kaka11chen commented on PR #33525:
URL: https://github.com/apache/doris/pull/33525#issuecomment-2051212723

   This PR resolve this problem when a limited exchange returns EOF.
   ```
   curl http://172.21.0.42:18048/api/running_pipeline_tasks/30
   1 pipeline fragment contexts are still running!
   No.0 (elapse time = 1690.322900678s, InstanceId = 
c8c4f6e9ed7d4754-b3d5b99b8798de4d) : PipelineXFragmentContext Info:
   Tasks in instance 0:
   Task 0: QueryId: c8c4f6e9ed7d4754-b3d5b99b8798de4a
   InstanceId: c8c4f6e9ed7d4754-b3d5b99b8798de4d
   PipelineTask[this = 0x7f32e4820800, state = BLOCKED_FOR_SINK, dry run = 
false, elapse time = 1690.322908744s], block dependency = BroadcastDependency: 
id=1, block task = 1, ready=false, _always_ready=false, is cancelled=false, is 
running = false
   operators: 
   FILE_SCAN_OPERATOR: id=0, parallel_tasks=1, _eos = false , _opened = true, 
Scanner Context: id: 4e4413d9004620c8-4c09c1a1c2e6e4b4, total scanners: 48, 
blocks in queue: 6, _should_stop: false, _is_finished: false, free blocks: 1, 
limit: 1000000, _num_running_scanners: 0, _max_thread_num: 6, 
_max_bytes_in_queue: 858993456, query_id: c8c4f6e9ed7d4754-b3d5b99b8798de4a
     DATA_STREAM_SINK_OPERATOR: id=1, Sink Buffer: (_should_stop = false, 
_busy_channels = 0)0.   FILE_SCAN_OPERATOR_DEPENDENCY: id=0, block task = 0, 
ready=true, _always_ready=false, is cancelled=false
   Write Dependency Information: 
   1.     ExchangeSinkQueueDependency: id=1, block task = 0, ready=true, 
_always_ready=false, is cancelled=false
   2.       BroadcastDependency: id=1, block task = 1, ready=false, 
_always_ready=false, is cancelled=false
   Runtime Filter Dependency Information: 
   Finish Dependency Information: 
   3.   DATA_STREAM_SINK_OPERATOR_FINISH_DEPENDENCY: id=1, block task = 0, 
ready=false, _always_ready=false, is cancelled=false
   ```


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