[ 
https://issues.apache.org/jira/browse/NIFI-9527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17490631#comment-17490631
 ] 

David Handermann commented on NIFI-9527:
----------------------------------------

I was not able to reproduce this issue on Azul Zulu Java 11.0.12 running on 
macOS 12.2 with the current main branch of NiFi 1.16.0-SNAPSHOT.

However, running under Java 17.0.2 throws a similar exception on startup.
{noformat}
org.xerial.snappy.SnappyError: [FAILED_TO_LOAD_NATIVE_LIBRARY] Unable to make 
protected final java.lang.Class 
java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
 throws java.lang.ClassFormatError accessible: module java.base does not "opens 
java.lang" to unnamed module @7f5179be
        at 
org.xerial.snappy.SnappyLoader.injectSnappyNativeLoader(SnappyLoader.java:297)
        at org.xerial.snappy.SnappyLoader.load(SnappyLoader.java:227)
        at org.xerial.snappy.Snappy.<clinit>(Snappy.java:48)
        at 
org.apache.nifi.processors.hive.PutHiveStreaming.<clinit>(PutHiveStreaming.java:158)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:467)
        at 
org.apache.nifi.nar.StandardExtensionDiscoveringManager.getClass(StandardExtensionDiscoveringManager.java:334)
        at 
org.apache.nifi.documentation.DocGenerator.documentConfigurableComponent(DocGenerator.java:100)
        at 
org.apache.nifi.documentation.DocGenerator.generate(DocGenerator.java:65)
        at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:1014)
        at org.apache.nifi.NiFi.<init>(NiFi.java:170)
        at org.apache.nifi.NiFi.<init>(NiFi.java:82)
        at org.apache.nifi.NiFi.main(NiFi.java:330)
{noformat}
The error is certainly related an older version of snappy-java 1.0.5 packaged 
in {{{}nifi-hive-nar{}}}. [Version 
1.1.7.3|https://github.com/xerial/snappy-java/blob/master/Milestone.md] 
introduced support for Java 9 modules. Version 1.1.7.6 set the minimum Java 
version 8, but there do not appear to be any other notable changes.

Upgrading module references to a newer version of snappy-java looks like an 
improvement to address multiple issues.

> nifi-hive-nar fails to load because of the old snappy-java jar
> --------------------------------------------------------------
>
>                 Key: NIFI-9527
>                 URL: https://issues.apache.org/jira/browse/NIFI-9527
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Extensions
>    Affects Versions: 1.15.0, 1.15.2
>         Environment: Linux 3.10.0-1160.49.1.el7.x86_64 #1 SMP Tue Nov 9 
> 16:09:48 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
>            Reporter: Saurabh B
>            Assignee: David Handermann
>            Priority: Minor
>
> nifi-hive-nar has old version of snappy-java jar (snappy-java-1.0.5.jar) 
> which fails to load. New version of snappy-java-1.1.8.4.jar works.
>  
> {{2022-01-03 12:11:19,126 ERROR [main] org.apache.nifi.NiFi Failure to launch 
> NiFi}}
> {{org.xerial.snappy.SnappyError: [FAILED_TO_LOAD_NATIVE_LIBRARY] null}}
> {{        at org.xerial.snappy.SnappyLoader.load(SnappyLoader.java:239)}}
> {{        at org.xerial.snappy.Snappy.<clinit>(Snappy.java:48)}}
> {{        at 
> org.apache.nifi.processors.hive.PutHiveStreaming.<clinit>(PutHiveStreaming.java:158)}}
> {{        at java.base/java.lang.Class.forName0(Native Method)}}
> {{        at java.base/java.lang.Class.forName(Class.java:398)}}
> {{        at 
> org.apache.nifi.nar.StandardExtensionDiscoveringManager.getClass(StandardExtensionDiscoveringManager.java:330)}}
> {{        at 
> org.apache.nifi.documentation.DocGenerator.documentConfigurableComponent(DocGenerator.java:100)}}
> {{        at 
> org.apache.nifi.documentation.DocGenerator.generate(DocGenerator.java:65)}}
> {{        at 
> org.apache.nifi.web.server.JettyServer.start(JettyServer.java:1139)}}
> {{        at org.apache.nifi.NiFi.<init>(NiFi.java:170)}}
> {{        at org.apache.nifi.NiFi.<init>(NiFi.java:82)}}
> {{        at org.apache.nifi.NiFi.main(NiFi.java:330)}}



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