Pengzna opened a new pull request, #15302:
URL: https://github.com/apache/iotdb/pull/15302

   when finished to write first DAL file, application will try to switch to 
second DAL file to write.
   
   during this process, application will naming the second DAL file based on 
max progressIndex among all deletions in first DAL file.
   
   however, due to some bug, the max progressIndex for first DAL file 
maintained in application is Minimum index, which is regarded as an invalid 
index. Therefore the application terminated in the exception and not open file 
channel again.
   
   thus further DAL writing requests will be influenced by the closed file 
channel
   
   <img width="1214" alt="image" 
src="https://github.com/user-attachments/assets/9a927b1c-90ad-4d8a-9ae7-c76e49fd38f2";
 />
   


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