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https://issues.apache.org/jira/browse/CAMEL-17229?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen resolved CAMEL-17229.
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Resolution: Fixed
> The file consumer finds files before they have content
> ------------------------------------------------------
>
> Key: CAMEL-17229
> URL: https://issues.apache.org/jira/browse/CAMEL-17229
> Project: Camel
> Issue Type: Sub-task
> Components: tests
> Reporter: Karen Lease
> Assignee: Karen Lease
> Priority: Major
> Fix For: 3.15.0
>
>
> Unit tests for the file component frequently fail on the first execution when
> run with Junit5 parallel because the content of the file doesn't match the
> expected result.
> This is due to the way files are created when using
> template.sendBodyAndHeader(...) with a fileUrl. Currently the file is created
> and written using FileOperations.writeFileByStream() which first creates the
> file and then writes the content read from the body as an input stream.
> Also to speed up the tests, the default initialDelay of the file endpoint is
> overridden in almost all cases and set to 0 which means the File consumer
> starts to immediately poll the destination directory.
> When many tests are run in parallel, it frequently happens that the the
> FileConsumer thread reads the empty file before the FileProducer thread
> writes it and closes it. There are 2 solutions:
> * use some initial delay such as 100 or 200ms. This reduces the number of
> failures but does not completely solve the issues
> * add another case in FileOperations.storeFile() which already has several,
> which will check if the body content is a string and directly write it using
> the java Files.writeString() method. In my tests this appears to totally
> eliminate the issues of files being consumed before they are ready.
> Although such issues occur in the unit tests, it appears that it could also
> be an issue in non-test use cases if the consumer finds a file which is still
> being written.
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