liaoxin01 opened a new pull request, #42297:
URL: https://github.com/apache/doris/pull/42297

   In high-concurrency single-replica load, the tablet_writer_add_block RPC may 
occupy the _heavy_work_pool completely, causing the 
response_slave_tablet_pull_rowset RPC to have no available threads for 
processing. As a result, tablet_writer_add_block waits indefinitely for a 
response from the slave tablet, leading to the import getting stuck until it 
times out.
   
   


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