[jira] [Created] (HADOOP-16446) Rolling upgrade to Hadoop 3.2.0 breaks due to backward in-compatible change

["xia0c (JIRA)" <ji...@apache.org>]

xia0c created HADOOP-16446:
------------------------------

             Summary: Rolling upgrade to Hadoop 3.2.0 breaks due to backward in-compatible change
                 Key: HADOOP-16446
                 URL: https://issues.apache.org/jira/browse/HADOOP-16446
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 3.2.0
            Reporter: xia0c


Hi,

When I try to update Hadoop-common to the last version 3.2.0, it breaks backward compatibility due to compile dependency change in commons.lang. This also breaks rolling upgrades since any client implementing this - like Apache Crunch. 

-The following code will fail to run with the error "java.lang.NoClassDefFoundError: org/apache/commons/lang/SerializationException":
  
{code:java}
public void Demo(){
    PCollection<String> data = MemPipeline.typedCollectionOf(strings(), "a");	
}
{code}

Thanks a lot.



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