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https://issues.apache.org/jira/browse/NUTCH-618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12576003#action_12576003
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Andrzej Bialecki commented on NUTCH-618:
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I noticed also another problem: o.a.n.u.MimeUtil doesn't use ObjectCache, so it
instantiates MimeTypes over and over again. It should do this once for a given
Configuration, and then use ObjectCache to store this object.
> Tika error "Media type alias already exists"
> --------------------------------------------
>
> Key: NUTCH-618
> URL: https://issues.apache.org/jira/browse/NUTCH-618
> Project: Nutch
> Issue Type: Bug
> Components: mime_type_detector
> Affects Versions: 1.0.0
> Reporter: Andrzej Bialecki
>
> After the upgrade to the latest Tika jar we see a lot of errors like this:
> 2008-03-06 08:07:20,659 WARN org.apache.tika.mime.MimeTypesReader: Invalid
> media type alias: text/xml
> org.apache.tika.mime.MimeTypeException: Media type alias already exists:
> text/xml
> at org.apache.tika.mime.MimeTypes.addAlias(MimeTypes.java:312)
> at org.apache.tika.mime.MimeType.addAlias(MimeType.java:238)
> at
> org.apache.tika.mime.MimeTypesReader.readMimeType(MimeTypesReader.java:168)
> at org.apache.tika.mime.MimeTypesReader.read(MimeTypesReader.java:138)
> at org.apache.tika.mime.MimeTypesReader.read(MimeTypesReader.java:121)
> at
> org.apache.tika.mime.MimeTypesFactory.create(MimeTypesFactory.java:56)
> at org.apache.nutch.util.MimeUtil.(MimeUtil.java:58)
> at org.apache.nutch.protocol.Content.(Content.java:85)
> at
> org.apache.nutch.protocol.http.api.HttpBase.getProtocolOutput(HttpBase.java:226)
> at
> org.apache.nutch.fetcher.Fetcher2$FetcherThread.run(Fetcher2.java:523)
> This is caused most likely by the duplicate tika-mimetypes.xml file - one
> copy is embedded inside the Tika jar, the other is found in Nutch conf/
> directory. The one inside the jar seems to be more recent, so I propose to
> simply remove the one we have in conf.
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