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| author | Dongjoon Hyun <dongjoon@apache.org> | 2017-01-23 01:21:44 -0800 |
|---|---|---|
| committer | gatorsmile <gatorsmile@gmail.com> | 2017-01-23 01:21:44 -0800 |
| commit | c4a6519c44f29950ef3d706a4f79e006ec8bc6b5 (patch) | |
| tree | 3c4e0f91fef01902d2e7265eb5f27104d93e92f4 /docs/configuration.md | |
| parent | f067acefabebf04939d03a639a2aaa654e1bc8f9 (diff) | |
| download | spark-c4a6519c44f29950ef3d706a4f79e006ec8bc6b5.tar.gz spark-c4a6519c44f29950ef3d706a4f79e006ec8bc6b5.tar.bz2 spark-c4a6519c44f29950ef3d706a4f79e006ec8bc6b5.zip | |
[SPARK-19218][SQL] Fix SET command to show a result correctly and in a sorted order
## What changes were proposed in this pull request?
This PR aims to fix the following two things.
1. `sql("SET -v").collect()` or `sql("SET -v").show()` raises the following exceptions for String configuration with default value, `null`. For the test, please see [Jenkins result](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/71539/testReport/) and https://github.com/apache/spark/commit/60953bf1f1ba144e709fdae3903a390ff9479fd0 in #16624 .
```
sbt.ForkMain$ForkError: java.lang.RuntimeException: Error while decoding: java.lang.NullPointerException
createexternalrow(input[0, string, false].toString, input[1, string, false].toString, input[2, string, false].toString, StructField(key,StringType,false), StructField(value,StringType,false), StructField(meaning,StringType,false))
:- input[0, string, false].toString
: +- input[0, string, false]
:- input[1, string, false].toString
: +- input[1, string, false]
+- input[2, string, false].toString
+- input[2, string, false]
```
2. Currently, `SET` and `SET -v` commands show unsorted result.
We had better show a sorted result for UX. Also, this is compatible with Hive.
**BEFORE**
```
scala> sql("set").show(false)
...
|spark.driver.host |10.22.16.140 |
|spark.driver.port |63893 |
|spark.repl.class.uri |spark://10.22.16.140:63893/classes |
...
|spark.app.name |Spark shell |
|spark.driver.memory |4G |
|spark.executor.id |driver |
|spark.submit.deployMode |client |
|spark.master |local[*] |
|spark.home |/Users/dhyun/spark |
|spark.sql.catalogImplementation|hive |
|spark.app.id |local-1484333618945 |
```
**AFTER**
```
scala> sql("set").show(false)
...
|spark.app.id |local-1484333925649 |
|spark.app.name |Spark shell |
|spark.driver.host |10.22.16.140 |
|spark.driver.memory |4G |
|spark.driver.port |64994 |
|spark.executor.id |driver |
|spark.jars | |
|spark.master |local[*] |
|spark.repl.class.uri |spark://10.22.16.140:64994/classes |
|spark.sql.catalogImplementation|hive |
|spark.submit.deployMode |client |
```
## How was this patch tested?
Jenkins with a new test case.
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes #16579 from dongjoon-hyun/SPARK-19218.
Diffstat (limited to 'docs/configuration.md')
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