Reamer commented on pull request #4127:
URL: https://github.com/apache/zeppelin/pull/4127#issuecomment-879604345


   I see the following error quite often.
   ```
   2021-07-13T05:53:46.8447034Z SLF4J: Actual binding is of type 
[org.slf4j.impl.Log4jLoggerFactory]
   2021-07-13T05:53:46.8448574Z ##[error]Exception in thread "main" 
java.lang.NumberFormatException: For input string: "--conf spark.cores.max=2 "
   2021-07-13T05:53:46.8450991Z         at 
java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
   2021-07-13T05:53:46.8452128Z         at 
java.lang.Integer.parseInt(Integer.java:580)
   2021-07-13T05:53:46.8452816Z         at 
java.lang.Integer.parseInt(Integer.java:615)
   ```
   We missed the trim.


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