Mongodb has different statistics after import and before export.

  mongodb, question

This is the analysis before exporting on windows:


Then there is the result after import on mac:


Why are the statistics before and after import inconsistent?

1, the number of records is consistent;

2. Other statistical information is inconsistent, which may be:

1) Due to different file systems of operating systems.
 2) WT Storage Engine for MongoDB on 2)mac.

For reference.

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