GitHub user tejasapatil opened a pull request:
https://github.com/apache/spark/pull/17780
[SPARK-20487][SQL] `HiveTableScan` node is quite verbose in explained plan
## What changes were proposed in this pull request?
Changed `TreeNode.argString` to handle `CatalogTable` separately (otherwise
it would call the default `toString` on the `CatalogTable`)
## How was this patch tested?
- Expanded scope of existing unit test to ensure that verbose information
is not present
- Manual testing
Before
```
scala> hc.sql(" SELECT * FROM my_table WHERE name = 'foo' ").explain(true)
== Parsed Logical Plan ==
'Project [*]
+- 'Filter ('name = foo)
+- 'UnresolvedRelation `my_table`
== Analyzed Logical Plan ==
user_id: bigint, name: string, ds: string
Project [user_id#13L, name#14, ds#15]
+- Filter (name#14 = foo)
+- SubqueryAlias my_table
+- CatalogRelation CatalogTable(
Database: default
Table: my_table
Owner: tejasp
Created: Fri Apr 14 17:05:50 PDT 2017
Last Access: Wed Dec 31 16:00:00 PST 1969
Type: MANAGED
Provider: hive
Properties: [serialization.format=1]
Statistics: 9223372036854775807 bytes
Location: file:/tmp/warehouse/my_table
Serde Library: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
InputFormat: org.apache.hadoop.mapred.TextInputFormat
OutputFormat: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
Partition Provider: Catalog
Partition Columns: [`ds`]
Schema: root
-- user_id: long (nullable = true)
-- name: string (nullable = true)
-- ds: string (nullable = true)
), [user_id#13L, name#14], [ds#15]
== Optimized Logical Plan ==
Filter (isnotnull(name#14) && (name#14 = foo))
+- CatalogRelation CatalogTable(
Database: default
Table: my_table
Owner: tejasp
Created: Fri Apr 14 17:05:50 PDT 2017
Last Access: Wed Dec 31 16:00:00 PST 1969
Type: MANAGED
Provider: hive
Properties: [serialization.format=1]
Statistics: 9223372036854775807 bytes
Location: file:/tmp/warehouse/my_table
Serde Library: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
InputFormat: org.apache.hadoop.mapred.TextInputFormat
OutputFormat: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
Partition Provider: Catalog
Partition Columns: [`ds`]
Schema: root
-- user_id: long (nullable = true)
-- name: string (nullable = true)
-- ds: string (nullable = true)
), [user_id#13L, name#14], [ds#15]
== Physical Plan ==
*Filter (isnotnull(name#14) && (name#14 = foo))
+- HiveTableScan [user_id#13L, name#14, ds#15], CatalogRelation
CatalogTable(
Database: default
Table: my_table
Owner: tejasp
Created: Fri Apr 14 17:05:50 PDT 2017
Last Access: Wed Dec 31 16:00:00 PST 1969
Type: MANAGED
Provider: hive
Properties: [serialization.format=1]
Statistics: 9223372036854775807 bytes
Location: file:/tmp/warehouse/my_table
Serde Library: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
InputFormat: org.apache.hadoop.mapred.TextInputFormat
OutputFormat: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
Partition Provider: Catalog
Partition Columns: [`ds`]
Schema: root
-- user_id: long (nullable = true)
-- name: string (nullable = true)
-- ds: string (nullable = true)
), [user_id#13L, name#14], [ds#15]
```
After
```
scala> hc.sql(" SELECT * FROM my_table WHERE name = 'foo' ").explain(true)
== Parsed Logical Plan ==
'Project [*]
+- 'Filter ('name = foo)
+- 'UnresolvedRelation `my_table`
== Analyzed Logical Plan ==
user_id: bigint, name: string, ds: string
Project [user_id#13L, name#14, ds#15]
+- Filter (name#14 = foo)
+- SubqueryAlias my_table
+- CatalogRelation `default`.`my_table`, [user_id#13L, name#14],
[ds#15]
== Optimized Logical Plan ==
Filter (isnotnull(name#14) && (name#14 = foo))
+- CatalogRelation `default`.`my_table`, [user_id#13L, name#14], [ds#15]
== Physical Plan ==
*Filter (isnotnull(name#14) && (name#14 = foo))
+- HiveTableScan [user_id#13L, name#14, ds#15], CatalogRelation
`default`.`my_table`, [user_id#13L, name#14], [ds#15]
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tejasapatil/spark SPARK-20487_verbose_plan
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17780.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 #17780
commit 768738c4503938dfb467f8cfd22ffe01bc098c07
Author: Tejas Patil
Date: 2017-04-27T03:03:56Z
[SPARK-20487][SQL] `HiveTableScan` node is quite verbose in ex
