Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/15024
I have updated this PR according to these rules:
1. outside of `ExternalCatalog`, data source and hive tables should both
use `locationUri` to store table location.
2. inside `HiveExternalCatalog`:
2.1. do nothing for hive tables, same as before.
2.2. for data source tables, always store `locationUri` in table
properties(like provider, schema, etc.), and set `locationUri` to None if this
table is not hive-compatible.
3. before passing storage properties to `DataSource` as data source
options, add `locationUri` as `path` option, to keep the previous behaviour,
i.e. the `path` option always exists(even users didn't specify it when creating
table), and always equal to table location.
cc @rxin @yhuai @ericl @gatorsmile
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