cbomgit commented on issue #11821:
URL: https://github.com/apache/hudi/issues/11821#issuecomment-2308978687

   Thanks. Switching to SIMPLE index doesn't seem to help. Job fails at the 
following job and stage:
   
   ![Screenshot 2024-08-25 at 2 08 33 
PM](https://github.com/user-attachments/assets/accfdb9a-2c7d-4b4f-9e6c-0288330e8af2)
   ![Screenshot 2024-08-25 at 2 09 05 
PM](https://github.com/user-attachments/assets/550b16a5-edb4-4aac-aa49-f9ad1365fea8)
   ![Screenshot 2024-08-25 at 2 09 00 
PM](https://github.com/user-attachments/assets/d8897ef6-156a-440e-badf-84a83c521de4)
   
   The task logs show OOM error:
   
   ```
   2024-08-25T05:22:43.611+0000: [Full GC (Allocation Failure)  
36580M->33919M(40960M), 46.7644028 secs]
      [Eden: 0.0B(1792.0M)->0.0B(2048.0M) Survivors: 256.0M->0.0B Heap: 
36580.4M(40960.0M)->33919.2M(40960.0M)], [Metaspace: 117312K->117312K(135168K)]
    [Times: user=77.83 sys=0.20, real=46.76 secs] 
   2024-08-25T05:23:30.376+0000: [Full GC (Allocation Failure)  
33919M->33904M(40960M), 43.9530911 secs]
      [Eden: 0.0B(2048.0M)->0.0B(2048.0M) Survivors: 0.0B->0.0B Heap: 
33919.2M(40960.0M)->33904.1M(40960.0M)], [Metaspace: 117312K->113897K(135168K)]
    [Times: user=74.71 sys=0.03, real=43.96 secs] 
   #
   # java.lang.OutOfMemoryError: Java heap space
   # -XX:OnOutOfMemoryError="kill -9 %p
   kill -9 %p"
   #   Executing /bin/sh -c "kill -9 829
   kill -9 829"...
   
   ```
   
   For settings, I set simple index and upsert parallelism to 1500, but it 
doesn't seem to be using that setting here. Are there any HUDI config knobs you 
recommend tweaking to increase the throughput here? 


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