[MAPREDUCE-6480] archive-logs tool may miss applications

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Robert Kanter
• Reporter: Robert Kanter
• Created: 17/Sep/15 00:11
• Updated: 30/Aug/16 01:16
• Resolved: 25/Sep/15 22:03

Description

MAPREDUCE-6415 added a tool to archive aggregated logs into HAR files. It seeds the initial list of applications to process based on apps which have finished aggregated, according to the RM. However, the RM doesn't remember completed applications forever (e.g. failover), so it's possible for the tool to miss applications if they're no longer in the RM.

Instead, we should do the following:

1. Seed the initial list of apps based on the aggregated log directories
2. Make the RM not consider applications "complete" until their log aggregation has reached a terminal state (i.e. DISABLED, SUCCEEDED, FAILED, TIME_OUT).

#2 will allow #1 to assume that any apps not found in the RM are done aggregating. #1 on it's own should cover most cases though

Issue Links

• is related to: MAPREDUCE-6415 Create a tool to combine aggregated logs into HAR files