[ https://issues.apache.org/jira/browse/YARN-3319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Craig Welch updated YARN-3319: ------------------------------ Attachment: YARN-3319.47.patch > Implement a FairOrderingPolicy > ------------------------------ > > Key: YARN-3319 > URL: https://issues.apache.org/jira/browse/YARN-3319 > Project: Hadoop YARN > Issue Type: Sub-task > Components: scheduler > Reporter: Craig Welch > Assignee: Craig Welch > Attachments: YARN-3319.13.patch, YARN-3319.14.patch, > YARN-3319.17.patch, YARN-3319.35.patch, YARN-3319.39.patch, > YARN-3319.45.patch, YARN-3319.47.patch > > > Implement a FairOrderingPolicy which prefers to allocate to > SchedulerProcesses with least current usage, very similar to the > FairScheduler's FairSharePolicy. > The Policy will offer allocations to applications in a queue in order of > least resources used, and preempt applications in reverse order (from most > resources used). This will include conditional support for sizeBasedWeight > style adjustment > Optionally, based on a conditional configuration to enable sizeBasedWeight > (default false), an adjustment to boost larger applications (to offset the > natural preference for smaller applications) will adjust the resource usage > value based on demand, dividing it by the below value: > Math.log1p(app memory demand) / Math.log(2); > In cases where the above is indeterminate (two applications are equal after > this comparison), behavior falls back to comparison based on the application > id, which is generally lexically FIFO for that comparison -- This message was sent by Atlassian JIRA (v6.3.4#6332)