/** Method for logging exceptions thrown during the user function call */
protected void callUserFunctionAndLogException() {
try {
callUserFunction();
} catch (Exception e) {
if (LOG.isErrorEnabled()) {
LOG.error("Calling user function failed due to: {}", StringUtils.stringifyException(e));
}
throw new RuntimeException(e);
}
}
@Override
public List<TaskSubmissionResult> submitTasks(final List<TaskDeploymentDescriptor> tasks)
throws IOException {
final List<TaskSubmissionResult> submissionResultList =
new SerializableArrayList<TaskSubmissionResult>();
final List<Task> tasksToStart = new ArrayList<Task>();
// Make sure all tasks are fully registered before they are started
for (final TaskDeploymentDescriptor tdd : tasks) {
final JobID jobID = tdd.getJobID();
final ExecutionVertexID vertexID = tdd.getVertexID();
RuntimeEnvironment re;
// retrieve the registered cache files from job configuration and create the local tmp file.
Map<String, FutureTask<Path>> cpTasks = new HashMap<String, FutureTask<Path>>();
for (Entry<String, DistributedCacheEntry> e :
DistributedCache.readFileInfoFromConfig(tdd.getJobConfiguration())) {
FutureTask<Path> cp = this.fileCache.createTmpFile(e.getKey(), e.getValue(), jobID);
cpTasks.put(e.getKey(), cp);
}
try {
re =
new RuntimeEnvironment(
tdd,
this.memoryManager,
this.ioManager,
new TaskInputSplitProvider(jobID, vertexID, this.globalInputSplitProvider),
this.accumulatorProtocolProxy,
cpTasks);
} catch (Throwable t) {
final TaskSubmissionResult result =
new TaskSubmissionResult(vertexID, AbstractTaskResult.ReturnCode.DEPLOYMENT_ERROR);
result.setDescription(StringUtils.stringifyException(t));
LOG.error(result.getDescription(), t);
submissionResultList.add(result);
continue;
}
final Configuration jobConfiguration = tdd.getJobConfiguration();
// Register the task
Task task;
try {
task = createAndRegisterTask(vertexID, jobConfiguration, re);
} catch (InsufficientResourcesException e) {
final TaskSubmissionResult result =
new TaskSubmissionResult(
vertexID, AbstractTaskResult.ReturnCode.INSUFFICIENT_RESOURCES);
result.setDescription(e.getMessage());
LOG.error(result.getDescription(), e);
submissionResultList.add(result);
continue;
}
if (task == null) {
final TaskSubmissionResult result =
new TaskSubmissionResult(vertexID, AbstractTaskResult.ReturnCode.TASK_NOT_FOUND);
result.setDescription(
"Task " + re.getTaskNameWithIndex() + " (" + vertexID + ") was already running");
LOG.error(result.getDescription());
submissionResultList.add(result);
continue;
}
submissionResultList.add(
new TaskSubmissionResult(vertexID, AbstractTaskResult.ReturnCode.SUCCESS));
tasksToStart.add(task);
}
// Now start the tasks
for (final Task task : tasksToStart) {
task.startExecution();
}
return submissionResultList;
}
/**
* All parameters are obtained from the {@link GlobalConfiguration}, which must be loaded prior to
* instantiating the task manager.
*/
public TaskManager(ExecutionMode executionMode) throws Exception {
if (executionMode == null) {
throw new NullPointerException("Execution mode must not be null.");
}
LOG.info("Execution mode: " + executionMode);
// IMPORTANT! At this point, the GlobalConfiguration must have been read!
final InetSocketAddress jobManagerAddress;
{
LOG.info("Reading location of job manager from configuration");
final String address =
GlobalConfiguration.getString(ConfigConstants.JOB_MANAGER_IPC_ADDRESS_KEY, null);
final int port =
GlobalConfiguration.getInteger(
ConfigConstants.JOB_MANAGER_IPC_PORT_KEY,
ConfigConstants.DEFAULT_JOB_MANAGER_IPC_PORT);
if (address == null) {
throw new Exception("Job manager address not configured in the GlobalConfiguration.");
}
// Try to convert configured address to {@link InetAddress}
try {
final InetAddress tmpAddress = InetAddress.getByName(address);
jobManagerAddress = new InetSocketAddress(tmpAddress, port);
} catch (UnknownHostException e) {
LOG.fatal("Could not resolve JobManager host name.");
throw new Exception("Could not resolve JobManager host name: " + e.getMessage(), e);
}
LOG.info("Connecting to JobManager at: " + jobManagerAddress);
}
// Create RPC connection to the JobManager
try {
this.jobManager =
RPC.getProxy(JobManagerProtocol.class, jobManagerAddress, NetUtils.getSocketFactory());
} catch (IOException e) {
LOG.fatal("Could not connect to the JobManager: " + e.getMessage(), e);
throw new Exception("Failed to initialize connection to JobManager: " + e.getMessage(), e);
}
int ipcPort = GlobalConfiguration.getInteger(ConfigConstants.TASK_MANAGER_IPC_PORT_KEY, -1);
int dataPort = GlobalConfiguration.getInteger(ConfigConstants.TASK_MANAGER_DATA_PORT_KEY, -1);
if (ipcPort == -1) {
ipcPort = getAvailablePort();
}
if (dataPort == -1) {
dataPort = getAvailablePort();
}
// Determine our own public facing address and start the server
{
final InetAddress taskManagerAddress;
try {
taskManagerAddress = getTaskManagerAddress(jobManagerAddress);
} catch (Exception e) {
throw new RuntimeException(
"The TaskManager failed to determine its own network address.", e);
}
this.localInstanceConnectionInfo =
new InstanceConnectionInfo(taskManagerAddress, ipcPort, dataPort);
LOG.info("TaskManager connection information:" + this.localInstanceConnectionInfo);
// Start local RPC server
try {
this.taskManagerServer =
RPC.getServer(this, taskManagerAddress.getHostAddress(), ipcPort, IPC_HANDLER_COUNT);
this.taskManagerServer.start();
} catch (IOException e) {
LOG.fatal("Failed to start TaskManager server. " + e.getMessage(), e);
throw new Exception("Failed to start taskmanager server. " + e.getMessage(), e);
}
}
// Try to create local stub of the global input split provider
try {
this.globalInputSplitProvider =
RPC.getProxy(
InputSplitProviderProtocol.class, jobManagerAddress, NetUtils.getSocketFactory());
} catch (IOException e) {
LOG.fatal(e.getMessage(), e);
throw new Exception(
"Failed to initialize connection to global input split provider: " + e.getMessage(), e);
}
// Try to create local stub for the lookup service
try {
this.lookupService =
RPC.getProxy(ChannelLookupProtocol.class, jobManagerAddress, NetUtils.getSocketFactory());
} catch (IOException e) {
LOG.fatal(e.getMessage(), e);
throw new Exception("Failed to initialize channel lookup protocol. " + e.getMessage(), e);
}
// Try to create local stub for the accumulators
try {
this.accumulatorProtocolProxy =
RPC.getProxy(AccumulatorProtocol.class, jobManagerAddress, NetUtils.getSocketFactory());
} catch (IOException e) {
LOG.fatal("Failed to initialize accumulator protocol: " + e.getMessage(), e);
throw new Exception("Failed to initialize accumulator protocol: " + e.getMessage(), e);
}
// Load profiler if it should be used
if (GlobalConfiguration.getBoolean(ProfilingUtils.ENABLE_PROFILING_KEY, false)) {
final String profilerClassName =
GlobalConfiguration.getString(
ProfilingUtils.TASKMANAGER_CLASSNAME_KEY,
"org.apache.flink.runtime.profiling.impl.TaskManagerProfilerImpl");
this.profiler =
ProfilingUtils.loadTaskManagerProfiler(
profilerClassName, jobManagerAddress.getAddress(), this.localInstanceConnectionInfo);
if (this.profiler == null) {
LOG.error("Cannot find class name for the profiler.");
} else {
LOG.info("Profiling of jobs is enabled.");
}
} else {
this.profiler = null;
LOG.info("Profiling of jobs is disabled.");
}
// Get the directory for storing temporary files
final String[] tmpDirPaths =
GlobalConfiguration.getString(
ConfigConstants.TASK_MANAGER_TMP_DIR_KEY,
ConfigConstants.DEFAULT_TASK_MANAGER_TMP_PATH)
.split(",|" + File.pathSeparator);
checkTempDirs(tmpDirPaths);
int numBuffers =
GlobalConfiguration.getInteger(
ConfigConstants.TASK_MANAGER_NETWORK_NUM_BUFFERS_KEY,
ConfigConstants.DEFAULT_TASK_MANAGER_NETWORK_NUM_BUFFERS);
int bufferSize =
GlobalConfiguration.getInteger(
ConfigConstants.TASK_MANAGER_NETWORK_BUFFER_SIZE_KEY,
ConfigConstants.DEFAULT_TASK_MANAGER_NETWORK_BUFFER_SIZE);
// Initialize the channel manager
try {
NetworkConnectionManager networkConnectionManager = null;
switch (executionMode) {
case LOCAL:
networkConnectionManager = new LocalConnectionManager();
break;
case CLUSTER:
int numInThreads =
GlobalConfiguration.getInteger(
ConfigConstants.TASK_MANAGER_NET_NUM_IN_THREADS_KEY,
ConfigConstants.DEFAULT_TASK_MANAGER_NET_NUM_IN_THREADS);
int numOutThreads =
GlobalConfiguration.getInteger(
ConfigConstants.TASK_MANAGER_NET_NUM_OUT_THREADS_KEY,
ConfigConstants.DEFAULT_TASK_MANAGER_NET_NUM_OUT_THREADS);
int lowWaterMark =
GlobalConfiguration.getInteger(
ConfigConstants.TASK_MANAGER_NET_NETTY_LOW_WATER_MARK,
ConfigConstants.DEFAULT_TASK_MANAGER_NET_NETTY_LOW_WATER_MARK);
int highWaterMark =
GlobalConfiguration.getInteger(
ConfigConstants.TASK_MANAGER_NET_NETTY_HIGH_WATER_MARK,
ConfigConstants.DEFAULT_TASK_MANAGER_NET_NETTY_HIGH_WATER_MARK);
networkConnectionManager =
new NettyConnectionManager(
localInstanceConnectionInfo.address(),
localInstanceConnectionInfo.dataPort(),
bufferSize,
numInThreads,
numOutThreads,
lowWaterMark,
highWaterMark);
break;
}
channelManager =
new ChannelManager(
lookupService,
localInstanceConnectionInfo,
numBuffers,
bufferSize,
networkConnectionManager);
} catch (IOException ioe) {
LOG.error(StringUtils.stringifyException(ioe));
throw new Exception("Failed to instantiate ChannelManager.", ioe);
}
// initialize the number of slots
{
int slots = GlobalConfiguration.getInteger(ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS, -1);
if (slots == -1) {
slots = 1;
LOG.info("Number of task slots not configured. Creating one task slot.");
} else if (slots <= 0) {
throw new Exception("Illegal value for the number of task slots: " + slots);
} else {
LOG.info("Creating " + slots + " task slot(s).");
}
this.numberOfSlots = slots;
}
this.hardwareDescription = HardwareDescriptionFactory.extractFromSystem();
// initialize the memory manager
{
// Check whether the memory size has been explicitly configured.
final long configuredMemorySize =
GlobalConfiguration.getInteger(ConfigConstants.TASK_MANAGER_MEMORY_SIZE_KEY, -1);
final long memorySize;
if (configuredMemorySize == -1) {
// no manually configured memory. take a relative fraction of the free heap space
float fraction =
GlobalConfiguration.getFloat(
ConfigConstants.TASK_MANAGER_MEMORY_FRACTION_KEY,
ConfigConstants.DEFAULT_MEMORY_MANAGER_MEMORY_FRACTION);
memorySize = (long) (this.hardwareDescription.getSizeOfFreeMemory() * fraction);
LOG.info("Using " + fraction + " of the free heap space for managed memory.");
} else if (configuredMemorySize <= 0) {
throw new Exception(
"Invalid value for Memory Manager memory size: " + configuredMemorySize);
} else {
memorySize = configuredMemorySize << 20;
}
final int pageSize =
GlobalConfiguration.getInteger(
ConfigConstants.TASK_MANAGER_NETWORK_BUFFER_SIZE_KEY,
ConfigConstants.DEFAULT_TASK_MANAGER_NETWORK_BUFFER_SIZE);
// Initialize the memory manager
LOG.info(
"Initializing memory manager with "
+ (memorySize >>> 20)
+ " megabytes of memory. "
+ "Page size is "
+ pageSize
+ " bytes.");
try {
@SuppressWarnings("unused")
final boolean lazyAllocation =
GlobalConfiguration.getBoolean(
ConfigConstants.TASK_MANAGER_MEMORY_LAZY_ALLOCATION_KEY,
ConfigConstants.DEFAULT_TASK_MANAGER_MEMORY_LAZY_ALLOCATION);
this.memoryManager = new DefaultMemoryManager(memorySize, this.numberOfSlots, pageSize);
} catch (Throwable t) {
LOG.fatal(
"Unable to initialize memory manager with "
+ (memorySize >>> 20)
+ " megabytes of memory.",
t);
throw new Exception("Unable to initialize memory manager.", t);
}
}
this.ioManager = new IOManager(tmpDirPaths);
this.heartbeatThread =
new Thread() {
@Override
public void run() {
runHeartbeatLoop();
}
};
this.heartbeatThread.setName("Heartbeat Thread");
this.heartbeatThread.start();
// --------------------------------------------------------------------
// Memory Usage
// --------------------------------------------------------------------
final MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
final List<GarbageCollectorMXBean> gcMXBeans = ManagementFactory.getGarbageCollectorMXBeans();
LOG.info(getMemoryUsageStatsAsString(memoryMXBean));
boolean startMemoryUsageLogThread =
GlobalConfiguration.getBoolean(
ConfigConstants.TASK_MANAGER_DEBUG_MEMORY_USAGE_START_LOG_THREAD,
ConfigConstants.DEFAULT_TASK_MANAGER_DEBUG_MEMORY_USAGE_START_LOG_THREAD);
if (startMemoryUsageLogThread && LOG.isDebugEnabled()) {
final int logIntervalMs =
GlobalConfiguration.getInteger(
ConfigConstants.TASK_MANAGER_DEBUG_MEMORY_USAGE_LOG_INTERVAL_MS,
ConfigConstants.DEFAULT_TASK_MANAGER_DEBUG_MEMORY_USAGE_LOG_INTERVAL_MS);
new Thread(
new Runnable() {
@Override
public void run() {
try {
while (!isShutDown()) {
Thread.sleep(logIntervalMs);
LOG.debug(getMemoryUsageStatsAsString(memoryMXBean));
LOG.debug(getGarbageCollectorStatsAsString(gcMXBeans));
}
} catch (InterruptedException e) {
LOG.warn("Unexpected interruption of memory usage logger thread.");
}
}
})
.start();
}
}
