Github user joewitt commented on the issue:
https://github.com/apache/nifi/pull/3174
it built with java 8. switched to 11. nifi starts up and appears to be
working great.
I did notice this on startup
nifi.sh: JAVA_HOME not set; results may vary
Java home:
NiFi home:
/Users/joe/development/nifi.git/nifi-assembly/target/nifi-1.9.0-SNAPSHOT-bin/nifi-1.9.0-SNAPSHOT
Bootstrap Config File:
/../development/nifi.git/nifi-assembly/target/nifi-1.9.0-SNAPSHOT-bin/nifi-1.9.0-SNAPSHOT/conf/bootstrap.conf
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by
org.apache.nifi.bootstrap.util.OSUtils
(file:/../development/nifi.git/nifi-assembly/target/nifi-1.9.0-SNAPSHOT-bin/nifi-1.9.0-SNAPSHOT/lib/bootstrap/nifi-bootstrap-1.9.0-SNAPSHOT.jar)
to method java.lang.ProcessImpl.pid()
WARNING: Please consider reporting this to the maintainers of
org.apache.nifi.bootstrap.util.OSUtils
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
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