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https://issues.apache.org/jira/browse/NIFI-4427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16184338#comment-16184338
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Randy Bovay commented on NIFI-4427:
-----------------------------------

!Multiple Duplicate Filenames.png!

[2017-09-28 11:39:28,426] ERROR [Timer-Driven Process Thread-31] 
"o.a.nifi.processors.script.ExecuteScript" 
ExecuteScript[id=23b6e4e6-015c-1000-bf56-01369e55cfd2] Failed to process 
session due to org.apache.nifi.processor.exception.ProcessException: 
javax.script.ScriptException: 
org.apache.nifi.controller.repository.ContentNotFoundException: 
org.apache.nifi.controller.repository.ContentNotFoundException: Could not find 
content for StandardContentClaim 
[resourceClaim=StandardResourceClaim[id=1506450019018-35994, 
container=content001, section=154], offset=1007892, length=1114] in <script> at 
line number 14: {}
org.apache.nifi.processor.exception.ProcessException: 
javax.script.ScriptException: 
org.apache.nifi.controller.repository.ContentNotFoundException: 
org.apache.nifi.controller.repository.ContentNotFoundException: Could not find 
content for StandardContentClaim 
[resourceClaim=StandardResourceClaim[id=1506450019018-35994, 
container=content001, section=154], offset=1007892, length=1114] in <script> at 
line number 14

> Default for FlowFile's filename should be the FlowFile's UUID
> -------------------------------------------------------------
>
>                 Key: NIFI-4427
>                 URL: https://issues.apache.org/jira/browse/NIFI-4427
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Core Framework
>            Reporter: Mark Payne
>         Attachments: Multiple Duplicate Filenames.png
>
>
> Currently, when a new FlowFile is created without any parents, the filename 
> is set to System.nanoTime(). This is likely to result in filename collisions 
> when operating at a high rate and the extra System call could be avoided. 
> Since we are already generating a unique UUID we should just use that as the 
> filename.



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