fanyang89 opened a new pull request, #2141:
URL: https://github.com/apache/zookeeper/pull/2141

   When a new txn log is created, it encounters a failure before writing to the 
file header. The txn log file is empty at this moment, the server starts up 
again, reads the file, and fails to load the database because the header is not 
recognized.
   
   The patch detects that the empty txn log is at the end of the database, and 
if the file is empty, it deletes the file and prompts the server to reboot to 
reload it.
   
   When one of the txn logs in the middle of the database is empty, it will 
refuse to start up since it's a real corruption.


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