Details
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New Feature
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Status: Open
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Minor
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Resolution: Unresolved
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Impala 2.3.0
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None
Description
When the YARN parameter yarn.scheduler.fair.allow-undeclared-pools is set to false Impala still creates resource pools dynamically. This leads to unexpected behaviour when configuring admission controls.
Impala uses the resource pool root.<username> if no pool is specified. Queries that do not
specify a pool will trigger creation of a new one, which is likely not what the user intended. This behaviour occurs even when yarn.scheduler.fair.user-as-default-queue is set to false.