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https://issues.apache.org/jira/browse/FLINK-23493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17400203#comment-17400203
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Huang Xingbo commented on FLINK-23493:
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Let me synchronize the results of the survey.
1. The reason for hang is that the process started on the java side is waiting
for the python side to start the client to connect to it, but I don’t know why
the python side has not been able to connect to it. In fact, if there is an
error, python process will throw the error message and exit. So from the
perspective of the phenomenon, we can know there is no error in starting python
process. On the other hand, in lack of info logs, I haven't discover the root
cause of Python side can't connect to java side.
2. Another phenomenon is that all the hangs tests are in `cron_azure`. Compared
with the stages `cron_hadoop241`, `cron_hadoop313`, and `cron_scala212` which
will also test python related tests, `cron_azure` will use Azure vm to test.
But `cron_hadoop241`, `cron_hadoop313`, and `cron_scala212` will use the
Alibaba Cloud host to test directly.
3. From https://issues.apache.org/jira/browse/FLINK-22856, we update the vm
version from `ubuntu-16` to `ubuntu-20`, and I'm not sure whether it is
relevant to this.
> python tests hang on Azure
> --------------------------
>
> Key: FLINK-23493
> URL: https://issues.apache.org/jira/browse/FLINK-23493
> Project: Flink
> Issue Type: Bug
> Components: API / Python
> Affects Versions: 1.14.0, 1.13.1, 1.12.4
> Reporter: Dawid Wysakowicz
> Assignee: Huang Xingbo
> Priority: Blocker
> Labels: test-stability
> Fix For: 1.14.0
>
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=20898&view=logs&j=821b528f-1eed-5598-a3b4-7f748b13f261&t=4fad9527-b9a5-5015-1b70-8356e5c91490&l=22829
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