Considerations for Hive on JDK 17

When configured correctly, Hive works on JDK 17, but it is still possible to encounter an error such as:

Caused by: java.lang.reflect.InaccessibleObjectException: <detailed description>: module java.base does not "opens <module name>" to unnamed module 

Here is an example of the error:

Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private final int java.time.LocalDate.year accessible: module java.base does not "opens java.time" to unnamed module 

To fix the issue, you must add the following fix:

--add-opens java.base/<module name>=ALL-UNNAMED

For example:

--add-opens java.base/java.time=ALL-UNNAMED 

You must add the fix in two places:

• HADOOP_OPTS variable in the hive-env.sh conf file
• mapreduce.map.java.opts, mapreduce.reduce.java.opts, yarn.app.mapreduce.am.command-opts properties of the hive-site.xml conf file

Here is an example of making the fix:

1. Add the following entry to the hive-env.sh file:

   export HADOOP_OPTS="-XX:+IgnoreUnrecognizedVMOptions --add-opens java.base/java.time=ALL-UNNAMED"

2. Add the following properties to the hive-site.xml file:

   <property>
       <name>mapreduce.map.java.opts</name>
       <value>-Xmx900m --add-opens java.base/java.lang=ALL-UNNAMED -XX:+UseParallelGC --add-opens java.base/java.net=ALL-UNNAMED --add-opens java.base/java.nio=ALL-UNNAMED --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.util.concurrent.atomic=ALL-UNNAMED --add-opens java.base/java.util.regex=ALL-UNNAMED --add-opens java.base/java.time=ALL-UNNAMED</value>
   </property>
   <property>
       <name>mapreduce.reduce.java.opts</name>
       <value>-Xmx2560m --add-opens java.base/java.lang=ALL-UNNAMED -XX:+UseParallelGC --add-opens java.base/java.net=ALL-UNNAMED --add-opens java.base/java.nio=ALL-UNNAMED --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.util.concurrent.atomic=ALL-UNNAMED --add-opens java.base/java.util.regex=ALL-UNNAMED --add-opens java.base/java.time=ALL-UNNAMED</value>
   </property>
   <property>
       <name>yarn.app.mapreduce.am.command-opts</name>
       <value>-Xmx2560m --add-opens java.base/java.lang=ALL-UNNAMED -XX:+UseParallelGC --add-opens java.base/java.net=ALL-UNNAMED --add-opens java.base/java.nio=ALL-UNNAMED --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.util.concurrent.atomic=ALL-UNNAMED --add-opens java.base/java.util.regex=ALL-UNNAMED --add-opens java.base/java.time=ALL-UNNAMED</value>
   </property>