@Override
public String getFromHistory(String jobId) throws IOException {
Configuration conf = getConf();
String file = getHistoryFile(conf, jobId);
if (file == null) return null;
JobHistory.JobInfo jobInfo = new JobHistory.JobInfo(jobId);
DefaultJobHistoryParser.parseJobTasks(file, jobInfo, new Path(file).getFileSystem(conf));
LOG.info("History file: {}", file);
LOG.debug("Number of tasks in the history file: {}", jobInfo.getAllTasks().size());
for (JobHistory.Task task : jobInfo.getAllTasks().values()) {
if (task.get(JobHistory.Keys.TASK_TYPE).equals(JobHistory.Values.MAP.name())
&& task.get(JobHistory.Keys.TASK_STATUS).equals(JobHistory.Values.SUCCESS.name())) {
for (JobHistory.TaskAttempt attempt : task.getTaskAttempts().values()) {
if (attempt.get(JobHistory.Keys.TASK_STATUS).equals(JobHistory.Values.SUCCESS.name())) {
return JobHistory.getTaskLogsUrl(attempt);
}
}
}
}
LOG.warn("Unable to find successful map task attempt");
return null;
}
