LuciferYang edited a comment on pull request #35262:
URL: https://github.com/apache/spark/pull/35262#issuecomment-1024049100


   I have another question:  
   
   When `memoryMode` is `MemoryMode.OFF_HEAP`, some `OffHeapColumnVector` will 
be create like `binaryValVector`, `lengthsVector` and so on. 
`OffHeapColumnVector` needs to call the `close` method  manually to release the 
allocated memory, but I can't find the corresponding call.
   
   SO there may be a memory leak. @parthchandra 
   
   
   
   


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