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/**
* 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.mapred;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableFactories;
import org.apache.hadoop.io.WritableFactory;
import org.apache.hadoop.io.WritableUtils;
/**************************************************
* Describes the current status of a job. This is
* not intended to be a comprehensive piece of data.
* For that, look at JobProfile.
**************************************************/
public class JobStatus implements Writable, Cloneable {
static { // register a ctor
WritableFactories.setFactory
(JobStatus.class,
new WritableFactory() {
public Writable newInstance() { return new JobStatus(); }
});
}
public static final int RUNNING = 1;
public static final int SUCCEEDED = 2;
public static final int FAILED = 3;
public static final int PREP = 4;
public static final int KILLED = 5;
private static final String UNKNOWN = "UNKNOWN";
private static final String[] runStates =
{UNKNOWN, "RUNNING", "SUCCEEDED", "FAILED", "PREP", "KILLED"};
/**
* Helper method to get human-readable state of the job.
* @param state job state
* @return human-readable state of the job
*/
public static String getJobRunState(int state) {
if (state < 1 || state >= runStates.length) {
return UNKNOWN;
}
return runStates[state];
}
private JobID jobid;
private float mapProgress;
private float reduceProgress;
private float cleanupProgress;
private float setupProgress;
private int runState;
private long startTime;
private String user;
private JobPriority priority;
private String schedulingInfo="NA";
/**
*/
public JobStatus() {
}
/**
* Create a job status object for a given jobid.
* @param jobid The jobid of the job
* @param mapProgress The progress made on the maps
* @param reduceProgress The progress made on the reduces
* @param cleanupProgress The progress made on cleanup
* @param runState The current state of the job
*/
public JobStatus(JobID jobid, float mapProgress, float reduceProgress,
float cleanupProgress, int runState) {
this(jobid, mapProgress, reduceProgress, cleanupProgress, runState,
JobPriority.NORMAL);
}
/**
* Create a job status object for a given jobid.
* @param jobid The jobid of the job
* @param mapProgress The progress made on the maps
* @param reduceProgress The progress made on the reduces
* @param runState The current state of the job
*/
public JobStatus(JobID jobid, float mapProgress, float reduceProgress,
int runState) {
this(jobid, mapProgress, reduceProgress, 0.0f, runState);
}
/**
* Create a job status object for a given jobid.
* @param jobid The jobid of the job
* @param mapProgress The progress made on the maps
* @param reduceProgress The progress made on the reduces
* @param runState The current state of the job
* @param jp Priority of the job.
*/
public JobStatus(JobID jobid, float mapProgress, float reduceProgress,
float cleanupProgress, int runState, JobPriority jp) {
this(jobid, 0.0f, mapProgress, reduceProgress,
cleanupProgress, runState, jp);
}
/**
* Create a job status object for a given jobid.
* @param jobid The jobid of the job
* @param setupProgress The progress made on the setup
* @param mapProgress The progress made on the maps
* @param reduceProgress The progress made on the reduces
* @param cleanupProgress The progress made on the cleanup
* @param runState The current state of the job
* @param jp Priority of the job.
*/
public JobStatus(JobID jobid, float setupProgress, float mapProgress,
float reduceProgress, float cleanupProgress,
int runState, JobPriority jp) {
this.jobid = jobid;
this.setupProgress = setupProgress;
this.mapProgress = mapProgress;
this.reduceProgress = reduceProgress;
this.cleanupProgress = cleanupProgress;
this.runState = runState;
this.user = "nobody";
if (jp == null) {
throw new IllegalArgumentException("Job Priority cannot be null.");
}
priority = jp;
}
/**
* Create a job status object for a given jobid.
* @param jobid The jobid of the job
* @param setupProgress The progress made on the setup
* @param mapProgress The progress made on the maps
* @param reduceProgress The progress made on the reduces
* @param cleanupProgress The progress made on the cleanup
* @param runState The current state of the job
* @param jp Priority of the job.
* @param user Userid of the person who submitted the job.
*/
public JobStatus(JobID jobid, float setupProgress, float mapProgress,
float reduceProgress, float cleanupProgress,
int runState, JobPriority jp, String user) {
this.jobid = jobid;
this.setupProgress = setupProgress;
this.mapProgress = mapProgress;
this.reduceProgress = reduceProgress;
this.cleanupProgress = cleanupProgress;
this.runState = runState;
this.user = user;
if (jp == null) {
throw new IllegalArgumentException("Job Priority cannot be null.");
}
priority = jp;
}
/**
* @deprecated use getJobID instead
*/
@Deprecated
public String getJobId() { return jobid.toString(); }
/**
* @return The jobid of the Job
*/
public JobID getJobID() { return jobid; }
/**
* @return Percentage of progress in maps
*/
public synchronized float mapProgress() { return mapProgress; }
/**
* Sets the map progress of this job
* @param p The value of map progress to set to
*/
synchronized void setMapProgress(float p) {
this.mapProgress = (float) Math.min(1.0, Math.max(0.0, p));
}
/**
* @return Percentage of progress in cleanup
*/
public synchronized float cleanupProgress() { return cleanupProgress; }
/**
* Sets the cleanup progress of this job
* @param p The value of cleanup progress to set to
*/
synchronized void setCleanupProgress(float p) {
this.cleanupProgress = (float) Math.min(1.0, Math.max(0.0, p));
}
/**
* @return Percentage of progress in setup
*/
public synchronized float setupProgress() { return setupProgress; }
/**
* Sets the setup progress of this job
* @param p The value of setup progress to set to
*/
synchronized void setSetupProgress(float p) {
this.setupProgress = (float) Math.min(1.0, Math.max(0.0, p));
}
/**
* @return Percentage of progress in reduce
*/
public synchronized float reduceProgress() { return reduceProgress; }
/**
* Sets the reduce progress of this Job
* @param p The value of reduce progress to set to
*/
synchronized void setReduceProgress(float p) {
this.reduceProgress = (float) Math.min(1.0, Math.max(0.0, p));
}
/**
* @return running state of the job
*/
public synchronized int getRunState() { return runState; }
/**
* Change the current run state of the job.
*/
public synchronized void setRunState(int state) {
this.runState = state;
}
/**
* Set the start time of the job
* @param startTime The startTime of the job
*/
synchronized void setStartTime(long startTime) { this.startTime = startTime;}
/**
* @return start time of the job
*/
synchronized public long getStartTime() { return startTime;}
@Override
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException cnse) {
// Shouldn't happen since we do implement Clonable
throw new InternalError(cnse.toString());
}
}
/**
* @param user The username of the job
*/
synchronized void setUsername(String userName) { this.user = userName;}
/**
* @return the username of the job
*/
public synchronized String getUsername() { return this.user;}
/**
* Gets the Scheduling information associated to a particular Job.
* @return the scheduling information of the job
*/
public synchronized String getSchedulingInfo() {
return schedulingInfo;
}
/**
* Used to set the scheduling information associated to a particular Job.
*
* @param schedulingInfo Scheduling information of the job
*/
public synchronized void setSchedulingInfo(String schedulingInfo) {
this.schedulingInfo = schedulingInfo;
}
/**
* Return the priority of the job
* @return job priority
*/
public synchronized JobPriority getJobPriority() { return priority; }
/**
* Set the priority of the job, defaulting to NORMAL.
* @param jp new job priority
*/
public synchronized void setJobPriority(JobPriority jp) {
if (jp == null) {
throw new IllegalArgumentException("Job priority cannot be null.");
}
priority = jp;
}
/**
* Returns true if the status is for a completed job.
*/
public synchronized boolean isJobComplete() {
return (runState == JobStatus.SUCCEEDED || runState == JobStatus.FAILED
|| runState == JobStatus.KILLED);
}
///////////////////////////////////////
// Writable
///////////////////////////////////////
public synchronized void write(DataOutput out) throws IOException {
jobid.write(out);
out.writeFloat(setupProgress);
out.writeFloat(mapProgress);
out.writeFloat(reduceProgress);
out.writeFloat(cleanupProgress);
out.writeInt(runState);
out.writeLong(startTime);
Text.writeString(out, user);
WritableUtils.writeEnum(out, priority);
Text.writeString(out, schedulingInfo);
}
public synchronized void readFields(DataInput in) throws IOException {
this.jobid = JobID.read(in);
this.setupProgress = in.readFloat();
this.mapProgress = in.readFloat();
this.reduceProgress = in.readFloat();
this.cleanupProgress = in.readFloat();
this.runState = in.readInt();
this.startTime = in.readLong();
this.user = Text.readString(in);
this.priority = WritableUtils.readEnum(in, JobPriority.class);
this.schedulingInfo = Text.readString(in);
}
// A utility to convert new job runstates to the old ones.
static int getOldNewJobRunState(
org.apache.hadoop.mapreduce.JobStatus.State state) {
return state.getValue();
}
}
