[I] [Bug] [paimon]

["wuwenchi (via GitHub)" <gi...@apache.org>]

wuwenchi opened a new issue, #5872:
URL: https://github.com/apache/paimon/issues/5872

   ### Search before asking
   
   - [x] I searched in the [issues](https://github.com/apache/paimon/issues) and found nothing similar.
   
   
   ### Paimon version
   
   1.2.0
   
   ### Compute Engine
   
   flink 1.20.1
   
   ### Minimal reproduce step
   
   very simple with 3 steps.
   
   1. create a table with primary key：
   ```sql
   create table tb98 (c1 int primary key not enforced, c2 int);
   ```
   
   2. Two writers are attempting to update the data with primary key 1 simultaneously.
   One is updating it to 8, and the other is updating it to 9.
    ：
   ```sql
   insert into tb98 values (1, 8);
   ```
   ```sql
   insert into tb98 values (1, 9);
   ```
   
   3. call `compaction` procedures.
   
   <img width="1594" height="1396" alt="Image" src="https://github.com/user-attachments/assets/80ee71bc-c701-4072-88a6-37eedfdf3222" />
   
   
   
   
   ### What doesn't meet your expectations?
   
   The value of primary key 1 queried from snapshot-2 and snapshot-3 is 9, but it changes to 8 after compaction. Compaction is only supposed to compress data and should not modify the data, right?
   
   Therefore, if the data was 9 before compaction, it should remain 9 after compaction.
   
   
   ### Anything else?
   
   _No response_
   
   ### Are you willing to submit a PR?
   
   - [ ] I'm willing to submit a PR!


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Re: [I] [Bug]After executing compact, the data has changed [paimon]

["JingsongLi (via GitHub)" <gi...@apache.org>]

JingsongLi closed issue #5872: [Bug]After executing compact, the data has changed
URL: https://github.com/apache/paimon/issues/5872


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Re: [I] [Bug]After executing compact, the data has changed [paimon]

["ArnavBalyan (via GitHub)" <gi...@apache.org>]

ArnavBalyan commented on issue #5872:
URL: https://github.com/apache/paimon/issues/5872#issuecomment-3208843856

   Will raise a patch for it
   


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