[jira] [Created] (SUBMARINE-487) submarine-spark-security: JNA does not work in uber jar

["Gustavo Martin (Jira)" <ji...@apache.org>]

Gustavo Martin created SUBMARINE-487:
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             Summary: submarine-spark-security: JNA does not work in uber jar
                 Key: SUBMARINE-487
                 URL: https://issues.apache.org/jira/browse/SUBMARINE-487
             Project: Apache Submarine
          Issue Type: Bug
          Components: Security
            Reporter: Gustavo Martin


In order to create an uber jar, Java packages must be renamed. Renaming packages make JNI fail.

 
 1. ranger-plugins-common requires JNA through com.kstruct:gethostname4j
     See the following code: [https://github.com/apache/ranger/blob/release-ranger-2.0.0/agents-common/src/main/java/org/apache/ranger/plugin/util/RangerRESTUtils.java#L83]

2. gethostname4j uses JNA, through net.java.dev.jna:jna
     See the followingcode: [https://github.com/mattsheppard/gethostname4j/blob/master/src/main/java/com/kstruct/gethostname4j/Hostname.java#L30]

3. net.java.dev.jna:jna uses JNI
     See the following code: [https://github.com/java-native-access/jna/blob/master/src/com/sun/jna/Native.java#L1018]

The native library used by JNA is libjnidispatch.so.

libjnidispatch.so was compiled with the package com.sun.jna (example for linux-x86-64):
{noformat}
readelf -aW libjnidispatch.so | grep Java_com_sun_jna_Native_getNativeVersion
   178: 000000000000bde0    24 FUNC    GLOBAL DEFAULT   12 Java_com_sun_jna_Native_getNativeVersion
   227: 000000000000bde0    24 FUNC    GLOBAL DEFAULT   12 Java_com_sun_jna_Native_getNativeVersion
{noformat}
 

Because maven-shade-plugin renames packages, JNA fails when trying to call the native method getNativeVersion (which is always called when using JNA for the first time):

{noformat}
Exception in thread "HiveServer2-Handler-Pool: Thread-81" java.lang.UnsatisfiedLinkError: submarine_spark_ranger_project.com.sun.jna.Native.getNativeVersion()Ljava/lang/String;
    at submarine_spark_ranger_project.com.sun.jna.Native.getNativeVersion(Native Method)
    at submarine_spark_ranger_project.com.sun.jna.Native.<clinit>(Native.java:197)
    at submarine_spark_ranger_project.com.kstruct.gethostname4j.Hostname$UnixCLibrary.<clinit>(Hostname.java:12)
    at submarine_spark_ranger_project.com.kstruct.gethostname4j.Hostname.getHostname(Hostname.java:30)
    at org.apache.ranger.plugin.util.RangerRESTUtil
{noformat}





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