Re: Re: table render string to long

[den...@udcredit.com]

Sounds great!



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HANGZHOU UDCREDIT NETWORK TECHNOLOGY CO., LTD.

部门:  数据应用技术部
姓名:  dengjunhua
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邮箱: den...@udcredit.com
 
From: Corneau Damien
Date: 2016-09-08 17:20
To: users
Subject: Re: table render string to long
Hi dengjh,

It seems to be an effect of a recent commit that try to detect 
Numbers.(https://github.com/apache/zeppelin/pull/1371)
I think this PR https://github.com/apache/zeppelin/pull/1363, would be able to 
fix this issue as it would allow users to specify the type by themselves.

However keep in mind that this behavior is only applied in the Table, and the 
value should be as a string in charts

On Thu, Sep 8, 2016 at 6:00 PM, den...@udcredit.com  wrote:
hi team,

I am a new user of zepplin. I used psql to get data from impala. I can get data 
successful, but the type of String was rendered to Long as below.
The event_time should be String, but now it's long. Is it a bug? If not, can 
you give me some advice?



杭州有盾网络科技有限公司
HANGZHOU UDCREDIT NETWORK TECHNOLOGY CO., LTD.

部门:  数据应用技术部
姓名:  dengjunhua
手机:  15158114898
邮箱: den...@udcredit.com

Re: table render string to long

[Corneau Damien]

Hi dengjh,

It seems to be an effect of a recent commit that try to detect Numbers.(
https://github.com/apache/zeppelin/pull/1371)
I think this PR https://github.com/apache/zeppelin/pull/1363, would be able
to fix this issue as it would allow users to specify the type by themselves.

However keep in mind that this behavior is only applied in the Table, and
the value should be as a string in charts

On Thu, Sep 8, 2016 at 6:00 PM, den...@udcredit.com 
wrote:

> hi team,
>
> I am a new user of zepplin. I used psql to get data from impala. I can get
> data successful, but the type of String was rendered to Long as below.
> The event_time should be String, but now it's long. Is it a bug? If not,
> can you give me some advice?
>
> --
> 杭州有盾网络科技有限公司
> *HANGZHOU UDCREDIT NETWORK TECHNOLOGY CO., LTD.*
>
> 部门:  数据应用技术部
> 姓名:  dengjunhua
> 手机:  15158114898
> 邮箱: den...@udcredit.com
>

table render string to long

[den...@udcredit.com]

hi team,

I am a new user of zepplin. I used psql to get data from impala. I can get data 
successful, but the type of String was rendered to Long as below.
The event_time should be String, but now it's long. Is it a bug? If not, can 
you give me some advice?



杭州有盾网络科技有限公司
HANGZHOU UDCREDIT NETWORK TECHNOLOGY CO., LTD.

部门:  数据应用技术部
姓名:  dengjunhua
手机:  15158114898
邮箱: den...@udcredit.com

Re: How to use web sockets with Zeppellin

[Corneau Damien]

There might actually be another way to do that using python or scala code.

I don't have experience in those, but I guess the overall idea behind it
would be to have this type of code in a paragraph that you run:


// Include python websocket library

// pythonWebsocketOpenConnection(myServerWithData)

// pythonWebsocketEventListener(event) {
//   transform data to be in the format "product\tprice\nbanana\t12\
napple\t8"
//   print("%table " + event.data )
//}

This example is for the result of a single paragraph (the one with the
code),
However if you receive result for multiple graphs in that hook, you could
probably prepare other paragraphs with something like:

//  print("%table " + graphData1 )

and change the original hook in previous example to do
// pythonWebsocketEventListener(event) {
//   graphData1 = event.data.graph1 (transformed in the format
"product\tprice\nbanana\t12\napple\t8")
//   z.runParagraph(paragrpahID) (The one with the graphData1, the ID is in
the paragraph dropdown settings)
//   etc...
//}




On Thu, Sep 8, 2016 at 5:31 PM, Corneau Damien  wrote:

> To reply to 1)
>
> The type of  charts and its options are set in the UI, and saved as
> settings in the note.
> So the queries do not have any effect on it.
>
> The front-end receive data as a result of a query.
>
> for example:
>
> You can type
>
> ```
> %sql
> select * from bank
> ```
>
> And the front-end will receive a table like result in the form of:
>
> "product\tprice\nbanana\t12\napple\t8"
>
> It will first show it as a Table, but the UI allows you to change the
> visualization type.
>
>
> To reply to 2)
>
> I don't have any knowledge of a websocket interpreter.
>
> However like I explained before in the Zeppelin workflow,
> Zeppelin Server send a Query through an interpreter to whatever type of
> backend, and gets a result back.
> It then send back that result to the UI.
>
> A Spark interpreter is used to query Spark,
> A JDBC interpreter is used to query SQL server
> and so on...
> (We even have a shell interpreter)
>
> If you are using something custom outside of the existing data
> processing/data store technology we have,
> and you want to make Zeppelin communicate with it to render data, you will
> need to create a custom interpreter.
>
> On Thu, Sep 8, 2016 at 4:20 PM, kant kodali  wrote:
>
>> @Corneau The links you have pointed out doesnt show how I can retrieve
>> messages through websocket and tie to chars. I would stress again and say
>> how do i tie all this up to charts?
>>
>> On Thu, Sep 8, 2016 at 12:17 AM, kant kodali  wrote:
>>
>>> Hi Corneau,
>>>
>>> I appreciate the responses but again I am really looking for a specific
>>> answer
>>>
>>> 1. "This protocol looks interesting but how do I construct messages
>>> such that I can see different visualizations of charts?" This question
>>> is not being addressed.
>>>
>>> 2. How can I use an existing interpreter and achieve my goal otherwords
>>> again how can I tie all this thing to charts (I just haven't heard any
>>> answer related to that)? If I were to write my own interpreter then I might
>>> as well create my own UI.
>>>
>>> It is ok if you guys say it is not possible and I would understand that
>>> and probably pick a different route.
>>>
>>> Thanks much,
>>> Kant
>>>
>>>
>>> On Thu, Sep 8, 2016 at 12:10 AM, Corneau Damien 
>>> wrote:
>>>
 You will probably need to make an interpreter for it, or use an
 existing one.

 https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/manual/inter
 preters.html

 You will find the list of existing interpreters in the menu.

 If you do need to create one, then you can refer to this guide
 https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/development/
 writingzeppelininterpreter.html

 On Thu, Sep 8, 2016 at 3:56 PM, kant kodali  wrote:

> @spacewalkman Just an FYI I don't have anything to do with Spark at
> the moment. I just have a node.js server which is capable of websocket
> connections and ready to push data needed for charts.
>
> This protocol looks interesting but how do I construct messages such
> that I can see different visualizations of charts? I am pretty sure I have
> articulated my question clearly it will great if I can see a bit
> detailed description or a simple example.
>
> I believe that I am asking for a very simple feature.
>
> Thanks a ton,
> Kant
>
> On Wed, Sep 7, 2016 at 8:52 PM, spacewalk...@163.com <
> spacewalk...@163.com> wrote:
>
>> maybe a custom SparkStreamingInterpreter  can handle this.
>>
>> zeppelin WS protocol is defined in:
>>
>>
>>1. https://github.com/apache/zeppelin/blob/master/zeppelin-zeng
>>ine/src/main/java/org/apache/zeppelin/notebook/socket/Message.java
>>
>> 
>>
>>
>> eve

Re: How to use web sockets with Zeppellin

[Corneau Damien]

To reply to 1)

The type of  charts and its options are set in the UI, and saved as
settings in the note.
So the queries do not have any effect on it.

The front-end receive data as a result of a query.

for example:

You can type

```
%sql
select * from bank
```

And the front-end will receive a table like result in the form of:

"product\tprice\nbanana\t12\napple\t8"

It will first show it as a Table, but the UI allows you to change the
visualization type.


To reply to 2)

I don't have any knowledge of a websocket interpreter.

However like I explained before in the Zeppelin workflow,
Zeppelin Server send a Query through an interpreter to whatever type of
backend, and gets a result back.
It then send back that result to the UI.

A Spark interpreter is used to query Spark,
A JDBC interpreter is used to query SQL server
and so on...
(We even have a shell interpreter)

If you are using something custom outside of the existing data
processing/data store technology we have,
and you want to make Zeppelin communicate with it to render data, you will
need to create a custom interpreter.

On Thu, Sep 8, 2016 at 4:20 PM, kant kodali  wrote:

> @Corneau The links you have pointed out doesnt show how I can retrieve
> messages through websocket and tie to chars. I would stress again and say
> how do i tie all this up to charts?
>
> On Thu, Sep 8, 2016 at 12:17 AM, kant kodali  wrote:
>
>> Hi Corneau,
>>
>> I appreciate the responses but again I am really looking for a specific
>> answer
>>
>> 1. "This protocol looks interesting but how do I construct messages such
>> that I can see different visualizations of charts?" This question is not
>> being addressed.
>>
>> 2. How can I use an existing interpreter and achieve my goal otherwords
>> again how can I tie all this thing to charts (I just haven't heard any
>> answer related to that)? If I were to write my own interpreter then I might
>> as well create my own UI.
>>
>> It is ok if you guys say it is not possible and I would understand that
>> and probably pick a different route.
>>
>> Thanks much,
>> Kant
>>
>>
>> On Thu, Sep 8, 2016 at 12:10 AM, Corneau Damien 
>> wrote:
>>
>>> You will probably need to make an interpreter for it, or use an existing
>>> one.
>>>
>>> https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/manual/interpreters.html
>>>
>>> You will find the list of existing interpreters in the menu.
>>>
>>> If you do need to create one, then you can refer to this guide
>>> https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/development/
>>> writingzeppelininterpreter.html
>>>
>>> On Thu, Sep 8, 2016 at 3:56 PM, kant kodali  wrote:
>>>
 @spacewalkman Just an FYI I don't have anything to do with Spark at
 the moment. I just have a node.js server which is capable of websocket
 connections and ready to push data needed for charts.

 This protocol looks interesting but how do I construct messages such
 that I can see different visualizations of charts? I am pretty sure I have
 articulated my question clearly it will great if I can see a bit
 detailed description or a simple example.

 I believe that I am asking for a very simple feature.

 Thanks a ton,
 Kant

 On Wed, Sep 7, 2016 at 8:52 PM, spacewalk...@163.com <
 spacewalk...@163.com> wrote:

> maybe a custom SparkStreamingInterpreter  can handle this.
>
> zeppelin WS protocol is defined in:
>
>
>1. https://github.com/apache/zeppelin/blob/master/zeppelin-zeng
>ine/src/main/java/org/apache/zeppelin/notebook/socket/Message.java
>
> 
>
>
> every [c-s] message is handled by zeppelin backend, [s-c] is handled
> by zeppelin frontend.All you have to do is when new streaming data is
> there, triigger a [s-c] message from backend, a frontend event handler may
> also required.
>
>
> 在 2016年9月8日，11:39，kant kodali  写道：
>
> ok here is a concrete example. I am still trying to connect the
> dots..If I were to split Zeppelin as both front end and backend then I
> wouldn't choose to use Zeppelin in the first place. The main motivation 
> for
> me to explore Zeppelin is that I don't have to spend time developing
> different visualiztions. I have used tableau before I see Zeppelin to be
> similar in some ways. ok now here is the problem I am trying to solve and
> any help I can get will be great!
>
> say I am trying to build a time series graph(bar graph or whatever
> works) where my x axis represent time and y axis represent total number of
> transactions and say every second I get updates through web socket from my
> server and I need the graph to be updated every second. thats it.
>
> please let me know if that is feasible.
>
> Thanks,
> Kant
>
> On Wed, Sep 7, 2016 at 6:59

Re: Spark DataFrame Plotting

[patcharee]

Hi Moon,

When I generate an extra column (schema will be Index:Int, A:Double, 
B:Double), what sql command to generate a graph with 2 lines (Index as a 
X-axis, BOTH A and B as Y-axis)? Do I need to group by?


Thanks!

Patcharee


On 07. sep. 2016 16:58, moon soo Lee wrote:
You will need to generate extra column which can be used as a X-axis 
for column A and B.


On Wed, Sep 7, 2016 at 2:34 AM Abhisar Mohapatra 
mailto:abhisar.mohapa...@inmobi.com>> 
wrote:


I am not sure ,But can you try once by grouby function in
zeppelin.If uou can group by columns then i guess that would do
the trick or pass the data to another HTML block and use d3
comparison chart to plot it

On Wed, Sep 7, 2016 at 2:56 PM, patcharee
mailto:patcharee.thong...@uni.no>> wrote:

Normal select * gives me one column on X-axis and another on
Y-axis. I cannot make both A:Double, B:Double displayed on
Y-axis. How to do that?

Patcharee


On 07. sep. 2016 11:05, Abhisar Mohapatra wrote:

You can do a normal select * on the dataframe and it would be
automatically interpreted.

On Wed, Sep 7, 2016 at 2:29 PM, patcharee
mailto:patcharee.thong...@uni.no>> wrote:

Hi,

I have a dataframe with this schema A:Double, B:Double.
How can I plot this dataframe as two lines (comparing A
and B at each step)?

Best,

Patcharee



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Re: How to use web sockets with Zeppellin

[kant kodali]

@Corneau The links you have pointed out doesnt show how I can retrieve
messages through websocket and tie to chars. I would stress again and say
how do i tie all this up to charts?

On Thu, Sep 8, 2016 at 12:17 AM, kant kodali  wrote:

> Hi Corneau,
>
> I appreciate the responses but again I am really looking for a specific
> answer
>
> 1. "This protocol looks interesting but how do I construct messages such
> that I can see different visualizations of charts?" This question is not
> being addressed.
>
> 2. How can I use an existing interpreter and achieve my goal otherwords
> again how can I tie all this thing to charts (I just haven't heard any
> answer related to that)? If I were to write my own interpreter then I might
> as well create my own UI.
>
> It is ok if you guys say it is not possible and I would understand that
> and probably pick a different route.
>
> Thanks much,
> Kant
>
>
> On Thu, Sep 8, 2016 at 12:10 AM, Corneau Damien 
> wrote:
>
>> You will probably need to make an interpreter for it, or use an existing
>> one.
>>
>> https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/manual/interpreters.html
>>
>> You will find the list of existing interpreters in the menu.
>>
>> If you do need to create one, then you can refer to this guide
>> https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/development/
>> writingzeppelininterpreter.html
>>
>> On Thu, Sep 8, 2016 at 3:56 PM, kant kodali  wrote:
>>
>>> @spacewalkman Just an FYI I don't have anything to do with Spark at the
>>> moment. I just have a node.js server which is capable of websocket
>>> connections and ready to push data needed for charts.
>>>
>>> This protocol looks interesting but how do I construct messages such
>>> that I can see different visualizations of charts? I am pretty sure I have
>>> articulated my question clearly it will great if I can see a bit
>>> detailed description or a simple example.
>>>
>>> I believe that I am asking for a very simple feature.
>>>
>>> Thanks a ton,
>>> Kant
>>>
>>> On Wed, Sep 7, 2016 at 8:52 PM, spacewalk...@163.com <
>>> spacewalk...@163.com> wrote:
>>>
 maybe a custom SparkStreamingInterpreter  can handle this.

 zeppelin WS protocol is defined in:


1. https://github.com/apache/zeppelin/blob/master/zeppelin-zeng
ine/src/main/java/org/apache/zeppelin/notebook/socket/Message.java

 


 every [c-s] message is handled by zeppelin backend, [s-c] is handled by
 zeppelin frontend.All you have to do is when new streaming data is there,
 triigger a [s-c] message from backend, a frontend event handler may also
 required.


 在 2016年9月8日，11:39，kant kodali  写道：

 ok here is a concrete example. I am still trying to connect the
 dots..If I were to split Zeppelin as both front end and backend then I
 wouldn't choose to use Zeppelin in the first place. The main motivation for
 me to explore Zeppelin is that I don't have to spend time developing
 different visualiztions. I have used tableau before I see Zeppelin to be
 similar in some ways. ok now here is the problem I am trying to solve and
 any help I can get will be great!

 say I am trying to build a time series graph(bar graph or whatever
 works) where my x axis represent time and y axis represent total number of
 transactions and say every second I get updates through web socket from my
 server and I need the graph to be updated every second. thats it.

 please let me know if that is feasible.

 Thanks,
 Kant

 On Wed, Sep 7, 2016 at 6:59 PM, spacewalk...@163.com <
 spacewalk...@163.com> wrote:

> i thought it was a separating zeppelin backend and frontend problem,
> but what @corneadoug say is a high-level WS description, maybe i
> misinterpretation @kant kodali’s issue
>
>
> 在 2016年9月8日，09:48，Corneau Damien  写道：
>
> This change wouldn't solve your issue, it is the address where the
> front-end send his API requests and listen to WS (zeppelin server)
> I guess your requirements are different.
>
> The way Zeppelin works is usually pretty simple:
>
> 1) You type your code in the front-end
> 2) That code is sent to Zeppelin server to be run
> 3) The server send it to the right processing engine
> 4) Processing engine send back the result
> 5) Zeppelin Server send a websocket event
> 6) Front-end show whatever he receives
>
> You might be able to find a few Notebook examples on how some people
> used Spark Streaming here:
> https://www.zeppelinhub.com/viewer/showcases/Streaming
>
> On Thu, Sep 8, 2016 at 3:30 AM, kant kodali 
> wrote:
>
>> Hi! Thanks for this but I still see the big picture. I have not used
>> Angular before nor I am a frontend guy. so I ha

Re: How to use web sockets with Zeppellin

[kant kodali]

Hi Corneau,

I appreciate the responses but again I am really looking for a specific
answer

1. "This protocol looks interesting but how do I construct messages such
that I can see different visualizations of charts?" This question is not
being addressed.

2. How can I use an existing interpreter and achieve my goal otherwords
again how can I tie all this thing to charts (I just haven't heard any
answer related to that)? If I were to write my own interpreter then I might
as well create my own UI.

It is ok if you guys say it is not possible and I would understand that and
probably pick a different route.

Thanks much,
Kant


On Thu, Sep 8, 2016 at 12:10 AM, Corneau Damien 
wrote:

> You will probably need to make an interpreter for it, or use an existing
> one.
>
> https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/manual/interpreters.html
>
> You will find the list of existing interpreters in the menu.
>
> If you do need to create one, then you can refer to this guide
> https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/development/
> writingzeppelininterpreter.html
>
> On Thu, Sep 8, 2016 at 3:56 PM, kant kodali  wrote:
>
>> @spacewalkman Just an FYI I don't have anything to do with Spark at the
>> moment. I just have a node.js server which is capable of websocket
>> connections and ready to push data needed for charts.
>>
>> This protocol looks interesting but how do I construct messages such that
>> I can see different visualizations of charts? I am pretty sure I have
>> articulated my question clearly it will great if I can see a bit
>> detailed description or a simple example.
>>
>> I believe that I am asking for a very simple feature.
>>
>> Thanks a ton,
>> Kant
>>
>> On Wed, Sep 7, 2016 at 8:52 PM, spacewalk...@163.com <
>> spacewalk...@163.com> wrote:
>>
>>> maybe a custom SparkStreamingInterpreter  can handle this.
>>>
>>> zeppelin WS protocol is defined in:
>>>
>>>
>>>1. https://github.com/apache/zeppelin/blob/master/zeppelin-zeng
>>>ine/src/main/java/org/apache/zeppelin/notebook/socket/Message.java
>>>
>>> 
>>>
>>>
>>> every [c-s] message is handled by zeppelin backend, [s-c] is handled by
>>> zeppelin frontend.All you have to do is when new streaming data is there,
>>> triigger a [s-c] message from backend, a frontend event handler may also
>>> required.
>>>
>>>
>>> 在 2016年9月8日，11:39，kant kodali  写道：
>>>
>>> ok here is a concrete example. I am still trying to connect the dots..If
>>> I were to split Zeppelin as both front end and backend then I wouldn't
>>> choose to use Zeppelin in the first place. The main motivation for me to
>>> explore Zeppelin is that I don't have to spend time developing different
>>> visualiztions. I have used tableau before I see Zeppelin to be similar in
>>> some ways. ok now here is the problem I am trying to solve and any help I
>>> can get will be great!
>>>
>>> say I am trying to build a time series graph(bar graph or whatever
>>> works) where my x axis represent time and y axis represent total number of
>>> transactions and say every second I get updates through web socket from my
>>> server and I need the graph to be updated every second. thats it.
>>>
>>> please let me know if that is feasible.
>>>
>>> Thanks,
>>> Kant
>>>
>>> On Wed, Sep 7, 2016 at 6:59 PM, spacewalk...@163.com <
>>> spacewalk...@163.com> wrote:
>>>
 i thought it was a separating zeppelin backend and frontend problem,
 but what @corneadoug say is a high-level WS description, maybe i
 misinterpretation @kant kodali’s issue


 在 2016年9月8日，09:48，Corneau Damien  写道：

 This change wouldn't solve your issue, it is the address where the
 front-end send his API requests and listen to WS (zeppelin server)
 I guess your requirements are different.

 The way Zeppelin works is usually pretty simple:

 1) You type your code in the front-end
 2) That code is sent to Zeppelin server to be run
 3) The server send it to the right processing engine
 4) Processing engine send back the result
 5) Zeppelin Server send a websocket event
 6) Front-end show whatever he receives

 You might be able to find a few Notebook examples on how some people
 used Spark Streaming here:
 https://www.zeppelinhub.com/viewer/showcases/Streaming

 On Thu, Sep 8, 2016 at 3:30 AM, kant kodali  wrote:

> Hi! Thanks for this but I still see the big picture. I have not used
> Angular before nor I am a frontend guy. so I have the following questions.
>
>
>1. Why do we need to change the source code? isn't this
>configurable or isn't there a way to pass url as a parameter? If you 
> think
>it is the easiest way sure I can change that.
>2. How change this let me grab data from my websocket server and
>display it with the charts/graphs (simple to g

Re: How to use web sockets with Zeppellin

[Corneau Damien]

You will probably need to make an interpreter for it, or use an existing
one.

https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/manual/interpreters.html

You will find the list of existing interpreters in the menu.

If you do need to create one, then you can refer to this guide
https://zeppelin.apache.org/docs/0.7.0-SNAPSHOT/development/writingzeppelininterpreter.html

On Thu, Sep 8, 2016 at 3:56 PM, kant kodali  wrote:

> @spacewalkman Just an FYI I don't have anything to do with Spark at the
> moment. I just have a node.js server which is capable of websocket
> connections and ready to push data needed for charts.
>
> This protocol looks interesting but how do I construct messages such that
> I can see different visualizations of charts? I am pretty sure I have
> articulated my question clearly it will great if I can see a bit
> detailed description or a simple example.
>
> I believe that I am asking for a very simple feature.
>
> Thanks a ton,
> Kant
>
> On Wed, Sep 7, 2016 at 8:52 PM, spacewalk...@163.com  > wrote:
>
>> maybe a custom SparkStreamingInterpreter  can handle this.
>>
>> zeppelin WS protocol is defined in:
>>
>>
>>1. https://github.com/apache/zeppelin/blob/master/zeppelin-zeng
>>ine/src/main/java/org/apache/zeppelin/notebook/socket/Message.java
>>
>> 
>>
>>
>> every [c-s] message is handled by zeppelin backend, [s-c] is handled by
>> zeppelin frontend.All you have to do is when new streaming data is there,
>> triigger a [s-c] message from backend, a frontend event handler may also
>> required.
>>
>>
>> 在 2016年9月8日，11:39，kant kodali  写道：
>>
>> ok here is a concrete example. I am still trying to connect the dots..If
>> I were to split Zeppelin as both front end and backend then I wouldn't
>> choose to use Zeppelin in the first place. The main motivation for me to
>> explore Zeppelin is that I don't have to spend time developing different
>> visualiztions. I have used tableau before I see Zeppelin to be similar in
>> some ways. ok now here is the problem I am trying to solve and any help I
>> can get will be great!
>>
>> say I am trying to build a time series graph(bar graph or whatever works)
>> where my x axis represent time and y axis represent total number of
>> transactions and say every second I get updates through web socket from my
>> server and I need the graph to be updated every second. thats it.
>>
>> please let me know if that is feasible.
>>
>> Thanks,
>> Kant
>>
>> On Wed, Sep 7, 2016 at 6:59 PM, spacewalk...@163.com <
>> spacewalk...@163.com> wrote:
>>
>>> i thought it was a separating zeppelin backend and frontend problem, but
>>> what @corneadoug say is a high-level WS description, maybe i
>>> misinterpretation @kant kodali’s issue
>>>
>>>
>>> 在 2016年9月8日，09:48，Corneau Damien  写道：
>>>
>>> This change wouldn't solve your issue, it is the address where the
>>> front-end send his API requests and listen to WS (zeppelin server)
>>> I guess your requirements are different.
>>>
>>> The way Zeppelin works is usually pretty simple:
>>>
>>> 1) You type your code in the front-end
>>> 2) That code is sent to Zeppelin server to be run
>>> 3) The server send it to the right processing engine
>>> 4) Processing engine send back the result
>>> 5) Zeppelin Server send a websocket event
>>> 6) Front-end show whatever he receives
>>>
>>> You might be able to find a few Notebook examples on how some people
>>> used Spark Streaming here:
>>> https://www.zeppelinhub.com/viewer/showcases/Streaming
>>>
>>> On Thu, Sep 8, 2016 at 3:30 AM, kant kodali  wrote:
>>>
 Hi! Thanks for this but I still see the big picture. I have not used
 Angular before nor I am a frontend guy. so I have the following questions.


1. Why do we need to change the source code? isn't this
configurable or isn't there a way to pass url as a parameter? If you 
 think
it is the easiest way sure I can change that.
2. How change this let me grab data from my websocket server and
display it with the charts/graphs (simple to graphs we see when we run 
 sql
on Zeppelin notebook)
3. if there is a simple example that would be awesome.

 Thanks again!



 On Wed, Sep 7, 2016 5:05 AM, spacewalk...@163.com spacewalk...@163.com
 wrote:

> @kant kodali
>
> change   zeppelin-web\ src\components\baseUrl\baseUrl.service.js like
> this:
>
>  this.getWebsocketUrl = function() {
> var wsProtocol = location.protocol === 'https:' ? 'wss:' : 'ws:';
> return wsProtocol + ‘//your_ip_address:' + this.getPort() +
> skipTrailingSlash(location.pathname) + '/ws';
>   };
>
>   this.getRestApiBase = function() {
> return location.protocol + '//your_ip_address:' + this.getPort()
> + skipTrailingSlash(location.pathname) +
>   '/api';
>