[YARN-9407] getComputedResourceLimitForActiveUsers debug line does not show username

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.7.3
• Component/s: capacityscheduler
• Assignee: Unassigned
• Reporter: steven W
• Created: 25/Mar/19 15:08
• Updated: 25/Mar/19 15:08

Description

Debug logging of the capacityscheduler doesn't log the username when printing the calculated user limit. In general you can deduct what user it is, but it would be great if the username is added to the logline.

Example logline:

2019-03-25 11:05:08,956 DEBUG capacity.UsersManager (UsersManager.java:getComputedResourceLimitForActiveUsers(525)) - userLimit is fetched. userLimit=<memory:3584, vCores:2>, userSpecificUserLimit=<memory:3584, vCores:2>, schedulingMode=RESPECT_PARTITION_EXCLUSIVITY, partition=

Change code block in function getComputedResourceLimitForActiveUsers in file java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/UsersManager.java

The actual block printing the line:

LOG.debug("userLimit is fetched. userLimit={}, userSpecificUserLimit={},"
 + " schedulingMode={}, partition={}", userLimitResource,
 userSpecificUserLimit, schedulingMode, nodePartition);

should be changed to contain the username

It's a minor change and would help debugging