zkServer.sh uses sh's builtin echo on BSD, behaves incorrectly.
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Key: ZOOKEEPER-722
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-722
Project: Zookeeper
Issue Type: Bug
Components: scripts
Environment: Mac OS X
Reporter: Ivan Kelly
Priority: Minor
zkServer.sh output the PID of the zookeeper process with:
echo -n $! > "$ZOOPIDFILE"
This uses -n which sh's builtin echo does not support. From echo's manpage.
<snip>
Some shells may provide a builtin echo command which is similar or
identical to this utility. Most notably, the builtin echo in sh(1) does not
accept
the -n option. Consult the builtin(1) manual page.
</snip>
This means that echo -n PID > ZOOPIDFILE will mean the contents of ZOOPIDFILE
will be "-n PID". This stops zkServer.sh stop from working correctly.
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