Configuring Multiple Synchronization Tasks in a DM 3 Worker Cluster

This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: DM 3 worker集群配置多个同步任务

| username: TiDBer_hwEZA4rV

My previous understanding was that the number of tasks a DM cluster can configure depends on the number of DM workers, which has been verified by the community. However, during a recent exchange with TiDB officials, they mentioned that it is possible to support a number of tasks greater than the number of workers. Testing revealed that in a cluster with three workers, the upstream could no longer bind to a worker when configuring the fourth task. What did the officials mean by this?

| username: 大鱼海棠 | Original post link

According to the official documentation, the number of tasks cannot be exceeded. The official documentation should be the standard. It is possible to synchronize multiple upstream data sources to a single target end in a single task. Is this what you mean?

| username: Hacker007 | Original post link

A worker is bound to a source. A worker can have multiple tasks, but the number of upstream sources for these tasks cannot exceed the number of workers.