Arun Suresh created YARN-4212:
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Summary: FairScheduler: Parent queues with 'Fair' policy should
compute shares of all resources for its children during a recompute
Key: YARN-4212
URL: https://issues.apache.org/jira/browse/YARN-4212
Project: Hadoop YARN
Issue Type: Bug
Reporter: Arun Suresh
Assignee: Arun Suresh
The Fair Scheduler, while performing a {{recomputeShares()}} during an
{{update()}} call, uses the parent queues policy to distribute shares to its
children.
If the parent queues policy is 'fair', it only computes weight for memory and
sets the vcores fair share of its children to 0.
Assuming a situation where we have 1 parent queue with policy 'fair' and
multiple leaf queues with policy 'drf', Any app submitted to the child queues
with vcore requirement > 1 will always be above fairshare, since during the
recomputeShare process, the child queues were all assigned 0 for fairshare
vcores.
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