(doris) branch master updated: [fix](multi table) fix single stream multi table memory leak (#38255)

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The following commit(s) were added to refs/heads/master by this push:
     new afc5593ca59 [fix](multi table) fix single stream multi table memory 
leak (#38255)
afc5593ca59 is described below

commit afc5593ca593bce79f34b39f40d628f9d4de2fb3
Author: hui lai <1353307...@qq.com>
AuthorDate: Thu Jul 25 09:44:32 2024 +0800

    [fix](multi table) fix single stream multi table memory leak (#38255)
    
    We meet OOM when using single stream multi table
    
    
![image](https://github.com/user-attachments/assets/748e9914-d591-4f41-8b28-412d3cecc841)
    
    It exist memory leak, and heap profile like:
    
    
![image](https://github.com/user-attachments/assets/af30c593-88ea-44f6-bba1-82436b13f99f)
    
    The stream load context will not release in some exception conditions as
    plan failed for high concurrency causing timeout when obtaining read
    lock. It is introduced by https://github.com/apache/doris/pull/35458
    
    The solution effect is shown in the following figure, which can run
    stably with a small amount of memory
    
    
![image](https://github.com/user-attachments/assets/4483e0a5-6c0c-4cdc-b8ed-3408da6a86b2)
---
 be/src/io/fs/multi_table_pipe.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/be/src/io/fs/multi_table_pipe.cpp 
b/be/src/io/fs/multi_table_pipe.cpp
index 789903cc1ca..d7fdd8a738b 100644
--- a/be/src/io/fs/multi_table_pipe.cpp
+++ b/be/src/io/fs/multi_table_pipe.cpp
@@ -326,6 +326,19 @@ void MultiTablePipe::_handle_consumer_finished() {
     _ctx->number_filtered_rows = _number_filtered_rows;
     _ctx->number_unselected_rows = _number_unselected_rows;
     _ctx->commit_infos = _tablet_commit_infos;
+
+    // remove ctx to avoid memory leak.
+    for (const auto& pair : _planned_tables) {
+        if (pair.second) {
+            
doris::ExecEnv::GetInstance()->new_load_stream_mgr()->remove(pair.second->id);
+        }
+    }
+    for (const auto& pair : _unplanned_tables) {
+        if (pair.second) {
+            
doris::ExecEnv::GetInstance()->new_load_stream_mgr()->remove(pair.second->id);
+        }
+    }
+
     LOG(INFO) << "all plan for multi-table load complete. number_total_rows="
               << _ctx->number_total_rows << " number_loaded_rows=" << 
_ctx->number_loaded_rows
               << " number_filtered_rows=" << _ctx->number_filtered_rows


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