[jira] [Created] (FLINK-15085) History server overview page fails loading because of web-submit feature not in the config

["chaganti spurthi (Jira)" <ji...@apache.org>]

chaganti spurthi created FLINK-15085:
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             Summary: History server overview page fails loading because of web-submit feature not in the config
                 Key: FLINK-15085
                 URL: https://issues.apache.org/jira/browse/FLINK-15085
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Web Frontend
            Reporter: chaganti spurthi


History server has javascript errors while loading the overview page, because the web-submit feature not found in the config. 
{code:java}
main.9c4be059472ea41d7052.js:1 ERROR TypeError: Cannot read property 'web-submit' of undefined
    at new t (main.9c4be059472ea41d7052.js:1)
    at qr (main.9c4be059472ea41d7052.js:1)
    at Gr (main.9c4be059472ea41d7052.js:1)
    at ko (main.9c4be059472ea41d7052.js:1)
    at Oo (main.9c4be059472ea41d7052.js:1)
    at Object.Bo [as createRootView] (main.9c4be059472ea41d7052.js:1)
    at e.create (main.9c4be059472ea41d7052.js:1)
    at e.create (main.9c4be059472ea41d7052.js:1)
    at t.bootstrap (main.9c4be059472ea41d7052.js:1)
    at main.9c4be059472ea41d7052.js:1
{code}
It seems to be coming since this change [FLINK-13818|(https://issues.apache.org/jira/browse/FLINK-13818) ]  : [https://github.com/apache/flink/pull/9883]



The issue is that for history server we are not setting the web-submit feature in the conf and the /config endpoint returns 
{code:java}
{"refresh-interval":10000,"timezone-offset":-18000000,"timezone-name":"Eastern Time","flink-version":"<unknown>","flink-revision":"d9f8abb @ 04.12.2019 @ 16:16:24 EST"}{code}
while as in the Jobmanager the /config endpoint returns
{code:java}
{"refresh-interval":3000,"timezone-name":"Coordinated Universal Time","timezone-offset":0,"flink-version":"1.9-criteo-rc1-1573156762","flink-revision":"366237a @ 07.11.2019 @ 20:00:32 UTC","features":{"web-submit":true}}

{code}
*AppComponent.ts* fails at this line because the feature web-submit is not found in the config:
{code:java}
webSubmitEnabled = this.statusService.configuration.features['web-submit'];

{code}
This can be fixed in two ways:
 # Add defensive check in the *AppComponent.ts* 
{code:java}
 webSubmitEnabled =
    (this.statusService.configuration &&
        this.statusService.configuration.features &&
            this.statusService.configuration.features['web-submit']);{code}

 # Add the features property in the config file that *HistoryServer.java* generates.



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