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Nifi not starting- because "extensionMapping" is null

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New Contributor

Dear Members,

I am just a beginner and trying to install NiFi for first time. I am having problem getting it working. I would appreciate help to fix the issue.

I have windows 7 32 bit.

I have installed LibericaJDK-19 just to get Nifi working. Else it was not working with java 8 as well for me.

I am trying nifi-1.19.1.

conf file is default

I have set JAVA_HOME to point to new JDK - 19

 

Last lines of nifi-bootstrap.log

2023-01-18 21:51:13,373 INFO [NiFi Bootstrap Command Listener] org.apache.nifi.bootstrap.RunNiFi Apache NiFi now running and listening for Bootstrap requests on port 51200
2023-01-18 21:53:44,866 ERROR [NiFi logging handler] org.apache.nifi.StdErr Failed to start web server: Cannot invoke "org.apache.nifi.nar.ExtensionMapping.size()" because "extensionMapping" is null
2023-01-18 21:53:44,866 ERROR [NiFi logging handler] org.apache.nifi.StdErr Shutting down...
2023-01-18 21:53:45,515 INFO [main] org.apache.nifi.bootstrap.RunNiFi NiFi never started. Will not restart NiFi

 

 

At start of nifi-app.log 

 

I get the warning

 

WARN [main] org.apache.nifi.nar.NarUnpacker Unable to load NAR library bundles due to java.util.zip.ZipException: zip END header not found Will proceed without loading any further Nar bundles
java.util.zip.ZipException: zip END header not found
at java.base/java.util.zip.ZipFile$Source.findEND(ZipFile.java:1483)
at java.base/java.util.zip.ZipFile$Source.initCEN(ZipFile.java:1491)
at java.base/java.util.zip.ZipFile$Source.<init>(ZipFile.java:1329)
at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1292)
at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:710)
at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:243)
at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:172)
at java.base/java.util.jar.JarFile.<init>(JarFile.java:345)
at java.base/java.util.jar.JarFile.<init>(JarFile.java:316)
at java.base/java.util.jar.JarFile.<init>(JarFile.java:282)
at org.apache.nifi.nar.NarUnpacker.determineDocumentedNiFiComponents(NarUnpacker.java:605)
at org.apache.nifi.nar.NarUnpacker.unpackDocumentation(NarUnpacker.java:550)
at org.apache.nifi.nar.NarUnpacker.unpackBundleDocs(NarUnpacker.java:287)
at org.apache.nifi.nar.NarUnpacker.mapExtensions(NarUnpacker.java:271)
at org.apache.nifi.nar.NarUnpacker.unpackNars(NarUnpacker.java:220)
at org.apache.nifi.nar.NarUnpacker.unpackNars(NarUnpacker.java:89)
at org.apache.nifi.nar.NarUnpacker.unpackNars(NarUnpacker.java:83)
at org.apache.nifi.nar.NarUnpacker.unpackNars(NarUnpacker.java:74)
at org.apache.nifi.NiFi.<init>(NiFi.java:142)
at org.apache.nifi.NiFi.<init>(NiFi.java:83)
at org.apache.nifi.NiFi.main(NiFi.java:332)

 

 

and at the end of nifi-app.log

 

2023-01-18 21:53:44,866 WARN [main] org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down.
java.lang.NullPointerException: Cannot invoke "org.apache.nifi.nar.ExtensionMapping.size()" because "extensionMapping" is null
at org.apache.nifi.documentation.DocGenerator.generate(DocGenerator.java:61)
at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:788)
at org.apache.nifi.NiFi.<init>(NiFi.java:172)
at org.apache.nifi.NiFi.<init>(NiFi.java:83)
at org.apache.nifi.NiFi.main(NiFi.java:332)
2023-01-18 21:53:44,889 INFO [Thread-0] org.apache.nifi.NiFi Application Server shutdown started
2023-01-18 21:53:44,890 INFO [Thread-0] org.apache.nifi.NiFi Application Server shutdown completed

 

 

I would appreciate for the help.

 

best regards

Muhammad

 

 

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