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| Interface Summary | |
|---|---|
| WeightAdjuster | A pluggable object for altering the weights of apps in the fair scheduler,
which is used for example by NewAppWeightBooster to give higher
weight to new jobs so that short jobs finish faster. |
| Class Summary | |
|---|---|
| AppSchedulable | |
| FairScheduler | A scheduler that schedules resources between a set of queues. |
| FairSchedulerConfiguration | |
| FifoAppComparator | Order AppSchedulable objects by priority and then by submit time, as
in the default scheduler in Hadoop. |
| FSLeafQueue | |
| FSParentQueue | |
| FSQueue | |
| FSQueueMetrics | |
| FSSchedulerApp | |
| FSSchedulerNode | |
| NewAppWeightBooster | A WeightAdjuster implementation that gives a weight boost to new jobs
for a certain amount of time -- by default, a 3x weight boost for 60 seconds. |
| QueueManager | Maintains a list of queues as well as scheduling parameters for each queue, such as guaranteed share allocations, from the fair scheduler config file. |
| Schedulable | A Schedulable represents an entity that can launch tasks, such as a job or a queue. |
| SchedulingPolicy | |
| Exception Summary | |
|---|---|
| AllocationConfigurationException | Thrown when the allocation file for QueueManager is malformed. |
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