Upstream failed whereas Upstream is alright

[nalepae]

Version: Version : 1.10.3-composer
Platform: 8 Airflow on Google Cloud Composer

Description:
Sometimes, some steps do not run because of "Failed Upstream" (orange color) whereas upstream is alright (green color).

Examples:

or

Additional informations:

• All steps except wait_for_dump, recort_start, join and record_end are Kubernetes Pod Operator.
• Re running by hand "orange" steps always solve the issue.

I'm not writing a bug ticket because I'm not 100% sure this issue come from Airflow itself, but may also come from Google Cloud Composer.

Does anyone already encountered this issue and/or solved it?

[boring-cyborg]

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