[jira] [Created] (FLINK-7970) SlotPool support batch allocating slots

[Shang Yuanchun (Jira)]

shuai.xu created FLINK-7970:
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             Summary: SlotPool support batch allocating slots
                 Key: FLINK-7970
                 URL: https://issues.apache.org/jira/browse/FLINK-7970
             Project: Flink
          Issue Type: Improvement
          Components: JobManager
            Reporter: shuai.xu
            Assignee: shuai.xu


Now all slot allocation is one by one from execution to slot pool. If batch allocate a number of slots to slot pool, then slot pool can assign its cached slots according to the global slot requests of all executions, so it can make an optimal matching between slot and execution, this is especially usefully for failover. For example, it can assign a slot to the execution whose state is just on the machine when failover.




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