the master zk session expired.
|
||||
* Ensures the master cannot recover the expired zk session since
|
||||
* the master zk node is still there.
|
||||
* @throws Exception
|
||||
*/
|
||||
@Test(timeout=10000)
|
||||
public void testMasterZKSessionRecoveryFailure() throws Exception {
|
||||
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
|
||||
HMaster m = cluster.getMaster();
|
||||
m.abort("Test recovery from zk session expired",
|
||||
new KeeperException.SessionExpiredException());
|
||||
assertTrue(m.isStopped());
|
||||
}
|
||||
|
||||
/**
|
||||
* Positive test of master recovery from zk session expiry.
|
||||
* <p>
|
||||
* Starts with one master. Closes the master zk session.
|
||||
* Ensures the master can recover the expired zk session.
|
||||
* @throws Exception
|
||||
*/
|
||||
@Test(timeout=60000)
|
||||
public void testMasterZKSessionRecoverySuccess() throws Exception {
|
||||
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
|
||||
HMaster m = cluster.getMaster();
|
||||
m.getZooKeeperWatcher().close();
|
||||
m.abort("Test recovery from zk session expired",
|
||||
new KeeperException.SessionExpiredException());
|
||||
assertFalse(m.isStopped());
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -20,6 +20,7 @@
|
|||
package org.apache.hadoop.hbase.regionserver;
|
||||
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.Assert.assertNotNull;
|
||||
import static org.junit.Assert.assertNotSame;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
|
|
@ -78,7 +79,7 @@ public class TestSplitTransactionOnCluster {
|
|||
}
|
||||
|
||||
@Before public void setup() throws IOException {
|
||||
TESTING_UTIL.ensureSomeRegionServersAvailable(NB_SERVERS);
|
||||
TESTING_UTIL.ensureSomeNonStoppedRegionServersAvailable(NB_SERVERS);
|
||||
this.admin = new HBaseAdmin(TESTING_UTIL.getConfiguration());
|
||||
this.cluster = TESTING_UTIL.getMiniHBaseCluster();
|
||||
}
|
||||
|
|
@ -398,7 +399,10 @@ public class TestSplitTransactionOnCluster {
|
|||
HRegionServer tableRegionServer = cluster.getRegionServer(tableRegionIndex);
|
||||
if (metaRegionServer.getServerName().equals(tableRegionServer.getServerName())) {
|
||||
HRegionServer hrs = getOtherRegionServer(cluster, metaRegionServer);
|
||||
LOG.info("Moving " + hri.getRegionNameAsString() + " to " +
|
||||
assertNotNull(hrs);
|
||||
assertNotNull(hri);
|
||||
LOG.
|
||||
info("Moving " + hri.getRegionNameAsString() + " to " +
|
||||
hrs.getServerName() + "; metaServerIndex=" + metaServerIndex);
|
||||
admin.move(hri.getEncodedNameAsBytes(),
|
||||
Bytes.toBytes(hrs.getServerName().toString()));
|
||||
|
|
|
|||
|
|
@ -93,6 +93,8 @@ public class TestReplication {
|
|||
conf1.setLong("replication.source.sleepforretries", 100);
|
||||
conf1.setInt("hbase.regionserver.maxlogs", 10);
|
||||
conf1.setLong("hbase.master.logcleaner.ttl", 10);
|
||||
conf1.setInt("zookeeper.recovery.retry", 1);
|
||||
conf1.setInt("zookeeper.recovery.retry.intervalmill", 10);
|
||||
conf1.setBoolean(HConstants.REPLICATION_ENABLE_KEY, true);
|
||||
conf1.setBoolean("dfs.support.append", true);
|
||||
conf1.setLong(HConstants.THREAD_WAKE_FREQUENCY, 100);
|
||||
|
|
@ -651,9 +653,11 @@ public class TestReplication {
|
|||
|
||||
int lastCount = 0;
|
||||
|
||||
final long start = System.currentTimeMillis();
|
||||
for (int i = 0; i < NB_RETRIES; i++) {
|
||||
if (i==NB_RETRIES-1) {
|
||||
fail("Waited too much time for queueFailover replication");
|
||||
fail("Waited too much time for queueFailover replication. " +
|
||||
"Waited "+(System.currentTimeMillis() - start)+"ms.");
|
||||
}
|
||||
Scan scan2 = new Scan();
|
||||
ResultScanner scanner2 = htable2.getScanner(scan2);
|
||||
|
|
|
|||
|
|
@ -24,6 +24,7 @@ import org.apache.commons.logging.LogFactory;
|
|||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.hbase.*;
|
||||
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
|
||||
import org.apache.zookeeper.KeeperException;
|
||||
import org.apache.zookeeper.KeeperException.SessionExpiredException;
|
||||
import org.junit.*;
|
||||
import org.junit.experimental.categories.Category;
|
||||
|
|
@ -58,7 +59,9 @@ public class TestReplicationPeer {
|
|||
try {
|
||||
LOG.info("Attempting to use expired ReplicationPeer ZooKeeper session.");
|
||||
// Trying to use the expired session to assert that it is indeed closed
|
||||
zkw.getRecoverableZooKeeper().exists("/1/2", false);
|
||||
zkw.getRecoverableZooKeeper().getZooKeeper().exists("/2/2", false);
|
||||
Assert.fail(
|
||||
"ReplicationPeer ZooKeeper session was not properly expired.");
|
||||
} catch (SessionExpiredException k) {
|
||||
rp.reloadZkWatcher();
|
||||
|
||||
|
|
@ -66,13 +69,12 @@ public class TestReplicationPeer {
|
|||
|
||||
// Try to use the connection again
|
||||
LOG.info("Attempting to use refreshed "
|
||||
+ "ReplicationPeer ZooKeeper session.");
|
||||
zkw.getRecoverableZooKeeper().exists("/1/2", false);
|
||||
+ "ReplicationPeer ZooKeeper session.");
|
||||
zkw.getRecoverableZooKeeper().exists("/3/2", false);
|
||||
|
||||
return;
|
||||
} catch (KeeperException.ConnectionLossException ignored) {
|
||||
// We sometimes receive this exception. We just ignore it.
|
||||
}
|
||||
|
||||
Assert.fail("ReplicationPeer ZooKeeper session was not properly expired.");
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue