GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/10215
[SPARK-12164] [SQL] Decode the encoded values and then display
Based on the suggestions from @marmbrus @cloud-fan in
https://github.com/apache/spark/pull/10165 , this PR is to print the decoded
values(user objects) in `Dataset.show`
```
implicit val kryoEncoder = Encoders.kryo[KryoClassData]
val ds = Seq(KryoClassData("a", 1), KryoClassData("b", 2),
KryoClassData("c", 3)).toDS()
ds.show(20, false);
```
The current output is like
```
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|value
|
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|[1, 0, 111, 114, 103, 46, 97, 112, 97, 99, 104, 101, 46, 115, 112, 97,
114, 107, 46, 115, 113, 108, 46, 75, 114, 121, 111, 67, 108, 97, 115, 115, 68,
97, 116, -31, 1, 1, -126, 97, 2]|
|[1, 0, 111, 114, 103, 46, 97, 112, 97, 99, 104, 101, 46, 115, 112, 97,
114, 107, 46, 115, 113, 108, 46, 75, 114, 121, 111, 67, 108, 97, 115, 115, 68,
97, 116, -31, 1, 1, -126, 98, 4]|
|[1, 0, 111, 114, 103, 46, 97, 112, 97, 99, 104, 101, 46, 115, 112, 97,
114, 107, 46, 115, 113, 108, 46, 75, 114, 121, 111, 67, 108, 97, 115, 115, 68,
97, 116, -31, 1, 1, -126, 99, 6]|
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
```
After the fix, it will be like the below
```
+-------------------+
|value |
+-------------------+
|KryoClassData(a, 1)|
|KryoClassData(b, 2)|
|KryoClassData(c, 3)|
+-------------------+
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark showDecodedValue
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10215.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 #10215
----
commit 1e1ad1970a8bf3d9076165074f18ee7f28ab4acd
Author: gatorsmile <[email protected]>
Date: 2015-12-09T04:08:17Z
show decoded values.
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