Should we always call destory before removing a mapped file ?

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Please ensure that your bug report is clear and that it is complete. Otherwise, we may be unable to understand it or to reproduce it, either of which would prevent us from fixing the bug. We strongly recommend the report(bug report or feature request) could include some hints as the following:

**BUG REPORT**

1. Please describe the issue you observed:

In MappedFileQueue:273 we have

```
while (iterator.hasPrevious()) {
mappedFileLast = iterator.previous();
if (offset >= mappedFileLast.getFileFromOffset()) {
int where = (int) (offset % mappedFileLast.getFileSize());
mappedFileLast.setFlushedPosition(where);
mappedFileLast.setWrotePosition(where);
mappedFileLast.setCommittedPosition(where);
break;
} else {
// Can we add destroy here ?
// mappedFileLast.destroy();
iterator.remove();
}
}
```

- What did you expect to see?

- What did you see instead?

2. Please tell us about your environment:

3. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc):

**FEATURE REQUEST**

1. Please describe the feature you are requesting.

2. Provide any additional detail on your proposed use case for this feature.

2. Indicate the importance of this issue to you (blocker, must-have, should-have, nice-to-have). Are you currently using any workarounds to address this issue?

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