Abhishek Rawat created IMPALA-15392:
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Summary: Cap default pool's max memory limit
Key: IMPALA-15392
URL: https://issues.apache.org/jira/browse/IMPALA-15392
Project: IMPALA
Issue Type: Task
Reporter: Abhishek Rawat
The default resource pool currently has an unbounded cluster-wide max memory
limit, which causes concurrent workloads to fail with Out-Of-Memory (OOM)
errors and creates a negative first impression of Impala's concurrency
capabilities. To resolve this, the default request pool should enforce a
maximum memory limit dynamically derived from the total backend memory
available for query execution. This provides a stable, out-of-the-box admission
control experience that safely handles concurrent queries, while still allowing
advanced users to manually tune the admission controller settings for their
specific workloads.
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