frischHWC opened a new pull request #1312:
URL: https://github.com/apache/hadoop-ozone/pull/1312


   ## What changes were proposed in this pull request?
   
   Solve HDDS-2411 by adding a Datanode chunk Validator for Ozone Freon test.
   
   Note that a new checksum is computed for each chunk.
   
   ## What is the link to the Apache JIRA
   
   https://issues.apache.org/jira/browse/HDDS-2411
   
   ## How was this patch tested?
   
   Manual tests were made by setting up a docker-compose cluster of 3 nodes 
(they are required as generator check for a pipeline with a factor THREE). 
   A login to a node with following commands:
   ozone freon rk --replicationType RATIS --factor THREE
   ozone freon dcg -p tester
   ozone freon dcgv -p tester
   
   To show that test was well working, a change in chunk size for validator 
involves (as expected) a failure:
   ozone freon dcg -p test -s 1000


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