2010YOUY01 opened a new issue, #15939:
URL: https://github.com/apache/datafusion/issues/15939

   ### Describe the bug
   
   When running several memory consuming queries in datafusion-cli, the system 
memory won't be released after the query ends, the memory usage from different 
queries are accumulated, until `datafusion-cli` is exited.
   
   ### To Reproduce
   
   1. Compile and run datafusion-cli (commit 8c42a65a4)
   2. I'm using MacOS's `Application Monitor` GUI to check memory usage of 
`datafusion-cli` process
   3. Execute several memory-intensive queries, and memory usage accumulates 
over time.
   ```
   select *
   from generate_series(1,100000000) as t1(v1)
   order by v1;
   
   -- datafusion-cli process: 1.5G memory
   
   select *
   from generate_series(1,200000000) as t1(v1)
   order by v1;
   
   -- datafusion-cli process: 3.2G memory
   
   select 1;
   
   -- Still 3.2G
   ```
   
   ### Expected behavior
   
   _No response_
   
   ### Additional context
   
   _No response_


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