[FLINK-31430] Support migrating states between different instances of TableWriteImpl and AbstractFileStoreWrite

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: table-store-0.4.0
• Fix Version/s: table-store-0.4.0
• Component/s: Table Store
• Labels: pull-request-available
• Assignee: Caizhi Weng
• Reporter: Caizhi Weng
• Created: 14/Mar/23 02:51
• Updated: 17/Mar/23 03:31
• Resolved: 17/Mar/23 03:31

Description

Currently Table and TableWrite in Flink Table Store have a fixed schema. However to consume schema changes, Flink Table Store CDC sinks should have the ability to change its schema during a streaming job.

This require us to pause and store the states of a TableWrite, then create a TableWrite with newer schema and recover the states in the new TableWrite.

Issue Links

• links to: GitHub Pull Request #605
• links to: GitHub Pull Request #605