[YARN-4310] FairScheduler: Log skipping reservation messages at DEBUG level

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: fairscheduler
• Assignee: Arun Suresh
• Reporter: Arun Suresh
• Created: 28/Oct/15 20:20
• Updated: 30/Aug/16 01:14
• Resolved: 29/Oct/15 20:44

Description

YARN-4270 introduced an additional log message that is currently at INFO level :

2015-10-28 11:13:21,692 INFO
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttemt:
Reservation Exceeds Allowed number of nodes:
app_id=application_1446045371769_0001 existingReservations=1
totalAvailableNodes=4 reservableNodesRatio=0.05
numAllowedReservations=1

It has been observed that the log message can totally swap the RM log file. This needs to be reduced to DEBUG level.