[
https://issues.apache.org/jira/browse/TOREE-460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Luciano Resende resolved TOREE-460.
-----------------------------------
Resolution: Cannot Reproduce
Assignee: Luciano Resende
Fix Version/s: 0.2.0
I have tried Toree master with both Spark 2.1.0 and 2.2.0 and both have the
same behavior where:
```
val a="abc"
```
will produce
```
a = abc
Out[5]: abc
```
> Difference in output between Spark 2.1.0 and Spark 2.1.2+
> ---------------------------------------------------------
>
> Key: TOREE-460
> URL: https://issues.apache.org/jira/browse/TOREE-460
> Project: TOREE
> Issue Type: Bug
> Components: Kernel
> Affects Versions: 0.2.0
> Reporter: Vinayak Joshi
> Assignee: Luciano Resende
> Fix For: 0.2.0
>
>
> Using the current version of Toree (0.2.0) & Scala 2.11 when Scala code such
> as this is executed:
> ```
> var v = "abc"
> ```
> against Spark 2.1.0, there is no output generated on the notebook. However,
> against Spark 2.1.2 and above, the notebook displays the following lines as
> output for the same code:
> ```
> v = abc
> Out[2]: abc
> ```
> When used via a kernel-gateway, I could trace the websocket messages and
> observed that a couple of extra messages are received by the notebook when
> the code is executed against Spark 2.1.2+ :
> ```
> {
> "parent_header": {
> ...
> },
> "msg_type": "display_data",
> "msg_id": "7ee0fe40-3283-45dc-8632-a9f013ae7052",
> "content": {
> "source": "user",
> "data": {
> "text/plain": "v = abc"
> },
> "metadata": {}
> },
> "header": {
> ...
> },
> "channel": "iopub",
> "buffers": [],
> "metadata": {
> "timestamp": "1513154854626"
> }
> }
> ```
> and
> ```
> {
> "parent_header": {
> ...
> },
> "msg_type": "execute_result",
> "msg_id": "98dae777-c5cf-4ae7-9903-306e1fdf7bc1",
> "content": {
> "execution_count": 2,
> "data": {
> "text/plain": "abc"
> },
> "metadata": {}
> },
> "header": {
> ...
> },
> "channel": "iopub",
> "buffers": [],
> "metadata": {
> "timestamp": "1513154854754"
> }
> }
> ```
> These messages appear to be getting rendered on the notebook ui.
> This is breaking consistency/compatibility for expected outputs when Spark
> version changes for notebooks. Also there are users that use some kind of
> code cell hiding to prevent credentials etc being displayed in a notebook -
> this use case now breaks since the cell output now displays any credential
> values that are assigned to variables.
> So looks like something's changed between Spark 2.1.0 and later versions that
> causes Toree to produce different replies to the same code being executed? Is
> it something Toree needs to adapt to?
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