[GitHub] [incubator-iceberg] arina-ielchiieva opened a new issue #181: Add mechanism to expire old metadata versions

[GitBox <gi...@apache.org>]

arina-ielchiieva opened a new issue #181: Add mechanism to expire old metadata versions
URL: https://github.com/apache/incubator-iceberg/issues/181
 
 
   Based on the discussion on dev mailing list:
   
   Ryan Blue
   
   > So far, we’ve kept these around to help troubleshoot format problems. It has been a fairly cheap way to be able to see exactly what happened to the table. But we’re also getting to the point where we no longer need to refer back to them and should think about adding a way to remove them. Technically, you don’t need to keep them around once you’ve committed the new version, but an easy way to roll back is to change the database pointer so it is nice to keep a few of them.
   I think we can probably build a way to expire old metadata versions by looking for a naming pattern, like v(num)-(uuid).metadata.json[.gz].

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