GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/23266
[SPARK-26313][SQL] move read related methods from Table to read related
mix-in traits
## What changes were proposed in this pull request?
As discussed in https://github.com/apache/spark/pull/23208/files#r239684490
, we should put read related methods in read related mix-in traits like
`SupportsBatchRead`, to support write-only table.
In the `Append` operator, we should skip schema validation if the table is
write-only. This will be done when we finish the write API refactor in
https://github.com/apache/spark/pull/23208/
## How was this patch tested?
existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark ds-read
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/23266.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #23266
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commit da520cc6e7daa36c7d7fabdb0a08d4b4341250b9
Author: Wenchen Fan <wenchen@...>
Date: 2018-12-09T08:32:51Z
move read related methods from Table to read related mix-in traits
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