ZooKeeper - Set Trace mask

[#1]

I am having trouble on my system trying to use the stmk command for Zookeeper.

[hadoop@los90hdpc4m3][~]$ echo "envi" | nc localhost 2181 | grep zookeeper.version
zookeeper.version=3.4.6-37--1, built on 11/29/2016 17:59 GMT

[hadoop@los90hdpc4m3][~]$ echo "gtmk" | nc localhost 2181
306

[hadoop@los90hdpc4m3][~]$ perl -e "print 'stmk', pack('q>', 0b0011111010)" | nc localhost 2181

The stmk command, built using the Perl example shown in the ZooKeeper Administrator Guide, just hangs and never returns. Has anyone else had better luck enabling Zookeeper tracing via stmk? This is on a HDP 2.5.3 system.

[#2]

As the Jira says, stmk is rarely used, but the current version of Zookeeper, ver. 3.4.6 was added in HDP-2.x, so yes, 3.4.7 or higher which fixes the bug should be added soon.