MapReduce Forum

guava dependency in HDP 1.3?

  • #45943
    Ben Popp
    Participant

    I was surprised to see the guava-11.0.2.jar in the /usr/lib/hadoop/lib directory of the HDP 1.3 sandbox VM. Some of my MapReduce jobs use a newer version of guava, and it seems like they are now picking up this older version instead (causing problems).

    guava is not in my vanilla Apache Hadoop 1.2.1 install. is this an HDP-specific dependency, and is it expected to pre-empt client submitted jars in the classloaders for a MR job?

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    Replies
  • #46111
    Carter Shanklin
    Participant

    If it causes a problem you can “export HADOOP_USER_CLASSPATH_FIRST=true”

    #46115
    Ben Popp
    Participant

    Thanks, i will definitely try that.

    #47480
    Phil Eberhardt
    Participant

    I’ve tried to export HADOOP_USER_CLASSPATH_FIRST, but it doesn’t seem to help. I submitted a job from Java instead of through the command line.

    Should the above export still have an effect?

    #47487
    Phil Eberhardt
    Participant

    Actually I found related job configuration properties that help, “mapreduce.job.user.classpath.first” and “mapreduce.user.classpath.first” depending on the Hadoop version.

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