[jira] [Created] (FLINK-15236) Add a safety net for concurrent checkpoints on TM side

[Shang Yuanchun (Jira)]

Congxian Qiu(klion26) created FLINK-15236:
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             Summary: Add a safety net for concurrent checkpoints on TM side
                 Key: FLINK-15236
                 URL: https://issues.apache.org/jira/browse/FLINK-15236
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Checkpointing
            Reporter: Congxian Qiu(klion26)


As discussed in FLINK-13808,  we can add additional config {{taskmanager.checkpoints.max-concurrent}} that limits the number of concurrent checkpoints on the TM for safety net.

this configure {{taskmanager.checkpoints.max-concurrent}}, and the default value for maxConcurrentCheckpoints=1 is 1 and unlimited for maxConcurrentCheckpoints > 1.
 * If maxConcurrentCheckpoints = 1, the default {{taskmanager.checkpoints.max-concurrent}} is 1.
 * If maxConcurrentCheckpoints > 1 the default value for {{taskmanager.checkpoints.max-concurrent}}, is unlimited 

should not take manually triggered checkpoints/savepoints into account.



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