QiuMM commented on issue #6517: Tasks got stuck when upload log files to hdfs
URL: 
https://github.com/apache/incubator-druid/issues/6517#issuecomment-433139697
 
 
   > Is FSDataOutputStream.write() blocking on errors without throwing 
exceptions
   
   Might be, but I'm not very sure and it's not convenient to reproduce. The 
hadoop cluster maintained by other team in my company, they adopt exponential 
back-off algorithm to retry when there are errors.

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