Matthias Pohl created FLINK-37412:
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Summary: Add slot allocation strategy to for selecting TMs first
that have already slots assigned
Key: FLINK-37412
URL: https://issues.apache.org/jira/browse/FLINK-37412
Project: Flink
Issue Type: Improvement
Components: Runtime / Coordination
Reporter: Matthias Pohl
Right now, the {{DefaultResourceAllocationStrategy}} has two different
strategies for selecting the TM that should try to allocate a slot for a given
Job:
* {{LeastUtilizationResourceMatchingStrategy}}: Selects the TM based on it's
utilization. TMs that have less resources allocated get precedence over more
utilized TMs. This works as a fan-out strategy to spread the load onto as many
TMs as possible.
* {{AnyMatchingResourceMatchingStrategy}}: Kind of randomly selects the TM
order to iterate over for allocating the resource requirements. This works kind
of as a fallback/default.
This Jira issue is about a third option: Trying to fully utilize TMs before
assigning slots to new "untouched" TMs. This would help utilizing the available
TMs.
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