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Explain About The Different Schedulers Available In Hadoop.? |
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Answer» FIFO SCHEDULER – This scheduler does not consider the HETEROGENEITY in the system but orders the jobs based on their arrival times in a queue. COSHH- This scheduler considers the WORKLOAD, cluster and the user heterogeneity for scheduling decisions. Fair Sharing-This HADOOP scheduler defines a pool for each user. The pool contains a number of MAP and reduce slots on a resource. Each user can use their own pool to execute the jobs. FIFO Scheduler – This scheduler does not consider the heterogeneity in the system but orders the jobs based on their arrival times in a queue. COSHH- This scheduler considers the workload, cluster and the user heterogeneity for scheduling decisions. Fair Sharing-This Hadoop scheduler defines a pool for each user. The pool contains a number of map and reduce slots on a resource. Each user can use their own pool to execute the jobs. |
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