Jesse Gorzinski created KAFKA-10272: ---------------------------------------
Summary: kafka-server-stop.sh fails on IBM i Key: KAFKA-10272 URL: https://issues.apache.org/jira/browse/KAFKA-10272 Project: Kafka Issue Type: Bug Components: core Affects Versions: 2.5.0 Environment: IBM i 7.2 Reporter: Jesse Gorzinski On the IBM i platform, the `kafka-server-stop.sh` script always fails with an error message "No kafka server to stop" The underlying cause is because the script relies on the output of `ps ax` to determine the pid. More specifically: {code:java} PIDS=$(ps ax | grep -i 'kafka\.Kafka' | grep java | grep -v grep | awk '{print $1}') {code} On IBM i, the ps utility is unconventional and truncates the output with these arguments. For instance, here is part of the ps output {code:java} 584329 - A 0:00 /QOpenSys/QIBM/ProdData/SC1/OpenSSH/sbin/sshd -R 584331 - A 0:00 /QOpenSys/QIBM/ProdData/SC1/OpenSSH/libexec/sftp-serv 584332 - A 0:00 /QOpenSys/QIBM/ProdData/SC1/OpenSSH/sbin/sshd -R 584334 pts/5 A 0:00 -bash 584365 pts/7 A 0:08 java -Xmx512M -Xms512M -server -XX:+UseG1GC -XX:MaxGC 585353 pts/8 A 0:12 java -Xmx1G -Xms1G -server -XX:+UseG1GC -XX:MaxGCPaus 585690 pts/9 A 0:00 ps ax {code} Therefore, the resultant grep always comes up empty. When invoked with `ps -af`, it gives the whole command (when piped) but sticks in the UID by default {code:java} ps -af UID PID PPID C STIME TTY TIME CMD jgorzins 585353 583321 0 12:41:07 pts/8 0:41 java -Xmx1G -Xms1G -server -XX:+UseG1GC -XX:MaxGCPauseMillis=20 -XX:InitiatingHeapOccupancyPercent=35 -XX:+ExplicitGCInvokesConcurr jgorzins 585817 585794 0 14:44:25 pts/4 0:00 ps -af {code} So.... the following PID check works for IBM i: {code:java} PIDS=$(ps -af | grep -i 'kafka\.Kafka' | grep java | grep -v grep | awk '{print $2}') {code} so, a fix would be (I have verified this): {code:java} if [[ "OS400" == $(uname -s) ]]; then PIDS=$(ps -af | grep -i 'kafka\.Kafka' | grep java | grep -v grep | awk '{print $2}') else PIDS=$(ps ax | grep -i 'kafka\.Kafka' | grep java | grep -v grep | awk '{print $1}') fi {code} This all also applies to `zookeeper-server-stop.sh` -- This message was sent by Atlassian Jira (v8.3.4#803005)