{"url":"https://api.github.com/repos/apache/spark/pulls/30119","id":507471860,"node_id":"MDExOlB1bGxSZXF1ZXN0NTA3NDcxODYw","html_url":"https://github.com/apache/spark/pull/30119","diff_url":"https://github.com/apache/spark/pull/30119.diff","patch_url":"https://github.com/apache/spark/pull/30119.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/30119","number":30119,"state":"closed","locked":false,"title":"[SPARK-33204][UI]The 'Event Timeline' area cannot be opened when a spark application has some failed jobs.","user":{"login":"echohlne","id":52202080,"node_id":"MDQ6VXNlcjUyMjAyMDgw","avatar_url":"https://avatars.githubusercontent.com/u/52202080?v=4","gravatar_id":"","url":"https://api.github.com/users/echohlne","html_url":"https://github.com/echohlne","followers_url":"https://api.github.com/users/echohlne/followers","following_url":"https://api.github.com/users/echohlne/following{/other_user}","gists_url":"https://api.github.com/users/echohlne/gists{/gist_id}","starred_url":"https://api.github.com/users/echohlne/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/echohlne/subscriptions","organizations_url":"https://api.github.com/users/echohlne/orgs","repos_url":"https://api.github.com/users/echohlne/repos","events_url":"https://api.github.com/users/echohlne/events{/privacy}","received_events_url":"https://api.github.com/users/echohlne/received_events","type":"User","site_admin":false},"body":"### What changes were proposed in this pull request?\r\nThe page returned by /jobs in Spark UI will store the detail information of each job in javascript like this:\r\n```javascript\r\n{\r\n 'className': 'executor added',\r\n 'group': 'executors',\r\n 'start': new Date(1602834008978),\r\n 'content': '