GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/14727
[SPARK-17166] [SQL] Store Table Properties Specified in CTAS after
Conversion to Data Source Tables
## What changes were proposed in this pull request?
CTAS lost table properties after conversion to data source tables. For
example,
```SQL
CREATE TABLE t TBLPROPERTIES('prop1' = 'c', 'prop2' = 'd') AS SELECT 1 as
a, 1 as b
```
The output of `DESC FORMATTED t` does not have the related properties.
```
|Table Parameters: |
| |
| rawDataSize |-1
| |
| numFiles |1
| |
| transient_lastDdlTime |1471670983
| |
| totalSize |496
| |
| spark.sql.sources.provider|parquet
| |
| EXTERNAL |FALSE
| |
| COLUMN_STATS_ACCURATE |false
| |
| numRows |-1
| |
| |
| |
|# Storage Information |
| |
|SerDe Library:
|org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe
| |
|InputFormat:
|org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormat
| |
|OutputFormat:
|org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat
| |
|Compressed: |No
| |
|Storage Desc Parameters: |
| |
| serialization.format |1
| |
| path
|file:/private/var/folders/4b/sgmfldk15js406vk7lw5llzw0000gn/T/warehouse-f3aa2927-6464-4a35-a715-1300dde6c614/t|
|
```
After the fix, the properties specified by users are stored as serde
properties, since the table properties are used for storing table schemas and
system generated properties.
```
|Table Parameters: |
| |
| rawDataSize |-1
| |
| numFiles |1
| |
| transient_lastDdlTime |1471672182
| |
| totalSize |496
| |
| spark.sql.sources.provider|parquet
| |
| EXTERNAL |FALSE
| |
| COLUMN_STATS_ACCURATE |false
| |
| numRows |-1
| |
| |
| |
|# Storage Information |
| |
|SerDe Library:
|org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe
| |
|InputFormat:
|org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormat
| |
|OutputFormat:
|org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat
| |
|Compressed: |No
| |
|Storage Desc Parameters: |
| |
| prop2 |d
| |
| prop1 |c
| |
| serialization.format |1
| |
| path
|file:/private/var/folders/4b/sgmfldk15js406vk7lw5llzw0000gn/T/warehouse-78c38cea-02c9-40aa-9b20-9803686069ae/t|
|
+----------------------------+--------------------------------------------------------------------------------------------------------------+-------+
```
## How was this patch tested?
Added a test case.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark tablePropertiesLoss
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14727.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 #14727
----
commit bffc412b4ce50ffc63da0f6b05d82f7dd52a97fd
Author: gatorsmile <gatorsm...@gmail.com>
Date: 2016-08-20T05:40:52Z
fix.
----
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