saLeox commented on pull request #3925:
URL: https://github.com/apache/zeppelin/pull/3925#issuecomment-1075893018
@Reamer @zjffdu Hi, sorry to comment here after merging for long time.
For the second improvement
```
Use exec [...] instead of eval [..] &, which means that the Java interpreter
process is not a fork of the shell script
-> no trap handling required in the start script
-> signals land in the JVM
```
I encounter an issue in version 0.10 for python interpreter and report to
you here:
Given that
```
export ZEPPELIN_IMPERSONATE_CMD='sudo -H -u ${ZEPPELIN_IMPERSONATE_USER}
bash -c '
```
and choose **User Impersonate** for python interpreter
After running paragraph, it will get some error as below:
```
[INFO] Interpreter launch command: sudo -H -u suns bash -c source
/home/zeppelin/zeppelin/conf/zeppelin-env.sh; java -Dfile.encoding=UTF-8
-Dlog4j.configuration=file:///home/zeppelin/zeppelin/conf/log4j.properties
-Dlog4j.configurationFile=file:///home/zeppelin/zeppelin/conf/log4j2.properties
-Dzeppelin.log.file=/home/zeppelin/zeppelin/logs/zeppelin-interpreter-python-suns-suns-zeppelin-data-zeppelin00.log
-Xms2048m -Xmx2048m -XX:MaxPermSize=512m -cp
:/home/zeppelin/zeppelin/local-repo/python/*:/home/zeppelin/zeppelin/interpreter/python/*:::/home/zeppelin/zeppelin/interpreter/zeppelin-interpreter-shaded-0.11.0-SNAPSHOT.jar
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer 10.71.27.67
23456 python-suns :
/home/zeppelin/zeppelin/bin/interpreter.sh: line 324: exec: sudo -H -u suns
bash -c: not found
```
I change the `exec` back to `eval` only for **Python** interpreter, the
problem is gone.
But the spark interpreter(not sure for the other interpreters) still need to
use `exec`, otherwise will get another error.
So the workaround from my side will looks like as below:
```
if [[ "${INTERPRETER_ID}" == "python" ]]; then
exec "${INTERPRETER_RUN_COMMAND[@]}"
else
exec "${INTERPRETER_RUN_COMMAND[@]}"
fi
```
Is it possible to take a look and figure out the solution?
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