[FLINK-12184] HistoryServerArchiveFetcher isn't compatible with old version

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.4, 1.7.2, 1.8.0
• Fix Version/s: 1.7.3, 1.8.1, 1.9.0
• Component/s: Runtime / Coordination
• Labels: pull-request-available
• Assignee: Congxian Qiu
• Reporter: Yumeng Wang
• Created: 13/Apr/19 10:52
• Updated: 02/May/19 11:54
• Resolved: 02/May/19 11:54

Description

If we have old verison json files in history server, the HistoryServerArchiveFetcher can't convert legacy job overview. It will throw the NullPointerException when trying to convert legacy job overview because the tasks don't have the "pending" field.

Issue Links

• links to: GitHub Pull Request #8164
• links to: GitHub Pull Request #8313