[
https://issues.apache.org/jira/browse/APEXCORE-777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Vlad Rozov updated APEXCORE-777:
--------------------------------
Summary: Application Master may not shutdown due to incorrect
numRequestedContainers counting (was: Application Master may not shutdown due
to incorrect numRequesteContainers counting)
> Application Master may not shutdown due to incorrect numRequestedContainers
> counting
> ------------------------------------------------------------------------------------
>
> Key: APEXCORE-777
> URL: https://issues.apache.org/jira/browse/APEXCORE-777
> Project: Apache Apex Core
> Issue Type: Bug
> Reporter: Vlad Rozov
> Priority: Minor
>
> Consider a scenario where App master requests a container from Yarn
> (numRequestedContainers = 1). There is not enough resources and the request
> timeouts. My understanding is that App master will re-request it again but
> the number of requested containers will not change (one newly requested, one
> removed). Let's assume that App master, by the time Yarn responds back
> decides that it does not need any. If Yarn responds with one allocated
> containers, numRequestedContainers will go to 0 (correct), but Yarn may
> respond back with 2 allocated containers if by the time App Master sends the
> second request it already allocated a container requested in the original
> request (the one that timeouted) as Yarn does not guarantee that removed
> request is fullfilled (see Yarn doc). Will not in this case
> numRequestedContainers be -1 due to the bulk decrement?
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
