huangmengbin edited a comment on pull request #5369:
URL: https://github.com/apache/incubator-doris/pull/5369#issuecomment-879117362


   > ## Proposed changes
   > In the previous broker load, multiple OlapTableSinks would send data to 
the same LoadChannel,
   > and because of the lock granularity problem, LoadChannel could only 
process these requests serially,
   > which made it impossible to make full use of cluster resources.
   > 
   > This CL modifies the related locks so that LoadChannel can process these 
requests in parallel.
   > 
   > In the test, with a size of 20G, the load speed of 334 million rows of 
data in 3 nodes has been
   > increased from 9min to 5min, and after enabling 2 concurrency, it can be 
increased to 3min.
   > 
   > Also modify the profile of load job.
   > 
   > ## Types of changes
   > * [x]  Breaking change (fix or feature that would cause existing 
functionality to not work as expected)
   > 
   > ## Checklist
   > * [x]  I have created an issue on (Fix [[Performance] Import the load 
performace #5281](https://github.com/apache/incubator-doris/issues/5281) ) and 
described the bug/feature there in detail
   
   Hi, morningman !
       
请问一下可以更详细地描述一下当时测试时的信息吗?比如列的数量、哪种数据模型(Uniq、Aggregate、Duplicate),等等?我在uniq模型上进行测试(9G数据、9台机器、1.3亿行、246列)
 没有发现其有较明显的提速(13.5min->10min),不知道是否符合代码的预期。(暂时还没找到原因
   Thanks !


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