mapred.capacity-scheduler.default-supports-priority false If true, priorities of jobs will be taken into account in scheduling decisions by default in a job queue. mapred.capacity-scheduler.default-minimum-user-limit-percent 100 The percentage of the resources limited to a particular user for the job queue at any given point of time by default. mapred.capacity-scheduler.default-maximum-initialized-jobs-per-user 2 The maximum number of jobs to be pre-initialized for a user of the job queue. mapred.capacity-scheduler.init-poll-interval 5000 The amount of time in miliseconds which is used to poll the job queues for jobs to initialize. mapred.capacity-scheduler.init-worker-threads 5 Number of worker threads which would be used by Initialization poller to initialize jobs in a set of queue. If number mentioned in property is equal to number of job queues then a single thread would initialize jobs in a queue. If lesser then a thread would get a set of queues assigned. If the number is greater then number of threads would be equal to number of job queues.