[jira] [Created] (FLINK-5856) Need return redundant containers to yarn for yarn mode

[Shang Yuanchun (Jira)]

shuai.xu created FLINK-5856:
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             Summary: Need return redundant containers to yarn for yarn mode
                 Key: FLINK-5856
                 URL: https://issues.apache.org/jira/browse/FLINK-5856
             Project: Flink
          Issue Type: Bug
          Components: YARN
            Reporter: shuai.xu
            Assignee: shuai.xu


For flink on yarn mode, RM requests container from yarn according to the requirement of the JM. But the AMRMClientAsync used in yarn doesn't guarantee that the number of containers returned exactly equal to the number requested. So it need to record the number request by flink rm and return the redundant ones to yarn.



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