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https://issues.apache.org/jira/browse/FLINK-25444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17472766#comment-17472766
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Chesnay Schepler commented on FLINK-25444:
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Well in practice it is a TextElement. Are there any instances at the moment
that actually embed links/code?
> ExecutionConfig can not be Serializable due to TextElement used in side
> -----------------------------------------------------------------------
>
> Key: FLINK-25444
> URL: https://issues.apache.org/jira/browse/FLINK-25444
> Project: Flink
> Issue Type: Bug
> Components: API / Core
> Affects Versions: 1.14.0, 1.14.2, 1.14.3
> Reporter: Wen Zhou
> Priority: Critical
>
> This should be a bug introduced by the latest flink commit of file
> [flink-core/src/main/java/org/apache/flink/api/common/ExecutionConfig.java|https://github.com/apache/flink/commit/9e0e0929b86c372c9243daad9d654af9e7718708#diff-7a439abdf207cf6da8aa6c147b38c1346820fe786afbf652bc614fc377cdf238]
> Diff the file, we can find TextElement is used here where ClosureCleanerLevel
> is is used as a memeber of Serializable ExecutionConfig.
> [TextElement in ClosureCleanerLevel|https://i.stack.imgur.com/ky3d8.png]
> The simplest way to verify the problem is running code as followings in flink
> 1.13.5 and 1.14.x, the exception is reproduced in 1.14.x . And the diff
> between 1.13.5 and 1.14.x is only lates commit
>
> @Test
> public void testExecutionConfigSerializable() throws Exception {
> ExecutionConfig config = new ExecutionConfig();
> ClosureCleaner.clean(config, ExecutionConfig.ClosureCleanerLevel.RECURSIVE,
> true);
> }
>
> The problem can be found here
> [https://stackoverflow.com/questions/70443743/flink-blockelement-exception-when-updating-to-version-1-14-2/70468925?noredirect=1#comment124597510_70468925]
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