[FLINK-26536] PyFlink RemoteKeyedStateBackend#merge_namespaces bug

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.13.0
• Fix Version/s: 1.14.5, 1.15.0, 1.13.7
• Component/s: API / Python
• Labels: pull-request-available
• Assignee: Juntao Hu
• Reporter: Juntao Hu
• Created: 08/Mar/22 09:06
• Updated: 22/Mar/22 14:12
• Resolved: 22/Mar/22 12:09

Description

There's two bugs in RemoteKeyedStateBackend#merge_namespaces:

• data in source namespaces are not commited before merging
• target namespace is added at the head of sources_bytes, which causes java side SimpleStateRequestHandler to leave one source namespace unmerged

Issue Links

• links to: GitHub Pull Request #19008
• links to: GitHub Pull Request #19173