[FLINK-15504] Flink suppresses stdout/stderr during JobGraph generation from JAR

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.10.0
• Component/s: Client / Job Submission
• Labels: pull-request-available
• Assignee: Maximilian Michels
• Reporter: Maximilian Michels
• Created: 07/Jan/20 15:43
• Updated: 29/Jan/20 12:19
• Resolved: 10/Jan/20 17:10

Description

Flink uses the OptimizerPlanEnvironment which replaces stdout/stderr during job graph creation. This was intended only for previewing the plan, but other parts of Flink, e.g. the Rest API have started to use this code as well.

It may be acceptable to suppress output during plan preview, but we should not suppress the output during execution, e.g. via the REST API.

Issue Links

• causes: BEAM-9060 Flink suppresses stdout/stderr during JobGraph generation from JAR
• relates to: FLINK-15651 JarHandlerTest.testRunJar fails on travis
• links to: GitHub Pull Request #10811