http://git-wip-us.apache.org/repos/asf/ignite/blob/11b00873/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/impl/v2/HadoopV2TaskContext.java ---------------------------------------------------------------------- diff --git a/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/impl/v2/HadoopV2TaskContext.java b/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/impl/v2/HadoopV2TaskContext.java new file mode 100644 index 0000000..4c030b4 --- /dev/null +++ b/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/impl/v2/HadoopV2TaskContext.java @@ -0,0 +1,560 @@ +/* + * 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.ignite.internal.processors.hadoop.impl.v2; + +import java.io.DataInput; +import java.io.File; +import java.io.IOException; +import java.security.PrivilegedExceptionAction; +import java.util.Comparator; +import java.util.UUID; +import java.util.concurrent.Callable; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FSDataInputStream; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.LocalFileSystem; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.io.Text; +import org.apache.hadoop.io.Writable; +import org.apache.hadoop.io.serializer.Deserializer; +import org.apache.hadoop.io.serializer.Serialization; +import org.apache.hadoop.io.serializer.SerializationFactory; +import org.apache.hadoop.io.serializer.WritableSerialization; +import org.apache.hadoop.mapred.JobConf; +import org.apache.hadoop.mapred.JobContextImpl; +import org.apache.hadoop.mapred.JobID; +import org.apache.hadoop.mapred.TaskAttemptID; +import org.apache.hadoop.mapred.TaskID; +import org.apache.hadoop.mapreduce.JobContext; +import org.apache.hadoop.mapreduce.JobSubmissionFiles; +import org.apache.hadoop.mapreduce.MRJobConfig; +import org.apache.hadoop.mapreduce.TaskType; +import org.apache.hadoop.security.UserGroupInformation; +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.internal.processors.hadoop.HadoopClassLoader; +import org.apache.ignite.internal.processors.hadoop.HadoopCommonUtils; +import org.apache.ignite.internal.processors.hadoop.HadoopInputSplit; +import org.apache.ignite.internal.processors.hadoop.HadoopJob; +import org.apache.ignite.internal.processors.hadoop.HadoopJobId; +import org.apache.ignite.internal.processors.hadoop.HadoopPartitioner; +import org.apache.ignite.internal.processors.hadoop.HadoopSerialization; +import org.apache.ignite.internal.processors.hadoop.HadoopTask; +import org.apache.ignite.internal.processors.hadoop.HadoopTaskCancelledException; +import org.apache.ignite.internal.processors.hadoop.HadoopTaskContext; +import org.apache.ignite.internal.processors.hadoop.HadoopTaskInfo; +import org.apache.ignite.internal.processors.hadoop.HadoopTaskType; +import org.apache.ignite.internal.processors.hadoop.counter.HadoopCounter; +import org.apache.ignite.internal.processors.hadoop.counter.HadoopCounters; +import org.apache.ignite.internal.processors.hadoop.counter.HadoopCountersImpl; +import org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopLazyConcurrentMap; +import org.apache.ignite.internal.processors.hadoop.impl.v1.HadoopV1CleanupTask; +import org.apache.ignite.internal.processors.hadoop.impl.v1.HadoopV1MapTask; +import org.apache.ignite.internal.processors.hadoop.impl.v1.HadoopV1Partitioner; +import org.apache.ignite.internal.processors.hadoop.impl.v1.HadoopV1ReduceTask; +import org.apache.ignite.internal.processors.hadoop.impl.v1.HadoopV1SetupTask; +import org.apache.ignite.internal.processors.igfs.IgfsUtils; +import org.apache.ignite.internal.util.typedef.F; +import org.apache.ignite.internal.util.typedef.internal.A; +import org.jetbrains.annotations.Nullable; + +import static org.apache.ignite.internal.processors.hadoop.impl.HadoopUtils.jobLocalDir; +import static org.apache.ignite.internal.processors.hadoop.impl.HadoopUtils.taskLocalDir; +import static org.apache.ignite.internal.processors.hadoop.impl.HadoopUtils.transformException; +import static org.apache.ignite.internal.processors.hadoop.impl.HadoopUtils.unwrapSplit; +import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopFileSystemCacheUtils.FsCacheKey; +import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopFileSystemCacheUtils.createHadoopLazyConcurrentMap; +import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopFileSystemCacheUtils.fileSystemForMrUserWithCaching; +import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_PREFER_LOCAL_WRITES; + +/** + * Context for task execution. + */ +public class HadoopV2TaskContext extends HadoopTaskContext { + /** */ + private static final boolean COMBINE_KEY_GROUPING_SUPPORTED; + + /** Lazy per-user file system cache used by the Hadoop task. */ + private static final HadoopLazyConcurrentMap<FsCacheKey, FileSystem> fsMap + = createHadoopLazyConcurrentMap(); + + /** + * This method is called with reflection upon Job finish with class loader of each task. + * This will clean up all the Fs created for specific task. + * Each class loader sees uses its own instance of <code>fsMap<code/> since the class loaders + * are different. + * + * @throws IgniteCheckedException On error. + */ + public static void close() throws IgniteCheckedException { + fsMap.close(); + } + + /** + * Check for combiner grouping support (available since Hadoop 2.3). + */ + static { + boolean ok; + + try { + JobContext.class.getDeclaredMethod("getCombinerKeyGroupingComparator"); + + ok = true; + } + catch (NoSuchMethodException ignore) { + ok = false; + } + + COMBINE_KEY_GROUPING_SUPPORTED = ok; + } + + /** Flag is set if new context-object code is used for running the mapper. */ + private final boolean useNewMapper; + + /** Flag is set if new context-object code is used for running the reducer. */ + private final boolean useNewReducer; + + /** Flag is set if new context-object code is used for running the combiner. */ + private final boolean useNewCombiner; + + /** */ + private final JobContextImpl jobCtx; + + /** Set if task is to cancelling. */ + private volatile boolean cancelled; + + /** Current task. */ + private volatile HadoopTask task; + + /** Local node ID */ + private final UUID locNodeId; + + /** Counters for task. */ + private final HadoopCounters cntrs = new HadoopCountersImpl(); + + /** + * @param taskInfo Task info. + * @param job Job. + * @param jobId Job ID. + * @param locNodeId Local node ID. + * @param jobConfDataInput DataInput for read JobConf. + */ + public HadoopV2TaskContext(HadoopTaskInfo taskInfo, HadoopJob job, HadoopJobId jobId, + @Nullable UUID locNodeId, DataInput jobConfDataInput) throws IgniteCheckedException { + super(taskInfo, job); + this.locNodeId = locNodeId; + + // Before create JobConf instance we should set new context class loader. + ClassLoader oldLdr = HadoopCommonUtils.setContextClassLoader(getClass().getClassLoader()); + + try { + JobConf jobConf = new JobConf(); + + try { + jobConf.readFields(jobConfDataInput); + } + catch (IOException e) { + throw new IgniteCheckedException(e); + } + + // For map-reduce jobs prefer local writes. + jobConf.setBooleanIfUnset(PARAM_IGFS_PREFER_LOCAL_WRITES, true); + + jobCtx = new JobContextImpl(jobConf, new JobID(jobId.globalId().toString(), jobId.localId())); + + useNewMapper = jobConf.getUseNewMapper(); + useNewReducer = jobConf.getUseNewReducer(); + useNewCombiner = jobConf.getCombinerClass() == null; + } + finally { + HadoopCommonUtils.restoreContextClassLoader(oldLdr); + } + } + + /** {@inheritDoc} */ + @Override public <T extends HadoopCounter> T counter(String grp, String name, Class<T> cls) { + return cntrs.counter(grp, name, cls); + } + + /** {@inheritDoc} */ + @Override public HadoopCounters counters() { + return cntrs; + } + + /** + * Creates appropriate task from current task info. + * + * @return Task. + */ + private HadoopTask createTask() { + boolean isAbort = taskInfo().type() == HadoopTaskType.ABORT; + + switch (taskInfo().type()) { + case SETUP: + return useNewMapper ? new HadoopV2SetupTask(taskInfo()) : new HadoopV1SetupTask(taskInfo()); + + case MAP: + return useNewMapper ? new HadoopV2MapTask(taskInfo()) : new HadoopV1MapTask(taskInfo()); + + case REDUCE: + return useNewReducer ? new HadoopV2ReduceTask(taskInfo(), true) : + new HadoopV1ReduceTask(taskInfo(), true); + + case COMBINE: + return useNewCombiner ? new HadoopV2ReduceTask(taskInfo(), false) : + new HadoopV1ReduceTask(taskInfo(), false); + + case COMMIT: + case ABORT: + return useNewReducer ? new HadoopV2CleanupTask(taskInfo(), isAbort) : + new HadoopV1CleanupTask(taskInfo(), isAbort); + + default: + return null; + } + } + + /** {@inheritDoc} */ + @Override public void run() throws IgniteCheckedException { + ClassLoader oldLdr = HadoopCommonUtils.setContextClassLoader(jobConf().getClassLoader()); + + try { + try { + task = createTask(); + } + catch (Throwable e) { + if (e instanceof Error) + throw e; + + throw transformException(e); + } + + if (cancelled) + throw new HadoopTaskCancelledException("Task cancelled."); + + try { + task.run(this); + } + catch (Throwable e) { + if (e instanceof Error) + throw e; + + throw transformException(e); + } + } + finally { + task = null; + + HadoopCommonUtils.restoreContextClassLoader(oldLdr); + } + } + + /** {@inheritDoc} */ + @Override public void cancel() { + cancelled = true; + + HadoopTask t = task; + + if (t != null) + t.cancel(); + } + + /** {@inheritDoc} */ + @Override public void prepareTaskEnvironment() throws IgniteCheckedException { + File locDir; + + switch(taskInfo().type()) { + case MAP: + case REDUCE: + job().prepareTaskEnvironment(taskInfo()); + + locDir = taskLocalDir(locNodeId, taskInfo()); + + break; + + default: + locDir = jobLocalDir(locNodeId, taskInfo().jobId()); + } + + ClassLoader oldLdr = HadoopCommonUtils.setContextClassLoader(jobConf().getClassLoader()); + + try { + FileSystem.get(jobConf()); + + LocalFileSystem locFs = FileSystem.getLocal(jobConf()); + + locFs.setWorkingDirectory(new Path(locDir.getAbsolutePath())); + } + catch (Throwable e) { + if (e instanceof Error) + throw (Error)e; + + throw transformException(e); + } + finally { + HadoopCommonUtils.restoreContextClassLoader(oldLdr); + } + } + + /** {@inheritDoc} */ + @Override public void cleanupTaskEnvironment() throws IgniteCheckedException { + job().cleanupTaskEnvironment(taskInfo()); + } + + /** + * Creates Hadoop attempt ID. + * + * @return Attempt ID. + */ + public TaskAttemptID attemptId() { + TaskID tid = new TaskID(jobCtx.getJobID(), taskType(taskInfo().type()), taskInfo().taskNumber()); + + return new TaskAttemptID(tid, taskInfo().attempt()); + } + + /** + * @param type Task type. + * @return Hadoop task type. + */ + private TaskType taskType(HadoopTaskType type) { + switch (type) { + case SETUP: + return TaskType.JOB_SETUP; + case MAP: + case COMBINE: + return TaskType.MAP; + + case REDUCE: + return TaskType.REDUCE; + + case COMMIT: + case ABORT: + return TaskType.JOB_CLEANUP; + + default: + return null; + } + } + + /** + * Gets job configuration of the task. + * + * @return Job configuration. + */ + public JobConf jobConf() { + return jobCtx.getJobConf(); + } + + /** + * Gets job context of the task. + * + * @return Job context. + */ + public JobContextImpl jobContext() { + return jobCtx; + } + + /** {@inheritDoc} */ + @Override public HadoopPartitioner partitioner() throws IgniteCheckedException { + Class<?> partClsOld = jobConf().getClass("mapred.partitioner.class", null); + + if (partClsOld != null) + return new HadoopV1Partitioner(jobConf().getPartitionerClass(), jobConf()); + + try { + return new HadoopV2Partitioner(jobCtx.getPartitionerClass(), jobConf()); + } + catch (ClassNotFoundException e) { + throw new IgniteCheckedException(e); + } + } + + /** + * Gets serializer for specified class. + * + * @param cls Class. + * @param jobConf Job configuration. + * @return Appropriate serializer. + */ + @SuppressWarnings("unchecked") + private HadoopSerialization getSerialization(Class<?> cls, Configuration jobConf) throws IgniteCheckedException { + A.notNull(cls, "cls"); + + SerializationFactory factory = new SerializationFactory(jobConf); + + Serialization<?> serialization = factory.getSerialization(cls); + + if (serialization == null) + throw new IgniteCheckedException("Failed to find serialization for: " + cls.getName()); + + if (serialization.getClass() == WritableSerialization.class) + return new HadoopWritableSerialization((Class<? extends Writable>)cls); + + return new HadoopSerializationWrapper(serialization, cls); + } + + /** {@inheritDoc} */ + @Override public HadoopSerialization keySerialization() throws IgniteCheckedException { + return getSerialization(jobCtx.getMapOutputKeyClass(), jobConf()); + } + + /** {@inheritDoc} */ + @Override public HadoopSerialization valueSerialization() throws IgniteCheckedException { + return getSerialization(jobCtx.getMapOutputValueClass(), jobConf()); + } + + /** {@inheritDoc} */ + @Override public Comparator<Object> sortComparator() { + return (Comparator<Object>)jobCtx.getSortComparator(); + } + + /** {@inheritDoc} */ + @Override public Comparator<Object> groupComparator() { + Comparator<?> res; + + switch (taskInfo().type()) { + case COMBINE: + res = COMBINE_KEY_GROUPING_SUPPORTED ? + jobContext().getCombinerKeyGroupingComparator() : jobContext().getGroupingComparator(); + + break; + + case REDUCE: + res = jobContext().getGroupingComparator(); + + break; + + default: + return null; + } + + if (res != null && res.getClass() != sortComparator().getClass()) + return (Comparator<Object>)res; + + return null; + } + + /** + * @param split Split. + * @return Native Hadoop split. + * @throws IgniteCheckedException if failed. + */ + @SuppressWarnings("unchecked") + public Object getNativeSplit(HadoopInputSplit split) throws IgniteCheckedException { + if (split instanceof HadoopExternalSplit) + return readExternalSplit((HadoopExternalSplit)split); + + if (split instanceof HadoopSplitWrapper) + return unwrapSplit((HadoopSplitWrapper)split); + + throw new IllegalStateException("Unknown split: " + split); + } + + /** + * @param split External split. + * @return Native input split. + * @throws IgniteCheckedException If failed. + */ + @SuppressWarnings("unchecked") + private Object readExternalSplit(HadoopExternalSplit split) throws IgniteCheckedException { + Path jobDir = new Path(jobConf().get(MRJobConfig.MAPREDUCE_JOB_DIR)); + + FileSystem fs; + + try { + // This assertion uses .startsWith() instead of .equals() because task class loaders may + // be reused between tasks of the same job. + assert ((HadoopClassLoader)getClass().getClassLoader()).name() + .startsWith(HadoopClassLoader.nameForTask(taskInfo(), true)); + + // We also cache Fs there, all them will be cleared explicitly upon the Job end. + fs = fileSystemForMrUserWithCaching(jobDir.toUri(), jobConf(), fsMap); + } + catch (IOException e) { + throw new IgniteCheckedException(e); + } + + try ( + FSDataInputStream in = fs.open(JobSubmissionFiles.getJobSplitFile(jobDir))) { + + in.seek(split.offset()); + + String clsName = Text.readString(in); + + Class<?> cls = jobConf().getClassByName(clsName); + + assert cls != null; + + Serialization serialization = new SerializationFactory(jobConf()).getSerialization(cls); + + Deserializer deserializer = serialization.getDeserializer(cls); + + deserializer.open(in); + + Object res = deserializer.deserialize(null); + + deserializer.close(); + + assert res != null; + + return res; + } + catch (IOException | ClassNotFoundException e) { + throw new IgniteCheckedException(e); + } + } + + /** {@inheritDoc} */ + @Override public <T> T runAsJobOwner(final Callable<T> c) throws IgniteCheckedException { + String user = job.info().user(); + + user = IgfsUtils.fixUserName(user); + + assert user != null; + + String ugiUser; + + try { + UserGroupInformation currUser = UserGroupInformation.getCurrentUser(); + + assert currUser != null; + + ugiUser = currUser.getShortUserName(); + } + catch (IOException ioe) { + throw new IgniteCheckedException(ioe); + } + + try { + if (F.eq(user, ugiUser)) + // if current UGI context user is the same, do direct call: + return c.call(); + else { + UserGroupInformation ugi = UserGroupInformation.getBestUGI(null, user); + + return ugi.doAs(new PrivilegedExceptionAction<T>() { + @Override public T run() throws Exception { + return c.call(); + } + }); + } + } + catch (Exception e) { + throw new IgniteCheckedException(e); + } + } +} \ No newline at end of file
http://git-wip-us.apache.org/repos/asf/ignite/blob/11b00873/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/impl/v2/HadoopWritableSerialization.java ---------------------------------------------------------------------- diff --git a/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/impl/v2/HadoopWritableSerialization.java b/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/impl/v2/HadoopWritableSerialization.java new file mode 100644 index 0000000..ebf49fd --- /dev/null +++ b/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/impl/v2/HadoopWritableSerialization.java @@ -0,0 +1,75 @@ +/* + * 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.ignite.internal.processors.hadoop.impl.v2; + +import java.io.DataInput; +import java.io.DataOutput; +import java.io.IOException; +import org.apache.hadoop.io.Writable; +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.internal.processors.hadoop.HadoopSerialization; +import org.apache.ignite.internal.util.typedef.internal.U; +import org.jetbrains.annotations.Nullable; + +/** + * Optimized serialization for Hadoop {@link Writable} types. + */ +public class HadoopWritableSerialization implements HadoopSerialization { + /** */ + private final Class<? extends Writable> cls; + + /** + * @param cls Class. + */ + public HadoopWritableSerialization(Class<? extends Writable> cls) { + assert cls != null; + + this.cls = cls; + } + + /** {@inheritDoc} */ + @Override public void write(DataOutput out, Object obj) throws IgniteCheckedException { + assert cls.isAssignableFrom(obj.getClass()) : cls + " " + obj.getClass(); + + try { + ((Writable)obj).write(out); + } + catch (IOException e) { + throw new IgniteCheckedException(e); + } + } + + /** {@inheritDoc} */ + @Override public Object read(DataInput in, @Nullable Object obj) throws IgniteCheckedException { + Writable w = obj == null ? U.newInstance(cls) : cls.cast(obj); + + try { + w.readFields(in); + } + catch (IOException e) { + throw new IgniteCheckedException(e); + } + + return w; + } + + /** {@inheritDoc} */ + @Override public void close() { + // No-op. + } +} \ No newline at end of file http://git-wip-us.apache.org/repos/asf/ignite/blob/11b00873/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/jobtracker/HadoopJobMetadata.java ---------------------------------------------------------------------- diff --git a/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/jobtracker/HadoopJobMetadata.java b/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/jobtracker/HadoopJobMetadata.java deleted file mode 100644 index 090b336..0000000 --- a/modules/hadoop-impl/src/main/java/org/apache/ignite/internal/processors/hadoop/jobtracker/HadoopJobMetadata.java +++ /dev/null @@ -1,316 +0,0 @@ -/* - * 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.ignite.internal.processors.hadoop.jobtracker; - -import java.io.Externalizable; -import java.io.IOException; -import java.io.ObjectInput; -import java.io.ObjectOutput; -import java.util.Collection; -import java.util.Map; -import java.util.UUID; -import org.apache.ignite.internal.processors.hadoop.HadoopInputSplit; -import org.apache.ignite.internal.processors.hadoop.HadoopJobId; -import org.apache.ignite.internal.processors.hadoop.HadoopJobInfo; -import org.apache.ignite.internal.processors.hadoop.HadoopJobPhase; -import org.apache.ignite.internal.processors.hadoop.HadoopMapReducePlan; -import org.apache.ignite.internal.processors.hadoop.counter.HadoopCounters; -import org.apache.ignite.internal.processors.hadoop.counter.HadoopCountersImpl; -import org.apache.ignite.internal.processors.hadoop.taskexecutor.external.HadoopProcessDescriptor; -import org.apache.ignite.internal.util.tostring.GridToStringExclude; -import org.apache.ignite.internal.util.tostring.GridToStringInclude; -import org.apache.ignite.internal.util.typedef.internal.S; -import org.apache.ignite.internal.util.typedef.internal.U; - -import static org.apache.ignite.internal.processors.hadoop.HadoopJobPhase.PHASE_SETUP; - -/** - * Hadoop job metadata. Internal object used for distributed job state tracking. - */ -public class HadoopJobMetadata implements Externalizable { - /** */ - private static final long serialVersionUID = 0L; - - /** Job ID. */ - private HadoopJobId jobId; - - /** Job info. */ - private HadoopJobInfo jobInfo; - - /** Node submitted job. */ - private UUID submitNodeId; - - /** Map-reduce plan. */ - private HadoopMapReducePlan mrPlan; - - /** Pending splits for which mapper should be executed. */ - private Map<HadoopInputSplit, Integer> pendingSplits; - - /** Pending reducers. */ - private Collection<Integer> pendingReducers; - - /** Reducers addresses. */ - @GridToStringInclude - private Map<Integer, HadoopProcessDescriptor> reducersAddrs; - - /** Job phase. */ - private HadoopJobPhase phase = PHASE_SETUP; - - /** Fail cause. */ - @GridToStringExclude - private Throwable failCause; - - /** Version. */ - private long ver; - - /** Job counters */ - private HadoopCounters counters = new HadoopCountersImpl(); - - /** - * Empty constructor required by {@link Externalizable}. - */ - public HadoopJobMetadata() { - // No-op. - } - - /** - * Constructor. - * - * @param submitNodeId Submit node ID. - * @param jobId Job ID. - * @param jobInfo Job info. - */ - public HadoopJobMetadata(UUID submitNodeId, HadoopJobId jobId, HadoopJobInfo jobInfo) { - this.jobId = jobId; - this.jobInfo = jobInfo; - this.submitNodeId = submitNodeId; - } - - /** - * Copy constructor. - * - * @param src Metadata to copy. - */ - public HadoopJobMetadata(HadoopJobMetadata src) { - // Make sure to preserve alphabetic order. - counters = src.counters; - failCause = src.failCause; - jobId = src.jobId; - jobInfo = src.jobInfo; - mrPlan = src.mrPlan; - pendingSplits = src.pendingSplits; - pendingReducers = src.pendingReducers; - phase = src.phase; - reducersAddrs = src.reducersAddrs; - submitNodeId = src.submitNodeId; - ver = src.ver + 1; - } - - /** - * @return Submit node ID. - */ - public UUID submitNodeId() { - return submitNodeId; - } - - /** - * @param phase Job phase. - */ - public void phase(HadoopJobPhase phase) { - this.phase = phase; - } - - /** - * @return Job phase. - */ - public HadoopJobPhase phase() { - return phase; - } - - /** - * Gets reducers addresses for external execution. - * - * @return Reducers addresses. - */ - public Map<Integer, HadoopProcessDescriptor> reducersAddresses() { - return reducersAddrs; - } - - /** - * Sets reducers addresses for external execution. - * - * @param reducersAddrs Map of addresses. - */ - public void reducersAddresses(Map<Integer, HadoopProcessDescriptor> reducersAddrs) { - this.reducersAddrs = reducersAddrs; - } - - /** - * Sets collection of pending splits. - * - * @param pendingSplits Collection of pending splits. - */ - public void pendingSplits(Map<HadoopInputSplit, Integer> pendingSplits) { - this.pendingSplits = pendingSplits; - } - - /** - * Gets collection of pending splits. - * - * @return Collection of pending splits. - */ - public Map<HadoopInputSplit, Integer> pendingSplits() { - return pendingSplits; - } - - /** - * Sets collection of pending reducers. - * - * @param pendingReducers Collection of pending reducers. - */ - public void pendingReducers(Collection<Integer> pendingReducers) { - this.pendingReducers = pendingReducers; - } - - /** - * Gets collection of pending reducers. - * - * @return Collection of pending reducers. - */ - public Collection<Integer> pendingReducers() { - return pendingReducers; - } - - /** - * @return Job ID. - */ - public HadoopJobId jobId() { - return jobId; - } - - /** - * @param mrPlan Map-reduce plan. - */ - public void mapReducePlan(HadoopMapReducePlan mrPlan) { - assert this.mrPlan == null : "Map-reduce plan can only be initialized once."; - - this.mrPlan = mrPlan; - } - - /** - * @return Map-reduce plan. - */ - public HadoopMapReducePlan mapReducePlan() { - return mrPlan; - } - - /** - * @return Job info. - */ - public HadoopJobInfo jobInfo() { - return jobInfo; - } - - /** - * Returns job counters. - * - * @return Collection of counters. - */ - public HadoopCounters counters() { - return counters; - } - - /** - * Sets counters. - * - * @param counters Collection of counters. - */ - public void counters(HadoopCounters counters) { - this.counters = counters; - } - - /** - * @param failCause Fail cause. - */ - public void failCause(Throwable failCause) { - assert failCause != null; - - if (this.failCause == null) // Keep the first error. - this.failCause = failCause; - } - - /** - * @return Fail cause. - */ - public Throwable failCause() { - return failCause; - } - - /** - * @return Version. - */ - public long version() { - return ver; - } - - /** - * @param split Split. - * @return Task number. - */ - public int taskNumber(HadoopInputSplit split) { - return pendingSplits.get(split); - } - - /** {@inheritDoc} */ - @Override public void writeExternal(ObjectOutput out) throws IOException { - U.writeUuid(out, submitNodeId); - out.writeObject(jobId); - out.writeObject(jobInfo); - out.writeObject(mrPlan); - out.writeObject(pendingSplits); - out.writeObject(pendingReducers); - out.writeObject(phase); - out.writeObject(failCause); - out.writeLong(ver); - out.writeObject(reducersAddrs); - out.writeObject(counters); - } - - /** {@inheritDoc} */ - @SuppressWarnings("unchecked") - @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { - submitNodeId = U.readUuid(in); - jobId = (HadoopJobId)in.readObject(); - jobInfo = (HadoopJobInfo)in.readObject(); - mrPlan = (HadoopMapReducePlan)in.readObject(); - pendingSplits = (Map<HadoopInputSplit,Integer>)in.readObject(); - pendingReducers = (Collection<Integer>)in.readObject(); - phase = (HadoopJobPhase)in.readObject(); - failCause = (Throwable)in.readObject(); - ver = in.readLong(); - reducersAddrs = (Map<Integer, HadoopProcessDescriptor>)in.readObject(); - counters = (HadoopCounters)in.readObject(); - } - - /** {@inheritDoc} */ - public String toString() { - return S.toString(HadoopJobMetadata.class, this, "pendingMaps", pendingSplits.size(), - "pendingReduces", pendingReducers.size(), "failCause", failCause == null ? null : - failCause.getClass().getName()); - } -} \ No newline at end of file