[HIVE-6750] Hive printing debug information in stdout after the end of CLI session

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.14.0
• Fix Version/s: 0.13.0
• Component/s: CLI

Environment

Open JDK6

• Assignee: Vaibhav Gumashta
• Reporter: Vaibhav Gumashta
• Created: 26/Mar/14 00:31
• Updated: 27/Mar/14 00:21
• Resolved: 27/Mar/14 00:07

Description

$ hive -e "show tables;"

OK
table1
table2
table3
Time taken: 0.694 seconds, Fetched: 3 row(s)
classLoader = java.net.URLClassLoader@29978933
SharedSecrets.getJavaNetAccess()=java.net.URLClassLoader$7@4b7d03c5

Observe the last two lines that are printed upon the end of Hive CLI session.

JavaUtils#closeClassLoader uses reflection to invoke sun.misc.ClassLoaderUtil.releaseLoader. Just peeking at the implementation of this method clearly showed this:

            System.out.println ("classLoader = " + classLoader);
            System.out.println ("SharedSecrets.getJavaNetAccess()="+SharedSecrets.getJavaNetAccess());

See line 80-81 at http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/sun/misc/ClassLoaderUtil.java.

Issue Links

• links to: Review Board