flink-cdc3.x版本不支持同步MySQL含有联合主键的表到doris中，任务会报异常并且停止

[BambooJWB]

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[BambooJWB]

Caused by: org.apache.flink.table.api.ValidationException: Chunk key column 'id,dep_code' doesn't exist in the primary keys [id,dep_code] of the table bkqw_loan.uc_syn_department.
at org.apache.flink.cdc.connectors.mysql.source.utils.ChunkUtils.getChunkKeyColumn(ChunkUtils.java:81) ~[flink-sql-connector-mysql-cdc-3.1.0.jar:3.1.0]
at org.apache.flink.cdc.connectors.mysql.source.assigners.MySqlChunkSplitter.analyzeTable(MySqlChunkSplitter.java:149) ~[flink-sql-connector-mysql-cdc-3.1.0.jar:3.1.0]
at org.apache.flink.cdc.connectors.mysql.source.assigners.MySqlChunkSplitter.splitChunks(MySqlChunkSplitter.java:116) ~[flink-sql-connector-mysql-cdc-3.1.0.jar:3.1.0]
at org.apache.flink.cdc.connectors.mysql.source.assigners.MySqlSnapshotSplitAssigner.splitTable(MySqlSnapshotSplitAssigner.java:304) ~[flink-sql-connector-mysql-cdc-3.1.0.jar:3.1.0]
at org.apache.flink.cdc.connectors.mysql.source.assigners.MySqlSnapshotSplitAssigner.splitChunksForRemainingTables(MySqlSnapshotSplitAssigner.java:568) ~[flink-sql-connector-mysql-cdc-3.1.0.jar:3.1.0]

[BambooJWB]

目前生产环境中MySQL用的是8.x，doris用的2.0.3版本，需要同步的MySQL表一共有三十多张表，其中有且仅有一张表是使用联合主键，其他表均是单字段唯一主键。第一次启动时正常的，数据能够同步到doris中，但是一旦有操作修改了这个联合主键的表，整个cdc会直接抛出异常并且导致整个cdc任务失败并且不断的重启。

[BambooJWB]

[yuxiqian]

Resolved in #3448. Try upgrading to 3.2.0.

[github-actions]

As required by Apache Flink, please report bugs or new features on Apache Jira under the project Flink using component tag Flink CDC. You must have a JIRA account in order to log cases and issues. If you don’t have an ASF JIRA account, you can request one at the ASF Self-serve portal, account creation requires review by the PMC member of the application project, which normally takes one to two working days to be approved.

[github-actions]

This issue has been closed because Flink CDC doesn't use GitHub issue trackers.