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https://issues.apache.org/jira/browse/NUTCH-2633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16576958#comment-16576958
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ASF GitHub Bot commented on NUTCH-2633:
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sebastian-nagel commented on issue #374: NUTCH-2633 Fix deprecation warnings
when building Nutch master branch…
URL: https://github.com/apache/nutch/pull/374#issuecomment-412231476
Work to make Hadoop ready for Java 9/10/11 is still ongoing
([HADOOP-11123](https://issues.apache.org/jira/browse/HADOOP-11123)). After
that and when the Hadoop distributions integrated support for Java 9, users
need to upgrade their Hadoop clusters. Just, as an estimate, we probably have
to make sure that Nutch runs and compiles on Java 8 for the next 2-3 years. For
this time I would prefer to keep the javac.version as is. It avoids that a
patch introduces usage of new Java features which do not work on Java 8.
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> Fix deprecation warnings when building Nutch master branch under JDK 10.0.2+13
> ------------------------------------------------------------------------------
>
> Key: NUTCH-2633
> URL: https://issues.apache.org/jira/browse/NUTCH-2633
> Project: Nutch
> Issue Type: Improvement
> Components: build
> Affects Versions: 1.16
> Environment: java version "10.0.2" 2018-07-17
> Java(TM) SE Runtime Environment 18.3 (build 10.0.2+13)
> Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.2+13, mixed mode)
> Nutch master 01c5d6ea17d7b60d25d4e65462b2a654f10680c3 (Thu Jul 26 14:55:38
> 2018 +0200)
> Reporter: Lewis John McGibbney
> Assignee: Lewis John McGibbney
> Priority: Major
> Fix For: 1.16
>
>
> I just got around to making a dev upgrade to >= JDK 10.
> When building master using environment JDK
> I get several compile time deprecations which are reflected in the attached
> build log.
> Additionally, I get some issues with Ivy... see below
> {code}
> WARNING: An illegal reflective access operation has occurred
> WARNING: Illegal reflective access by
> org.apache.ivy.util.url.IvyAuthenticator
> (file:/Users/lmcgibbn/.ant/lib/ivy-2.3.0.jar) to field
> java.net.Authenticator.theAuthenticator
> WARNING: Please consider reporting this to the maintainers of
> org.apache.ivy.util.url.IvyAuthenticator
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future release
> [ivy:resolve] :: problems summary ::
> [ivy:resolve] :::: ERRORS
> [ivy:resolve] unknown resolver null
> [ivy:resolve] unknown resolver null
> [ivy:resolve] unknown resolver null
> {code}
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