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https://issues.apache.org/jira/browse/FLINK-13441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16901596#comment-16901596
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Kurt Young commented on FLINK-13441:
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FYI, I also modified tpch end-to-end tests to cover this scenario:
[https://github.com/apache/flink/commit/5b6b33fa8160275fe3c1bf62d113bc71c12edba4]
> Add batch sql E2E test which runs with fewer slots than parallelism
> -------------------------------------------------------------------
>
> Key: FLINK-13441
> URL: https://issues.apache.org/jira/browse/FLINK-13441
> Project: Flink
> Issue Type: Test
> Components: API / DataSet, Tests
> Reporter: Till Rohrmann
> Assignee: Alex
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.9.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> We should adapt the existing batch E2E test to use the newly introduced
> {{ScheduleMode#LAZY_FROM_SOURCES_WITH_BATCH_SLOT_REQUEST}} and verify that
> the job runs on a cluster with fewer slots than the job's parallelism. In
> order to make this work, we need to set the shuffles to be blocking via
> {{ExecutionMode#BATCH}}. As a batch job we should use the
> {{DataSetAllroundTestProgram}}.
> *Update:* currently, the
> {{ScheduleMode#LAZY_FROM_SOURCES_WITH_BATCH_SLOT_REQUEST}} option is set only
> by table planner(s) and cannot be set (configured) for general purpose
> (batch) job. As agreed offline, this ticket would add a new e2e test for
> batch sql job instead of modifying {{DataSetAllroundTestProgram}}.
>
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