为什么rdbms的单表读split方式是channel数量乘以5？
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- Java
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Description
我在优化datax抽取mysql数据的时候，并不能特别的理解task的数量
如下是 ReaderSplitUtil的切分实现，为什么这里是乘以5，5是经验值吗？还是有什么特殊的意义？
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`eachTableShouldSplittedNumber = eachTableShouldSplittedNumber * 5;`
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Research direction
Start by reading ReaderSplitUtil and the surrounding task-splitting logic, focusing on the eachTableShouldSplittedNumber = eachTableShouldSplittedNumber * 5 line. Determine the rationale for the multiplier and whether it is an empirical value, then record the confirmed explanation in the appropriate documentation.
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Assessment
- Tech stack
- java, mysql
- Domain
- databases
- Issue type
- Documentation
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100