[jira] Commented: (HADOOP-4444) Scheduling Information for queues shows one map/reduce task less then actual running map/reduce tasks.

["Karam Singh (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12640514#action_12640514 ] 

Karam Singh commented on HADOOP-4444:
-------------------------------------

Submitted a job with map and reduce tasks = 212.
When all maps and reduces tasks of job starts running, JobTracker UI displayed following information about "Cluster Summary" and "Scheduling Information" -:

Maps=212, Reduces=212, Total Submissions=2, Nodes =106, Map Task Capacity=212 Reduce Task Capacity	=212, Avg. Tasks/Node=4.00

Scheduling Information shows -:
Queue Name=default 
Guaranteed Capacity Maps (%) :100.0
Guaranteed Capacity Reduces (%) :100.0
Current Capacity Maps : 212 
Current Capacity Reduces : 212 
User Limit : 25 
Reclaim Time limit : 300 
Number of Running Maps : 211 
Number of Running Reduces : 211 
Number of Waiting Maps : 1 
Number of Waiting Reduces : 1 
Priority Supported : YES


Job Details page displays -:
JobID: job_200810171104_0003 on gs301308
Kind =map, Num Tasks=212, Pending=0, Running=0, Complete=0, Killed=0, Failed/Killed Task Attempts=0/0
Kind=reduce	Num Task=212, Pending=0, Running=0, Complete=0, Killed=0, Failed/Killed Task Attempts=0/0.

This also shows that actually 212 MR tasks are running while queue info displays 211 MR tasks running and 1 in waiting.
Note -: if there are ore then one jobs running queue information display one task than then actual task running 

> Scheduling Information for queues shows one map/reduce task less then actual running map/reduce tasks.
> ------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-4444
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4444
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/capacity-sched
>         Environment: Hadoop r705159, Queue=default, GC=100% MapCapacity=ReduceCapacity=212
>            Reporter: Karam Singh
>
> Scheduling Information for queues shows one map/reduce task less then actual running map/reduce tasks.

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