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https://issues.apache.org/jira/browse/NUTCH-2978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17648051#comment-17648051
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Sebastian Nagel commented on NUTCH-2978:
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{quote}there was a slf4j jar packaged within the tika-parser-scientific
package{quote}
See the exclusions in src/plugin/parse-tika/ivy.xml
{quote}xerces/xml-apis{quote}
Excluded as well from parse-tika. Many of the classes in xml-apis are for Java
11 also covered by the [module
java.xml|https://docs.oracle.com/en/java/javase/11/docs/api/java.xml/module-summary.html].
{quote}Something to look out for when upgrading Tika.{quote}
[~markus17], do you want to wait and verify whether a solution of this issue
allows to upgrade Tika? Or are the patch(es) ready to commit?
> Move to slf4j2 and remove log4j1 and reload4j
> ---------------------------------------------
>
> Key: NUTCH-2978
> URL: https://issues.apache.org/jira/browse/NUTCH-2978
> Project: Nutch
> Issue Type: Task
> Reporter: Markus Jelsma
> Priority: Major
> Attachments: NUTCH-2978-any23.patch, NUTCH-2978.patch
>
>
> I got in trouble upgrading some dependencies and got a lot of LinkageErrors
> today, or with a Tika upgrade, disappearing logs. This patch fixes that by
> moving to slf4j2, using the corrent log4j2-slfj4-impl2 and getting rid of old
> log4j -> reload4j.
>
> This patch fixes it.
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