Thank you for the response. The issue is caused by rest API use comma , as 
separator which breaks the code. Also, single quote is somehow removed by rest 
call process.

Sent from my iPhone

> On Jul 12, 2018, at 01:05, Gary Yao <> wrote:
> Hi Will,
> Is the HTTP request hanging, or is the Web UI not able to handle the error? 
> You
> can inspect the HTTP requests and responses using your browser's developer 
> tools
> [1]. When submitting a job, the Web UI issues a POST request to
> /jars/<jarid>/run. Also jobmanager.log might give some hints.
> Best,
> Gary
> [1]
>> On Wed, Jul 11, 2018 at 5:39 PM, Will Du <> wrote:
>> Hi folks,
>> I have program working in FLink 1.3 and tested working in v1.5.0 command 
>> line too. However, it has no response in web UI or rest API.
>> The rest call to submit job has no response. All the other rest part 
>> working, such as list of jars. What are the possible reason here?
>> The only thing I set in flink-conf.yaml is to make rest.port: 8001, then 
>> See it works in command line in Flink 1.5.0
>> <screenshot.png>
>> But it is hanging there in web UI.
>> <p1928.png>
>> thanks
>> Will

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