drcrallen edited a comment on issue #7509: Fix too many dentry cache slab 
objs#7508.
URL: https://github.com/apache/incubator-druid/pull/7509#issuecomment-484903798
 
 
   There's another hidden FS bug here:
   
   ```
   synchronized (files) {
     if (closed) {
       return;
     }
     ...    
   ```
   
   If two methods call this, and the first one that finishes causes the JVM to 
be shut down, then the other one may never finish and actually do the delete. 
It is at the author's discretion if they want to keep the scope of this PR to 
just #7508 or to fix up `LimitedTemporaryStorage::close`` in general
   
   If the author wishes to keep the scope limited, then I'm 👍 once the 
`isEmpty` change is made

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