[MAPREDUCE-6242] Progress report log is incredibly excessive in application master

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: applicationmaster
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Varun Saxena
• Reporter: Jian Fang
• Created: 03/Feb/15 19:05
• Updated: 30/Aug/16 01:19
• Resolved: 23/Mar/15 17:24

Description

We saw incredibly excessive logs in application master for a long running one with many task attempts. The log write rate is around 1MB/sec in some cases.

Most of the log entries were from the progress report such as the following ones.

2015-02-03 17:46:14,321 INFO [IPC Server handler 56 on 37661] org.apache.hadoop.mapred.TaskAttemptListenerImpl: Progress of TaskAttempt attempt_1422985365246_0001_m_000000_0 is : 0.15605757
2015-02-03 17:46:17,581 INFO [IPC Server handler 2 on 37661] org.apache.hadoop.mapred.TaskAttemptListenerImpl: Progress of TaskAttempt attempt_1422985365246_0001_m_000000_0 is : 0.4108217
2015-02-03 17:46:20,426 INFO [IPC Server handler 0 on 37661] org.apache.hadoop.mapred.TaskAttemptListenerImpl: Progress of TaskAttempt attempt_1422985365246_0001_m_000002_0 is : 0.06634143
2015-02-03 17:46:20,807 INFO [IPC Server handler 4 on 37661] org.apache.hadoop.mapred.TaskAttemptListenerImpl: Progress of TaskAttempt attempt_1422985365246_0001_m_000000_0 is : 0.55556506
2015-02-03 17:46:21,013 INFO [IPC Server handler 6 on 37661] org.apache.hadoop.mapred.TaskAttemptListenerImpl: Progress of TaskAttempt attempt_1422985365246_0001_m_000001_0 is : 0.21723115

Looks like the report interval is controlled by a hard-coded variable PROGRESS_INTERVAL as 3 seconds in class org.apache.hadoop.mapred.Task. We should allow users to set the appropriate progress interval for their applications.

Issue Links

• incorporates: MAPREDUCE-6740 Enforce mapreduce.task.timeout to be at least mapreduce.task.progress-report.interval
• relates to: MAPREDUCE-5124 AM lacks flow control for task events