/**
* Write random bytes at the path provided.
*
* @see org.apache.hadoop.mapred.gridmix.GenerateData
*/
protected void writeInputData(long genbytes, Path ioPath)
throws IOException, InterruptedException {
final Configuration conf = getConf();
final GridmixJob genData = new GenerateData(conf, ioPath, genbytes);
submitter.add(genData);
LOG.info("Generating " + StringUtils.humanReadableInt(genbytes) + " of test data...");
// TODO add listeners, use for job dependencies
TimeUnit.SECONDS.sleep(10);
try {
genData.getJob().waitForCompletion(false);
} catch (ClassNotFoundException e) {
throw new IOException("Internal error", e);
}
if (!genData.getJob().isSuccessful()) {
throw new IOException("Data generation failed!");
}
FsShell shell = new FsShell(conf);
try {
LOG.info("Changing the permissions for inputPath " + ioPath.toString());
shell.run(new String[] {"-chmod", "-R", "777", ioPath.toString()});
} catch (Exception e) {
LOG.error("Couldnt change the file permissions ", e);
throw new IOException(e);
}
LOG.info("Done.");
}
// Launch Input/DistCache Data Generation job and wait for completion
void launchGridmixJob(GridmixJob job) throws IOException, InterruptedException {
submitter.add(job);
// TODO add listeners, use for job dependencies
try {
while (!job.isSubmitted()) {
try {
Thread.sleep(100); // sleep
} catch (InterruptedException ie) {
}
}
// wait for completion
job.getJob().waitForCompletion(false);
} catch (ClassNotFoundException e) {
throw new IOException("Internal error", e);
}
if (!job.getJob().isSuccessful()) {
throw new IOException(job.getJob().getJobName() + " job failed!");
}
}