nsivabalan commented on issue #10542:
URL: https://github.com/apache/hudi/issues/10542#issuecomment-1979914443

   hey @xuzifu666 : 
   do you happened to have the old data intact which had data loss. We would 
like to root cause this. 0.x release line will be used by lot of OSS users. So, 
we really wanna get to the bottom of it and fix it. 
   
   Would greatly appreciate if you an help us triage this. 
   
   - Do you happened to know when exactly the data loss happens. do you see 
anything interesting in the timeline around the time the data loss happens. 
   - Is it a single writer or multi-writer. 
   - We do have some suspicion around log record reading that we are chasing. 
Ref ticket: https://github.com/apache/hudi/issues/10803 But I do not want to 
bias this one. lets get more info about when exactly data loss is seen. 
   - Are there any task retries in general. I am not familiar w/ flink. But in 
spark, we might have spark task retries. Are there any such things happening in 
your pipeline. 
   - Is it happening across all pipelines occasionally or very few pipelines. 
And if its very few, is there any common characteristics like index type, 
metadata enabled, etc. in comparison to other pipelines which does not have the 
data loss issue. 
   - And can you confirm that these pipelines were running w/o any issues w/ 
older versions of hudi. 
   - Do you happened to reproduce this in a deterministic manner? 


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