Hong Zhiguo created YARN-2323: --------------------------------- Summary: FairShareComparator creates too much Resource object Key: YARN-2323 URL: https://issues.apache.org/jira/browse/YARN-2323 Project: Hadoop YARN Issue Type: Improvement Components: fairscheduler Reporter: Hong Zhiguo Assignee: Hong Zhiguo Priority: Minor
Each call of {{FairShareComparator}} creates a new Resource object "one": {code} Resource one = Resources.createResource(1); {code} At the volume of 1000 nodes and 1000 apps, the comparator will be called more than 10 million times per second, thus creating more than 10 million object "one", which is unnecessary. Since the object "one" is read-only and is never referenced outside of comparator, we could make it static. -- This message was sent by Atlassian JIRA (v6.2#6252)