[YARN-5565] Capacity Scheduler not assigning value correctly.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 2.7.2
• Component/s: capacity scheduler, yarn
• Labels: capacity-scheduler scheduler yarn

Environment

hadoop 2.7.2

• Assignee: Zian Chen
• Reporter: gurmukh singh
• Created: 25/Aug/16 23:57
• Updated: 17/Jul/18 10:28
• Resolved: 17/Jul/18 05:27

Description

Hi

I was testing and found out that value assigned in the scheduler configuration is not consistent with what ResourceManager is assigning.

If i set the configuration as below and understand that it is java float, but the rounding is not correct.

capacity-sheduler.xml
<property>
<name>yarn.scheduler.capacity.q1.capacity</name>
<value>7.142857142857143</value>
</property>

In Java: System.err.println((7.142857142857143f)) ===> 7.142587

But, instead Resource Manager is assigning is 7.1428566

Tested this on hadoop 2.7.2