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https://issues.apache.org/jira/browse/YARN-7088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16150440#comment-16150440
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Sunil G commented on YARN-7088:
-------------------------------
IIUC, there are few fields we are trying to define based on trunk as well as
this patch.
||Types||Definition||Calculation||
|*submitTime*|Submission time of app from ClientRMService#submitApplication|N/A|
|*startTime*|When RMApp is created in RMAppManager during submission of an
app|N/A|
|launchTime|When RM has allocated master container for AM and RMAppAttempt
reaches LAUNCHED state|N/A|
|*finishTime*|When AM un-registered or RMApp's end time in case of failure|N/A|
|*elapsedTime*|Time difference between app start and
finish|finishTime-startTime|
|schedulingWaitTime/pendingTime|Time difference between app launch and start
time to get scheduling wait time|launchTime-startTime|
|totalRunTime|Time difference between app launch and finish so that we get
whole run time|finishTime-launchTime|
We have some of this fields which are marked bold and other proposed in this
patch except *totalRunTime*. I think addition of *launchTime* makes sense.
*pendingTime* was lil confusing as it was not clear what it was pending for. I
was also thinking *schedulingWaitTime* is more clear than pendingTime. If
others feels pendingTime fine, i think i am also good, lets get this in :). I
am looping [~rohithsharma] who worked in App Timeout feature if he has some
more thoughts.
Please correct me and update if any definitions are not correct. By the way I
have another major query though, during recovery how could we save
*launchTime*. We cannot change this value after RM restart as APP may be
already running. Recovery might need a relook with respect to launchTime.
> Fix application start time and add submit time to UIs
> -----------------------------------------------------
>
> Key: YARN-7088
> URL: https://issues.apache.org/jira/browse/YARN-7088
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 3.0.0-alpha4
> Reporter: Abdullah Yousufi
> Assignee: Abdullah Yousufi
> Attachments: YARN-7088.001.patch, YARN-7088.002.patch,
> YARN-7088.003.patch, YARN-7088.004.patch, YARN-7088.005.patch,
> YARN-7088.006.patch, YARN-7088.007.patch
>
>
> Currently, the start time in the old and new UI actually shows the app
> submission time. There should actually be two different fields; one for the
> app's submission and one for its start, as well as the elapsed pending time
> between the two.
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