Example usage for java.lang ReflectiveOperationException getLocalizedMessage

Introduction

In this page you can find the example usage for java.lang ReflectiveOperationException getLocalizedMessage.

Prototype

public String getLocalizedMessage() 

Source Link

Document

Creates a localized description of this throwable.

Usage

From source file:org.apache.kylin.job.common.MapReduceExecutable.java

@Override
protected ExecuteResult doWork(ExecutableContext context) throws ExecuteException {
    final String mapReduceJobClass = getMapReduceJobClass();
    String params = getMapReduceParams();
    Preconditions.checkNotNull(mapReduceJobClass);
    Preconditions.checkNotNull(params);//w ww . jav a 2 s .c  o  m
    try {
        Job job;
        final Map<String, String> extra = executableManager.getOutput(getId()).getExtra();
        if (extra.containsKey(ExecutableConstants.MR_JOB_ID)) {
            job = new Cluster(new Configuration())
                    .getJob(JobID.forName(extra.get(ExecutableConstants.MR_JOB_ID)));
            logger.info("mr_job_id:" + extra.get(ExecutableConstants.MR_JOB_ID + " resumed"));
        } else {
            final Constructor<? extends AbstractHadoopJob> constructor = ClassUtil
                    .forName(mapReduceJobClass, AbstractHadoopJob.class).getConstructor();
            final AbstractHadoopJob hadoopJob = constructor.newInstance();
            hadoopJob.setAsync(true); // so the ToolRunner.run() returns right away
            logger.info("parameters of the MapReduceExecutable:");
            logger.info(params);
            String[] args = params.trim().split("\\s+");
            try {
                //for async mr job, ToolRunner just return 0;
                ToolRunner.run(hadoopJob, args);
            } catch (Exception ex) {
                StringBuilder log = new StringBuilder();
                logger.error("error execute " + this.toString(), ex);
                StringWriter stringWriter = new StringWriter();
                ex.printStackTrace(new PrintWriter(stringWriter));
                log.append(stringWriter.toString()).append("\n");
                log.append("result code:").append(2);
                return new ExecuteResult(ExecuteResult.State.ERROR, log.toString());
            }
            job = hadoopJob.getJob();
        }
        final StringBuilder output = new StringBuilder();
        final HadoopCmdOutput hadoopCmdOutput = new HadoopCmdOutput(job, output);

        final String restStatusCheckUrl = getRestStatusCheckUrl(job, context.getConfig());
        if (restStatusCheckUrl == null) {
            logger.error("restStatusCheckUrl is null");
            return new ExecuteResult(ExecuteResult.State.ERROR, "restStatusCheckUrl is null");
        }
        String mrJobId = hadoopCmdOutput.getMrJobId();
        HadoopStatusChecker statusChecker = new HadoopStatusChecker(restStatusCheckUrl, mrJobId, output);
        JobStepStatusEnum status = JobStepStatusEnum.NEW;
        while (!isDiscarded()) {
            JobStepStatusEnum newStatus = statusChecker.checkStatus();
            if (status == JobStepStatusEnum.WAITING && (newStatus == JobStepStatusEnum.FINISHED
                    || newStatus == JobStepStatusEnum.ERROR || newStatus == JobStepStatusEnum.RUNNING)) {
                final long waitTime = System.currentTimeMillis() - getStartTime();
                setMapReduceWaitTime(waitTime);
            }
            status = newStatus;
            executableManager.addJobInfo(getId(), hadoopCmdOutput.getInfo());
            if (status.isComplete()) {
                hadoopCmdOutput.updateJobCounter();
                final Map<String, String> info = hadoopCmdOutput.getInfo();
                info.put(ExecutableConstants.SOURCE_RECORDS_COUNT, hadoopCmdOutput.getMapInputRecords());
                info.put(ExecutableConstants.SOURCE_RECORDS_SIZE, hadoopCmdOutput.getHdfsBytesRead());
                info.put(ExecutableConstants.HDFS_BYTES_WRITTEN, hadoopCmdOutput.getHdfsBytesWritten());
                executableManager.addJobInfo(getId(), info);

                if (status == JobStepStatusEnum.FINISHED) {
                    return new ExecuteResult(ExecuteResult.State.SUCCEED, output.toString());
                } else {
                    return new ExecuteResult(ExecuteResult.State.FAILED, output.toString());
                }
            }
            Thread.sleep(context.getConfig().getYarnStatusCheckIntervalSeconds() * 1000);
        }
        //TODO kill discarded mr job using "hadoop job -kill " + mrJobId

        return new ExecuteResult(ExecuteResult.State.DISCARDED, output.toString());

    } catch (ReflectiveOperationException e) {
        logger.error("error getMapReduceJobClass, class name:" + getParam(KEY_MR_JOB), e);
        return new ExecuteResult(ExecuteResult.State.ERROR, e.getLocalizedMessage());
    } catch (Exception e) {
        logger.error("error execute " + this.toString(), e);
        return new ExecuteResult(ExecuteResult.State.ERROR, e.getLocalizedMessage());
    }
}

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