[
https://issues.apache.org/jira/browse/HADOOP-4445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12652265#action_12652265
]
Sreekanth Ramakrishnan commented on HADOOP-4445:
------------------------------------------------
Checked with 80 jobs in a queue, the maximum time taken for getting running and
pending tasks was 2 milliseconds(inclusive of scheduler.getJobs()) by
refreshing the job tracker and queue details page every 15 seconds.
So if we have 10 queues, we would have a maximum delay of 20 milliseconds when
user requests for information. This can be further reduced if we get in
[HADOOP-4576|https://issues.apache.org/jira/browse/HADOOP-4576] as then we
would count tasks in running job queue and then subtract the running job number
from total job number to get waiting job count.
> Wrong number of running map/reduce tasks are displayed in queue information.
> ----------------------------------------------------------------------------
>
> Key: HADOOP-4445
> URL: https://issues.apache.org/jira/browse/HADOOP-4445
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/capacity-sched
> Affects Versions: 0.19.0
> Environment: Hadoop r705159, Queue=default, GC=100%
> MapCapacity=ReduceCapacity=212
> Reporter: Karam Singh
> Assignee: Sreekanth Ramakrishnan
>
> Wrong number of running map/reduce tasks are displayed in queue information.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
