symious commented on PR #4075:
URL: https://github.com/apache/ozone/pull/4075#issuecomment-1363537386

   @errose28 In our cluster, we had the following exception.
   ```
   2022-12-21 09:20:06,060 [OMDoubleBufferFlushThread] ERROR 
org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer: Terminating with 
exit status 2: OMDoubleBuffer flush threadOM
   DoubleBufferFlushThreadencountered Throwable error
   java.lang.NullPointerException
           at 
org.apache.hadoop.ozone.om.helpers.RepeatedOmKeyInfo.getProto(RepeatedOmKeyInfo.java:76)
           at 
org.apache.hadoop.ozone.om.codec.RepeatedOmKeyInfoCodec.toPersistedFormat(RepeatedOmKeyInfoCodec.java:50)
   ```
   
   Since it's not IOException, it will be catched in the outer try-catch, maybe 
we should also keep the change for outer "throwable" catch?


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