Examples with RetryPolicy org.apache.hadoop.io.retry.RetryPolicy used on opensource projects

Example 6 with RetryPolicy

use of org.apache.hadoop.io.retry.RetryPolicy in project hadoop by apache.

the class NMProxy method createNMProxy.

public static <T> T createNMProxy(final Configuration conf, final Class<T> protocol, final UserGroupInformation ugi, final YarnRPC rpc, final InetSocketAddress serverAddress) {
    RetryPolicy retryPolicy = createRetryPolicy(conf, YarnConfiguration.CLIENT_NM_CONNECT_MAX_WAIT_MS, YarnConfiguration.DEFAULT_CLIENT_NM_CONNECT_MAX_WAIT_MS, YarnConfiguration.CLIENT_NM_CONNECT_RETRY_INTERVAL_MS, YarnConfiguration.DEFAULT_CLIENT_NM_CONNECT_RETRY_INTERVAL_MS);
    Configuration confClone = new Configuration(conf);
    confClone.setInt(CommonConfigurationKeysPublic.IPC_CLIENT_CONNECT_MAX_RETRIES_KEY, 0);
    confClone.setInt(CommonConfigurationKeysPublic.IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SOCKET_TIMEOUTS_KEY, 0);
    return createRetriableProxy(confClone, protocol, ugi, rpc, serverAddress, retryPolicy);
}

Example 7 with RetryPolicy

use of org.apache.hadoop.io.retry.RetryPolicy in project hadoop by apache.

the class RMProxy method createRMProxy.

/**
   * @deprecated
   * This method is deprecated and is not used by YARN internally any more.
   * To create a proxy to the RM, use ClientRMProxy#createRMProxy or
   * ServerRMProxy#createRMProxy.
   *
   * Create a proxy to the ResourceManager at the specified address.
   *
   * @param conf Configuration to generate retry policy
   * @param protocol Protocol for the proxy
   * @param rmAddress Address of the ResourceManager
   * @param <T> Type information of the proxy
   * @return Proxy to the RM
   * @throws IOException
   */
@Deprecated
public static <T> T createRMProxy(final Configuration conf, final Class<T> protocol, InetSocketAddress rmAddress) throws IOException {
    RetryPolicy retryPolicy = createRetryPolicy(conf, HAUtil.isHAEnabled(conf));
    T proxy = RMProxy.<T>getProxy(conf, protocol, rmAddress);
    LOG.info("Connecting to ResourceManager at " + rmAddress);
    return (T) RetryProxy.create(protocol, proxy, retryPolicy);
}

Example 8 with RetryPolicy

use of org.apache.hadoop.io.retry.RetryPolicy in project hadoop by apache.

the class RMProxy method createRetryPolicy.

/**
   * Fetch retry policy from Configuration and create the
   * retry policy with specified retryTime and retry interval.
   */
protected static RetryPolicy createRetryPolicy(Configuration conf, long retryTime, long retryInterval, boolean isHAEnabled) {
    long rmConnectWaitMS = retryTime;
    long rmConnectionRetryIntervalMS = retryInterval;
    boolean waitForEver = (rmConnectWaitMS == -1);
    if (!waitForEver) {
        if (rmConnectWaitMS < 0) {
            throw new YarnRuntimeException("Invalid Configuration. " + YarnConfiguration.RESOURCEMANAGER_CONNECT_MAX_WAIT_MS + " can be -1, but can not be other negative numbers");
        }
        // try connect once
        if (rmConnectWaitMS < rmConnectionRetryIntervalMS) {
            LOG.warn(YarnConfiguration.RESOURCEMANAGER_CONNECT_MAX_WAIT_MS + " is smaller than " + YarnConfiguration.RESOURCEMANAGER_CONNECT_RETRY_INTERVAL_MS + ". Only try connect once.");
            rmConnectWaitMS = 0;
        }
    }
    // Handle HA case first
    if (isHAEnabled) {
        final long failoverSleepBaseMs = conf.getLong(YarnConfiguration.CLIENT_FAILOVER_SLEEPTIME_BASE_MS, rmConnectionRetryIntervalMS);
        final long failoverSleepMaxMs = conf.getLong(YarnConfiguration.CLIENT_FAILOVER_SLEEPTIME_MAX_MS, rmConnectionRetryIntervalMS);
        int maxFailoverAttempts = conf.getInt(YarnConfiguration.CLIENT_FAILOVER_MAX_ATTEMPTS, -1);
        if (maxFailoverAttempts == -1) {
            if (waitForEver) {
                maxFailoverAttempts = Integer.MAX_VALUE;
            } else {
                maxFailoverAttempts = (int) (rmConnectWaitMS / failoverSleepBaseMs);
            }
        }
        return RetryPolicies.failoverOnNetworkException(RetryPolicies.TRY_ONCE_THEN_FAIL, maxFailoverAttempts, failoverSleepBaseMs, failoverSleepMaxMs);
    }
    if (rmConnectionRetryIntervalMS < 0) {
        throw new YarnRuntimeException("Invalid Configuration. " + YarnConfiguration.RESOURCEMANAGER_CONNECT_RETRY_INTERVAL_MS + " should not be negative.");
    }
    RetryPolicy retryPolicy = null;
    if (waitForEver) {
        retryPolicy = RetryPolicies.retryForeverWithFixedSleep(rmConnectionRetryIntervalMS, TimeUnit.MILLISECONDS);
    } else {
        retryPolicy = RetryPolicies.retryUpToMaximumTimeWithFixedSleep(rmConnectWaitMS, rmConnectionRetryIntervalMS, TimeUnit.MILLISECONDS);
    }
    Map<Class<? extends Exception>, RetryPolicy> exceptionToPolicyMap = new HashMap<Class<? extends Exception>, RetryPolicy>();
    exceptionToPolicyMap.put(EOFException.class, retryPolicy);
    exceptionToPolicyMap.put(ConnectException.class, retryPolicy);
    exceptionToPolicyMap.put(NoRouteToHostException.class, retryPolicy);
    exceptionToPolicyMap.put(UnknownHostException.class, retryPolicy);
    exceptionToPolicyMap.put(ConnectTimeoutException.class, retryPolicy);
    exceptionToPolicyMap.put(RetriableException.class, retryPolicy);
    exceptionToPolicyMap.put(SocketException.class, retryPolicy);
    exceptionToPolicyMap.put(StandbyException.class, retryPolicy);
    // YARN-4288: local IOException is also possible.
    exceptionToPolicyMap.put(IOException.class, retryPolicy);
    // Not retry on remote IO exception.
    return RetryPolicies.retryOtherThanRemoteException(RetryPolicies.TRY_ONCE_THEN_FAIL, exceptionToPolicyMap);
}

Example 9 with RetryPolicy

use of org.apache.hadoop.io.retry.RetryPolicy in project hadoop by apache.

the class RMProxy method createRMProxy.

/**
   * Currently, used by NodeManagers only.
   * Create a proxy for the specified protocol. For non-HA,
   * this is a direct connection to the ResourceManager address. When HA is
   * enabled, the proxy handles the failover between the ResourceManagers as
   * well.
   */
@Private
protected static <T> T createRMProxy(final Configuration configuration, final Class<T> protocol, RMProxy instance, final long retryTime, final long retryInterval) throws IOException {
    YarnConfiguration conf = (configuration instanceof YarnConfiguration) ? (YarnConfiguration) configuration : new YarnConfiguration(configuration);
    RetryPolicy retryPolicy = createRetryPolicy(conf, retryTime, retryInterval, HAUtil.isHAEnabled(conf));
    return newProxyInstance(conf, protocol, instance, retryPolicy);
}

Example 10 with RetryPolicy

use of org.apache.hadoop.io.retry.RetryPolicy in project hadoop by apache.

the class RequestHedgingRMFailoverProxyProvider method createRetriableProxy.

@SuppressWarnings("unchecked")
protected T createRetriableProxy() {
    try {
        // Create proxy that can retry exceptions properly.
        RetryPolicy retryPolicy = RMProxy.createRetryPolicy(conf, false);
        InetSocketAddress rmAddress = rmProxy.getRMAddress(conf, protocol);
        T proxy = RMProxy.<T>getProxy(conf, protocol, rmAddress);
        return (T) RetryProxy.create(protocol, proxy, retryPolicy);
    } catch (IOException ioe) {
        LOG.error("Unable to create proxy to the ResourceManager " + HAUtil.getRMHAId(conf), ioe);
        return null;
    }
}