[KAFKA-7839] CLASSPATH with single component containing globs breaks kafka-run-class.sh

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.11.0.3
• Fix Version/s: 0.11.0.3
• Component/s: core
• Assignee: Unassigned
• Reporter: Robert Wunderer
• Created: 18/Jan/19 08:33
• Updated: 11/Dec/23 16:23

Description

This issue is very similar to KAFKA-3692, but occurs further down in kafa-run-class.sh:

If at the end of all processing CLASSPATH contains only a single component including wildcards, the shell will evaluate CLASSPATH on starting Java, thus breaking the command line.

To elaborate:

Problem:
If CLASSPATH is '/some/path/*', then

java -cp $CLASSPATH

becomes

java -cp /some/path/*

which in turn becomes

java -cp /some/path/file1 /some/path/file2

Solution:
This can be prevented by encapsulating CLASSPATH in quotes:

java -cp "$CLASSPATH"

which becomes

java -cp "/some/path/*"

and is handed like that to Java.

Issue Links

• relates to: KAFKA-3692 Wildcards in External CLASSPATH may cause it not be included in the CLASSPATH
• relates to: KAFKA-6478 kafka-run-class.bat fails if CLASSPATH contains spaces
• links to: GitHub Pull Request #6166