[SPARK-26990][SQL][BACKPORT-2.4] FileIndex: use user specified field names if possible #23909
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WIth the following file structure:
```
/tmp/data
└── a=5
```
In the previous release:
```
scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema
root
|-- ID: long (nullable = true)
|-- A: integer (nullable = true)
```
While in current code:
```
scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema
root
|-- ID: long (nullable = true)
|-- a: integer (nullable = true)
```
We can see that the partition column name `a` is different from `A` as user specifed. This PR is to fix the case and make it more user-friendly.
Unit test
Closes apache#23894 from gengliangwang/fileIndexSchema.
Authored-by: Gengliang Wang <[email protected]>
Signed-off-by: Wenchen Fan <[email protected]>
|
Test build #102830 has finished for PR 23909 at commit
|
Contributor
|
ah sorry I thought it's a bug only in master, thanks for doing it! |
Contributor
|
merging to 2.4! |
cloud-fan
pushed a commit
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Feb 28, 2019
…names if possible ## What changes were proposed in this pull request? Back-port of #23894 to branch-2.4. WIth the following file structure: ``` /tmp/data └── a=5 ``` In the previous release: ``` scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema root |-- ID: long (nullable = true) |-- A: integer (nullable = true) ``` While in current code: ``` scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema root |-- ID: long (nullable = true) |-- a: integer (nullable = true) ``` We can see that the partition column name `a` is different from `A` as user specifed. This PR is to fix the case and make it more user-friendly. Closes #23894 from gengliangwang/fileIndexSchema. Authored-by: Gengliang Wang <gengliang.wangdatabricks.com> Signed-off-by: Wenchen Fan <wenchendatabricks.com> ## How was this patch tested? Unit test Closes #23909 from bersprockets/backport-SPARK-26990. Authored-by: Gengliang Wang <[email protected]> Signed-off-by: Wenchen Fan <[email protected]>
kai-chi
pushed a commit
to kai-chi/spark
that referenced
this pull request
Jul 23, 2019
…names if possible ## What changes were proposed in this pull request? Back-port of apache#23894 to branch-2.4. WIth the following file structure: ``` /tmp/data └── a=5 ``` In the previous release: ``` scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema root |-- ID: long (nullable = true) |-- A: integer (nullable = true) ``` While in current code: ``` scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema root |-- ID: long (nullable = true) |-- a: integer (nullable = true) ``` We can see that the partition column name `a` is different from `A` as user specifed. This PR is to fix the case and make it more user-friendly. Closes apache#23894 from gengliangwang/fileIndexSchema. Authored-by: Gengliang Wang <gengliang.wangdatabricks.com> Signed-off-by: Wenchen Fan <wenchendatabricks.com> ## How was this patch tested? Unit test Closes apache#23909 from bersprockets/backport-SPARK-26990. Authored-by: Gengliang Wang <[email protected]> Signed-off-by: Wenchen Fan <[email protected]>
kai-chi
pushed a commit
to kai-chi/spark
that referenced
this pull request
Jul 25, 2019
…names if possible ## What changes were proposed in this pull request? Back-port of apache#23894 to branch-2.4. WIth the following file structure: ``` /tmp/data └── a=5 ``` In the previous release: ``` scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema root |-- ID: long (nullable = true) |-- A: integer (nullable = true) ``` While in current code: ``` scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema root |-- ID: long (nullable = true) |-- a: integer (nullable = true) ``` We can see that the partition column name `a` is different from `A` as user specifed. This PR is to fix the case and make it more user-friendly. Closes apache#23894 from gengliangwang/fileIndexSchema. Authored-by: Gengliang Wang <gengliang.wangdatabricks.com> Signed-off-by: Wenchen Fan <wenchendatabricks.com> ## How was this patch tested? Unit test Closes apache#23909 from bersprockets/backport-SPARK-26990. Authored-by: Gengliang Wang <[email protected]> Signed-off-by: Wenchen Fan <[email protected]>
kai-chi
pushed a commit
to kai-chi/spark
that referenced
this pull request
Aug 1, 2019
…names if possible ## What changes were proposed in this pull request? Back-port of apache#23894 to branch-2.4. WIth the following file structure: ``` /tmp/data └── a=5 ``` In the previous release: ``` scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema root |-- ID: long (nullable = true) |-- A: integer (nullable = true) ``` While in current code: ``` scala> spark.read.schema("A int, ID long").parquet("/tmp/data/").printSchema root |-- ID: long (nullable = true) |-- a: integer (nullable = true) ``` We can see that the partition column name `a` is different from `A` as user specifed. This PR is to fix the case and make it more user-friendly. Closes apache#23894 from gengliangwang/fileIndexSchema. Authored-by: Gengliang Wang <gengliang.wangdatabricks.com> Signed-off-by: Wenchen Fan <wenchendatabricks.com> ## How was this patch tested? Unit test Closes apache#23909 from bersprockets/backport-SPARK-26990. Authored-by: Gengliang Wang <[email protected]> Signed-off-by: Wenchen Fan <[email protected]>
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What changes were proposed in this pull request?
Back-port of #23894 to branch-2.4.
WIth the following file structure:
In the previous release:
While in current code:
We can see that the partition column name
ais different fromAas user specifed. This PR is to fix the case and make it more user-friendly.Closes #23894 from gengliangwang/fileIndexSchema.
Authored-by: Gengliang Wang [email protected]
Signed-off-by: Wenchen Fan [email protected]
How was this patch tested?
Unit test