sandeep-katta commented on issue #26777: [SPARK-30134][SQL]  Support DELETE JAR 
feature in SPARK
URL: https://github.com/apache/spark/pull/26777#issuecomment-566004250
 
 
   let me make it clear
   
   This PR aims at solving following use case,.
   
   user can update the jar definition and load to spark without restarting the 
thrift server. 
   
   let's say I have jar **myfunction.jar** and I loaded to spark using `add 
jar` command. And this jar definition is changed
   
   **Before this PR**
   I need to update the jar and restart the thrift server to take effect.
   
   **After this PR**
   Execute `Delete JAR` command, update the jar and execute `ADD JAR` command. 
**No need of restarting the thrift server**.
   

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