Yikun commented on a change in pull request #35176:
URL: https://github.com/apache/spark/pull/35176#discussion_r782927478



##########
File path: 
resource-managers/kubernetes/docker/src/main/dockerfiles/spark/entrypoint.sh
##########
@@ -36,6 +36,10 @@ if [ -z "$uidentry" ] ; then
     fi
 fi
 
+if [ -z "$JAVA_HOME" ]; then
+  JAVA_HOME=$(java -XshowSettings:properties -version 2>&1 > /dev/null | grep 
'java.home' | awk '{print $3}')

Review comment:
       @dongjoon-hyun Thanks for explanation, and the suggestion of `dpkg` arch 
is for `Dockerfile.java17` rather `entrypoint.sh`.
   
   




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