GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/15458
[SPARK-17899][SQL] add a debug mode to keep raw table properties in
HiveExternalCatalog
## What changes were proposed in this pull request?
Currently `HiveExternalCatalog` will filter out the Spark SQL internal
table properties, e.g. `spark.sql.sources.provider`,
`spark.sql.sources.schema`, etc. This is reasonable for external users as they
don't want to see these internal properties in `DESC TABLE`.
However, as a Spark developer, sometimes we do wanna see the raw table
properties. This PR adds a new internal SQL conf, `spark.sql.debug`, to enable
debug mode and keep these raw table properties.
This config can also be used in similar places where we wanna retain debug
information in the future.
## How was this patch tested?
new test in MetastoreDataSourcesSuite
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark debug
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15458.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 #15458
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commit e821f1a9d19215fe180ffcbd8183aabd1185a316
Author: Wenchen Fan <wenc...@databricks.com>
Date: 2016-10-13T04:21:01Z
add a debug mode to keep raw table properties in HiveExternalCatalog
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