Github user parthchandra commented on the pull request:
https://github.com/apache/drill/pull/254#issuecomment-156601055
I used an alternate cache file because the code is simplistic and uses
Jackson deserialization which essentially means that one needs to know the
version of the file before one reads it. Right now I also ignore the older
metadata cache file and remove it if refresh metadata is called.
I could maintain multiple versions and dispatch on version, though I would
still prefer to keep the version info in the file name.
Let me know if you think that is necessary.
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