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https://issues.apache.org/jira/browse/OOZIE-3488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16839618#comment-16839618
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Andras Salamon commented on OOZIE-3488:
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I agree, it's better to handle this is multiple jiras.
What about replacing {{Preconditions.checkNotNull}} with
{{Objects.requireNonNull}}? Standard JDK7 class, no need for external
libraries. Might be a separate jira of course. ( And we also have our own
[ParamChecker.notNull|https://github.com/apache/oozie/blob/master/core/src/main/java/org/apache/oozie/util/ParamChecker.java#L44]
).
Possibly Joiner could also be replaced without using an external library:
https://stackoverflow.com/a/22577565/21348
> Migrate from guava classes to the base Java implementations
> -----------------------------------------------------------
>
> Key: OOZIE-3488
> URL: https://issues.apache.org/jira/browse/OOZIE-3488
> Project: Oozie
> Issue Type: Improvement
> Reporter: Zsombor Gegesy
> Priority: Major
> Labels: code-cleanup
> Fix For: 5.2.0
>
> Attachments: OOZIE-3488.patch
>
>
> In Oozie, guava classes are used even when Java 8 already provides a
> compatible implementation, removing these usages would reduce the dependency
> to guava (which is regularly a headache due to her backward incompatible
> changes)
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