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https://issues.apache.org/jira/browse/NIFI-1661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15245843#comment-15245843
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ASF GitHub Bot commented on NIFI-1661:
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Github user ckmcd commented on the pull request:
https://github.com/apache/nifi/pull/322#issuecomment-211429563
I've update the PR to address the issues (1 & 2) from above.
1. Updated the EL Guide to use plus() instead of add()
2. Use Math.abs() so as only to generate non-negative numbers. Updated EL
guide to reflect this change.
> Expression language should support a random function
> ----------------------------------------------------
>
> Key: NIFI-1661
> URL: https://issues.apache.org/jira/browse/NIFI-1661
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Christopher McDermott
> Assignee: Joe Skora
> Priority: Minor
> Fix For: 0.7.0
>
>
> Random would be a subjectless function that generates a 32? bit random
> number. The random number generator need not be cryptographically secure.
> A use case would be for random be to generate a random pattern across some
> number of file paths to be used with putFile.
> Example - puts files randomly to /my-dirs/dir-1, /my-dirs/dir-2,
> /my-dirs/dir-3
> /my-dirs/dir-${random():mod(3):plus(1)}/
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