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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/10/12 02:47:51 UTC

[GitHub] [spark] sunchao commented on pull request #29843: [SPARK-29250][BUILD] Upgrade to Hadoop 3.2.1 and move to shaded client

sunchao commented on pull request #29843:
URL: https://github.com/apache/spark/pull/29843#issuecomment-706824666


   I'll take a look at the test failure which is new. 
   
   > ... if Hadoop community "officially" guarantees the compatibility
   
   I found [this blog post](https://blog.cloudera.com/upgrading-clusters-workloads-hadoop-2-hadoop-3/) which states that Hadoop 3 maintains wire compatibility with Hadoop 2. Even though it is not "official" it's very close IMO.


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