[YARN-2736] Job.getHistoryUrl returns empty string

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.5.1
• Component/s: api
• Assignee: Unassigned
• Reporter: Kannan Rajah
• Created: 23/Oct/14 19:10
• Updated: 24/Feb/16 01:43
• Resolved: 24/Feb/16 01:43

Description

getHistoryUrl() method in Job class is returning empty string. Example code:

job = Job.getInstance(conf);
job.setJobName("MapReduceApp");
job.setJarByClass(MapReduceApp.class);

job.setMapperClass(Mapper1.class);
job.setCombinerClass(Reducer1.class);
job.setReducerClass(Reducer1.class);

job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(IntWritable.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(IntWritable.class);

job.setNumReduceTasks(1);

job.setOutputFormatClass(TextOutputFormat.class);
job.setInputFormatClass(TextInputFormat.class);

FileInputFormat.addInputPath(job, inputPath);
FileOutputFormat.setOutputPath(job, outputPath);

job.waitForCompletion(true);
job.getHistoryUrl();

It is always returning empty string. Looks like getHistoryUrl() support was removed in YARN-321.

getTrackingURL() returns correct url though.

Issue Links

• is superceded by: MAPREDUCE-6640 mapred job -history command should be able to take Job ID