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https://issues.apache.org/jira/browse/FLINK-20645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17250893#comment-17250893
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Li Wang commented on FLINK-20645:
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Related PR - https://github.com/apache/flink/pull/14411
> Extra space typo when assembling dynamic configs
> ------------------------------------------------
>
> Key: FLINK-20645
> URL: https://issues.apache.org/jira/browse/FLINK-20645
> Project: Flink
> Issue Type: Bug
> Reporter: Li Wang
> Priority: Major
> Labels: pull-request-available
>
> while starting task manager, I got the error below
> {code:java}
> "Caused by: org.apache.flink.configuration.IllegalConfigurationException: The
> required configuration option Key: 'taskmanager.cpu.cores' , default: null
> (fallback keys: []) is not set
> {code}
>
> Checking TM starting command I got something like
> {code:java}
> -D taskmanager.memory.framework.off-heap.size=134217728b -D
> taskmanager.memory.network.max=67108864b -D
> taskmanager.memory.network.min=67108864b -D
> taskmanager.memory.framework.heap.size=134217728b -D
> taskmanager.memory.managed.size=57346620b -D taskmanager.cpu.cores=1.0 -D
> taskmanager.memory.task.heap.size=1518663108b -D
> taskmanager.memory.task.off-heap.size=0b
> {code}
> Looks like the extra spaces between "-D" and parameters causes those dynamic
> options can't be passed in correctly.
> Related code is
> [here|https://github.com/apache/flink/blob/2ad92169a4a4ffc92d32783f8777a132e1dac7c4/flink-core/src/main/java/org/apache/flink/configuration/ConfigurationUtils.java#L180]
>
>
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