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https://issues.apache.org/jira/browse/FLINK-40662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn Visser reassigned FLINK-40662:
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Assignee: Martijn Visser
> 'Run kubernetes Materialized Table test' fails because the SQL Gateway
> returns a null session handle
> ----------------------------------------------------------------------------------------------------
>
> Key: FLINK-40662
> URL: https://issues.apache.org/jira/browse/FLINK-40662
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Gateway
> Affects Versions: 2.3.0, 2.2.1
> Reporter: Martijn Visser
> Assignee: Martijn Visser
> Priority: Major
> Labels: pull-request-available, test-stability
>
> The e2e script waits for the gateway, gets {{SqlGateway REST endpoint is
> up.}}, and then the session it opens comes back empty, so every following
> request is sent to the literal path {{null}}:
> {code}
> Sep 14 10:00:03 SqlGateway REST endpoint is up.
> Sep 14 10:00:03 [INFO] Create a new session
> Sep 14 10:00:05 [INFO] Session Handle null
> Sep 14 10:00:05 [INFO] Create catalog & database
> Sep 14 10:00:05 Configure session null create catalog if not exists
> test_catalog with (...) failed:
> {"errors":["org.apache.flink.runtime.rest.handler.RestHandlerException: Bad
> request, could not parse parameters: Cannot resolve path parameter
> (session_handle) from value \"null\"."]}
> {code}
> {code}
> Sep 14 10:00:16 [FAIL] Test script contains errors.
> Sep 14 10:00:16 [FAIL] 'Run kubernetes Materialized Table test' failed after
> 1 minutes and 21 seconds! Test exited with exit code 1 and the logs contained
> errors, exceptions or non-empty .out files
> {code}
> Two earlier gateway starts in the same run came up in one to two seconds and
> worked, so the endpoint being reachable is not enough on its own here.
> First seen on the 2026-09-12 nightly, the 2026-09-11 nightly was still clean.
> Five of the twelve release-2.3 Azure runs in the window hit it:
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=79037
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=79029
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=79020
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=79010
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=79002
> FLINK-40123 and FLINK-39132 are the same script failing for other reasons.
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