Example usage for org.apache.hadoop.metrics2.util MBeans unregister

Introduction

In this page you can find the example usage for org.apache.hadoop.metrics2.util MBeans unregister.

Prototype

static public void unregister(ObjectName mbeanName) 

Source Link

Usage

From source file:com.alibaba.wasp.fserver.FServer.java

License:Apache License

@Override
public void run() {
    //    try {/*from w  w w. j  a  v  a 2  s.  c  om*/
    //      preRegistrationInitialization();
    //    } catch (Exception e) {
    //      this.rpcServer.stop();
    //      abort("Fatal exception during initialization", e);
    //    }
    try {
        initializeZooKeeper();
    } catch (Exception t) {
        this.rpcServer.stop();
        abort("Initialization of FS failed.  Hence aborting FS.", t);
    }
    try {
        while (keepLooping()) {
            FServerStartupResponse w = reportForDuty();
            if (w == null) {
                LOG.warn("reportForDuty failed; sleeping and then retrying.");
                this.sleeper.sleep();
            } else {
                handleReportForDutyResponse(w);
                break;
            }
        }

        // We registered with the Master. Go into run mode.
        long lastMsg = 0;
        long oldRequestCount = -1;
        // The main run loop.
        while (!this.stopped && isHealthy()) {
            if (!isClusterUp()) {
                if (isOnlineEntityGroupsEmpty()) {
                    stop("Exiting; cluster shutdown set and not carrying any entityGroups");
                } else if (!this.stopping) {
                    this.stopping = true;
                    LOG.info("Closing user entityGroups");
                    closeUserEntityGroups(this.abortRequested);
                } else if (this.stopping) {
                    boolean allUserEntityGroupsOffline = areAllUserEntityGroupsOffline();
                    if (allUserEntityGroupsOffline) {
                        // Set stopped if no requests since last time we went around the
                        // loop.
                        if (oldRequestCount == this.requestCount.get()) {
                            stop("Stopped;");
                            break;
                        }
                        oldRequestCount = this.requestCount.get();
                    } else {
                        // Make sure all entityGroups have been closed -- some
                        // entityGroups may
                        // have not got it because we were splitting at the time of
                        // the call to closeUserEntityGroups.
                        closeUserEntityGroups(this.abortRequested);
                    }
                    LOG.debug("Waiting on " + getOnlineEntityGroupsAsPrintableString());
                }
                driver.close();
            }
            long now = System.currentTimeMillis();
            if ((now - lastMsg) >= msgInterval) {
                doMetrics();
                tryFServerReport(lastMsg, now);
                lastMsg = System.currentTimeMillis();
            }
            if (!this.stopped)
                this.sleeper.sleep();
        }
    } catch (Throwable t) {
        abort("Unhandled exception: " + t.getMessage(), t);
    }
    // Run shutdown.
    if (mxBean != null) {
        MBeans.unregister(mxBean);
        mxBean = null;
    }
    this.leases.closeAfterLeasesExpire();
    this.rpcServer.stop();
    if (this.splitThread != null) {
        this.splitThread.interruptIfNecessary();
    }

    if (this.killed) {
        // Just skip out w/o closing entityGroups. Used when testing.
    } else if (abortRequested) {
        closeUserEntityGroups(abortRequested); // Don't leave any open file
                                               // handles
        LOG.info("aborting server " + this.serverNameFromMasterPOV);
    } else {
        closeUserEntityGroups(abortRequested);
        closeAllScanners();
        LOG.info("stopping server " + this.serverNameFromMasterPOV);
    }
    globalEntityGroup.close();

    if (!this.killed) {
        waitOnAllEntityGroupsToClose(abortRequested);
        LOG.info("stopping server " + this.serverNameFromMasterPOV + "; all entityGroups closed.");
    }

    // Make sure the proxy is down.
    if (this.waspMaster != null) {
        WaspRPC.stopProxy(this.waspMaster);
        this.waspMaster = null;
    }
    this.leases.close();
    if (infoServer != null) {
        try {
            infoServer.stop();
        } catch (Exception e) {
            LOG.warn("Failed stop infoServer", e);
        }
    }

    if (this.broker != null) {
        try {
            this.broker.close();
        } catch (IOException e) {
            LOG.warn("Failed close broker", e);
        }
    }

    if (!killed) {
        join();
    }

    try {
        deleteMyEphemeralNode();
    } catch (KeeperException e) {
        LOG.warn("Failed deleting my ephemeral node", e);
    }
    // We may have failed to delete the znode at the previous step, but
    // we delete the file anyway: a second attempt to delete the znode is likely
    // to fail again.
    ZNodeClearer.deleteMyEphemeralNodeOnDisk();
    this.zooKeeper.close();
    LOG.info("stopping server " + this.serverNameFromMasterPOV + "; zookeeper connection closed.");

    LOG.info(Thread.currentThread().getName() + " exiting");
}

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From source file:com.alibaba.wasp.master.FMaster.java

License:Apache License

public void shutdown() throws IOException {
    if (mxBean != null) {
        MBeans.unregister(mxBean);
        mxBean = null;//  ww w . jav  a2  s. co m
    }
    if (this.assignmentManager != null)
        this.assignmentManager.shutdown();
    if (this.serverManager != null)
        this.serverManager.shutdownCluster();
    try {
        if (this.clusterStatusTracker != null) {
            this.clusterStatusTracker.setClusterDown();
        }
    } catch (KeeperException e) {
        LOG.error("ZooKeeper exception trying to set cluster as down in ZK", e);
    }
}

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From source file:org.apache.cassandra.hadoop.trackers.TrackerInitializer.java

License:Apache License

public static void stopTaskTracker() throws InterruptedException, IOException {
    MBeans.unregister(taskTrackerMBean);
    taskTrackerThread.interrupt();//from w w  w .ja  v  a2s . c  o m
    if (taskTracker != null) {
        taskTracker.shutdown();
    }
    taskTrackerThread.join(60000);
}

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