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dm: support ignore online-ddl in precheck (#12137) #12807

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dm: support ignore online-ddl in precheck
Signed-off-by: Ran <huangran.alex@gmail.com>
ran-huang authored and ti-chi-bot committed Mar 7, 2023
commit 6375246be66766f19bf0183c51ad078156c8495f
1 change: 1 addition & 0 deletions dm/dm-precheck.md
Original file line number Diff line number Diff line change
@@ -129,6 +129,7 @@ Prechecks can find potential risks in your environments. It is not recommended t
| `table_schema` | Checks the compatibility of the table schemas in the upstream MySQL tables. |
| `schema_of_shard_tables`| Checks the consistency of the table schemas in the upstream MySQL multi-instance shards. |
| `auto_increment_ID` | Checks whether the auto-increment primary key conflicts in the upstream MySQL multi-instance shards. |
|`online_ddl`| Checks whether the upstream is in the process of [online-DDL](/dm/feature-online-ddl.md). |

> **Note:**
>