RussellSpitzer commented on pull request #1819:
URL: https://github.com/apache/iceberg/pull/1819#issuecomment-733874190


   Something that this brings up for me, is how does a user discover the
   information about these defaults? Particularly from a full SQL context, I
   wonder if it makes sense to create a "Help" command which prints out this
   info or returns it as a dataframe. Something like
   
   ```help expireSnapshots```
   
   On Wed, Nov 25, 2020 at 11:53 AM Ryan Blue <[email protected]> wrote:
   
   > If we want to add table config in a follow-up, then I think we should go
   > ahead and use a reasonable default here. If older_than is not set, then
   > let's just default it to System.currentTimeMillis() - (3 days in millis).
   > I think that's a good default and we can fix the default interval with a
   > table property after this is done.
   >
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