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From "John Leacox (JIRA)" <>
Subject [jira] [Commented] (CRUNCH-581) Remove dependency on Guava
Date Mon, 07 Dec 2015 19:02:11 GMT


John Leacox commented on CRUNCH-581:

What are the thoughts around non-passive changes required to the public APIs of crunch in
order to remove Guava? I haven't looked through all uses of Guava yet, but I have already
found one public method that depends on the Supplier class from Guava.

The below method on PTypes  takes a SerializableSuppler instance, which is a crunch extension
of the Guava Supplier that adds the Serializable interface. The Serializable interface is
simple and could be duplicated easily, but it would still require changes for consumers to

      Class<T> clazz,
      PTypeFamily typeFamily,
      SerializableSupplier<ExtensionRegistry> supplier)

> Remove dependency on Guava
> --------------------------
>                 Key: CRUNCH-581
>                 URL:
>             Project: Crunch
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Micah Whitacre
>            Assignee: Josh Wills
> As mentioned on CRUNCH0-356, we should look at removing all dependencies on Guava to
help simplify Crunch's dependency tree and to not constrain consumers on the versions of Guava
they want to consume.
> Looking at other projects like Spark, Hadoop, and HBase they all do not depend on Guava
but have copied a class or two internally that they depend on.

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