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https://issues.apache.org/jira/browse/NIFI-5175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeff Storck resolved NIFI-5175.
-------------------------------
Resolution: Resolved
Based on further testing conducted with the docker and AWS images documented in
the comments, there does not seem to be an issue with running NiFi built on
Java 1.8 and running on Java 9+ with master.
> NiFi built with Java 1.8 needs to run on Java 9
> -----------------------------------------------
>
> Key: NIFI-5175
> URL: https://issues.apache.org/jira/browse/NIFI-5175
> Project: Apache NiFi
> Issue Type: Sub-task
> Reporter: Jeff Storck
> Assignee: Jeff Storck
> Priority: Major
> Fix For: 1.7.0
>
>
> The following issues have been encountered while attempting to run a Java
> 1.8-built NiFi on Java 9:
> ||Issue||Solution||Status||
> |JAXB classes cannot be found on the classpath|Add
> "--add-modules=java.xml.bind" to the commant that starts NiFi|Done|
> |NiFI boostrap not able to determine PID, restarts nifi after nifi.sh
> stop|Detect if NiFi is running on Java 9, and reflectively invoke
> Process.pid(), which was newly added to the Process API in Java 9|Done|
>
> ----
>
> ||Unaddressed issues/warnings with NiFi compiled on Java 1.8 running on Java
> 9+||Description||Solution||
> |WARNING: An illegal reflective access operation has occurred
> ..._specific class usage snipped_...
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future
> release|Reflective invocations are common in the code used in NiFi and its
> dependencies in Java 1.8|Full compliant migration to Java 9 and use
> dependencies that are Java 9 compliant|
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