Error when importing backup data from TiDB V4.0.0 to TiDB V6.1.0: Variable 'tidb_index_lookup_concurrency' can't be set to the value of '-1'

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Original topic: TiDB V4.0.0 备份数据导入TiDB V6.1.0 报错 Variable ‘tidb_index_lookup_concurrency’ can’t be set to the value of ‘-1’

| username: TiDBer_EZRFJMZK

Error when importing backup data from TiDB V4.0.0 to TiDB V6.1.0: Variable ‘tidb_index_lookup_concurrency’ can’t be set to the value of ‘-1’

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| username: Billmay表妹 | Original post link

The default value of tidb_enable_clustered_index is INT_ONLY. This means that for tables with an integer primary key, the clustered index is enabled by default. For tables with a non-integer primary key, the clustered index is disabled by default.

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| username: TiDBer_EZRFJMZK | Original post link

Hello, is it set up like this?

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| username: Billmay表妹 | Original post link

Here are the documents, you can check them out~

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| username: system | Original post link

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