[jira] [Assigned] (IOTDB-2220) Unexpected MQTTService shutdown causing unit cases runs too slow

["Eric Pai (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IOTDB-2220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Pai reassigned IOTDB-2220:
-------------------------------

    Assignee: Eric Pai

> Unexpected MQTTService shutdown causing unit cases runs too slow
> ----------------------------------------------------------------
>
>                 Key: IOTDB-2220
>                 URL: https://issues.apache.org/jira/browse/IOTDB-2220
>             Project: Apache IoTDB
>          Issue Type: Bug
>    Affects Versions: master branch
>            Reporter: Eric Pai
>            Assignee: Eric Pai
>            Priority: Major
>             Fix For: master branch
>
>         Attachments: image-2021-12-28-17-44-34-272.png
>
>
> I invegistate recent CI and find some simple unit test cases take too long time to run.
> !image-2021-12-28-17-44-34-272.png!
> I add some logs to watch the unit test and see that when EnvironmentUtils.cleanEnv() is called, the MQTTService costs at least 2 seconds to stop. If there're many cases using @Before and @After to setup and teardown environments, it will cost a lot of time. (PhysicalPlanTest has 86 individual test cases).
>  
> The root cause is in the MQTTSinkTest: The setUp() enables the MQTTService in the IoTDBDescriptor but the tearDown() doesn't reset it. This causes the all following tests enables the MQTTService, as junit is a single process and IoTDBDescriptor is a singletion instance.



--
This message was sent by Atlassian Jira
(v8.20.1#820001)