Christopher Tubbs created ZOOKEEPER-3766:
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Summary: zkServer and other scripts should export CLASSPATH rather
than use -cp
Key: ZOOKEEPER-3766
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3766
Project: ZooKeeper
Issue Type: Improvement
Components: scripts
Affects Versions: 3.5.7
Reporter: Christopher Tubbs
ZooKeeper's launch scripts use `-cp` to pass the class path to Java when
launching. This creates insanely large command-lines which are completely
unnecessary.
Java respects the CLASSPATH environment variable, and this is how the class
path should be passed to Java when the process launches.
So, instead of doing {{java -cp $CLASSPATH ...}}, the scripts should be doing
{{export CLASSPATH; java ...}}.
The long command-lines make it difficult to troubleshoot, or view running
process lists in tools like top, htop, ps, but also make it impossible to
search and manage using tools like pgrep and pkill, which can only search for
the first 4096 characters in the command-line. (See
https://github.com/apache/fluo-uno/issues/243#issuecomment-601553260 for a
specific issue involving this limit caused by ZK's scripts.)
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