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https://issues.apache.org/jira/browse/FLINK-32048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17721664#comment-17721664
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Yuxin Tan commented on FLINK-32048:
-----------------------------------
I will take a look. The reason may be that the parent class is migrated to
JUnit5 in https://issues.apache.org/jira/browse/FLINK-30815, the subclasses can
not be set to DEFAULT_PARALLELISM=3 in BatchAbstractTestBase, because the
subclass DecimalITCase is not JUnit5.
I will first update this class to JUnit5 to resolve the issue. And I created a
follow-up jira https://issues.apache.org/jira/browse/FLINK-32055 to resolve
this.
> DecimalITCase.testAggMinGroupBy fails with "Insufficient number of network
> buffers"
> -----------------------------------------------------------------------------------
>
> Key: FLINK-32048
> URL: https://issues.apache.org/jira/browse/FLINK-32048
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Network, Table SQL / Planner, Tests
> Affects Versions: 1.18.0
> Reporter: Lijie Wang
> Assignee: Yuxin Tan
> Priority: Critical
> Labels: test-stability
>
> [https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=48855&view=logs&j=0c940707-2659-5648-cbe6-a1ad63045f0a&t=075c2716-8010-5565-fe08-3c4bb45824a4]
> {code:java}
> May 10 09:37:41 Caused by: java.io.IOException: Insufficient number of
> network buffers: required 1, but only 0 available. The total number of
> network buffers is currently set to 2048 of 32768 bytes each. You can
> increase this number by setting the configuration keys
> 'taskmanager.memory.network.fraction', 'taskmanager.memory.network.min', and
> 'taskmanager.memory.network.max'.
> May 10 09:37:41 at
> org.apache.flink.runtime.io.network.buffer.NetworkBufferPool.internalCreateBufferPool(NetworkBufferPool.java:495)
> May 10 09:37:41 at
> org.apache.flink.runtime.io.network.buffer.NetworkBufferPool.createBufferPool(NetworkBufferPool.java:456)
> May 10 09:37:41 at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGateFactory.lambda$createBufferPoolFactory$3(SingleInputGateFactory.java:330)
> May 10 09:37:41 at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.setup(SingleInputGate.java:274)
> May 10 09:37:41 at
> org.apache.flink.runtime.taskmanager.InputGateWithMetrics.setup(InputGateWithMetrics.java:105)
> May 10 09:37:41 at
> org.apache.flink.runtime.taskmanager.Task.setupPartitionsAndGates(Task.java:969)
> May 10 09:37:41 at
> org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:654)
> May 10 09:37:41 at
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:562)
> May 10 09:37:41 at java.lang.Thread.run(Thread.java:748)
> {code}
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