[jira] [Created] (FLINK-17970) Increase default value of IO pool executor to 4 * #cores

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-17970:
-------------------------------------

             Summary: Increase default value of IO pool executor to 4 * #cores
                 Key: FLINK-17970
                 URL: https://issues.apache.org/jira/browse/FLINK-17970
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
    Affects Versions: 1.11.0
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann
             Fix For: 1.11.0


Currently, the default value of {{ClusterOptions.CLUSTER_IO_EXECUTOR_POOL_SIZE}} is #cores. I propose to increase it to 4 * #cores to support a higher load of blocking IO operations.

Moreover, I propose to use a cached thread pool instead of a fixed thread pool. That way, only those use cases which have high IO load will actually occupy the required resources to start more threads.

Last but not least, I propose to change the config option name from {{cluster.io-executor.pool-size}} to {{cluster.io-pool.size}} which is a bit shorter.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)