[jira] [Created] (FLINK-37412) Add slot allocation strategy to for selecting TMs first that have already slots assigned

["Matthias Pohl (Jira)" <ji...@apache.org>]

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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