Hello,
i’ve newly installed xwiki on a debian machine. The problem i have: Image Uploads for a Page result into an error:
[XWiki Solr index thread] ERROR .DocumentSolrMetadataExtractor - Failed to retrieve the content of attachment [Attachment xwiki:Main.WebHome@1739783084018-385.png]
org.apache.tika.exception.TikaException: image/png parse error
at org.apache.tika.parser.image.ImageParser.extractMetadata(ImageParser.java:205)
at org.apache.tika.parser.image.AbstractImageParser.parse(AbstractImageParser.java:79)
at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:298)
at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:298)
at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:203)
at org.apache.tika.Tika.parseToString(Tika.java:525)
at org.apache.tika.Tika.parseToString(Tika.java:495)
at org.xwiki.tika.internal.TikaUtils.parseToString(TikaUtils.java:153)
at org.xwiki.search.solr.internal.metadata.AbstractSolrMetadataExtractor.getContentAsText(AbstractSolrMetadataExtractor.java:534)
at org.xwiki.search.solr.internal.metadata.DocumentSolrMetadataExtractor.setAttachment(DocumentSolrMetadataExtractor.java:333)
at org.xwiki.search.solr.internal.metadata.DocumentSolrMetadataExtractor.setAttachments(DocumentSolrMetadataExtractor.java:313)
at org.xwiki.search.solr.internal.metadata.DocumentSolrMetadataExtractor.setExtras(DocumentSolrMetadataExtractor.java:239)
at org.xwiki.search.solr.internal.metadata.DocumentSolrMetadataExtractor.setFieldsInternal(DocumentSolrMetadataExtractor.java:152)
at org.xwiki.search.solr.internal.metadata.AbstractSolrMetadataExtractor.getSolrDocument(AbstractSolrMetadataExtractor.java:171)
at org.xwiki.search.solr.internal.DefaultSolrIndexer.lambda$getSolrDocument$0(DefaultSolrIndexer.java:615)
at org.xwiki.bridge.internal.DefaultDocumentContextExecutor.call(DefaultDocumentContextExecutor.java:65)
at org.xwiki.search.solr.internal.DefaultSolrIndexer.getSolrDocument(DefaultSolrIndexer.java:615)
at org.xwiki.search.solr.internal.DefaultSolrIndexer.processBatch(DefaultSolrIndexer.java:504)
at org.xwiki.search.solr.internal.DefaultSolrIndexer.run(DefaultSolrIndexer.java:466)
at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: javax.imageio.IIOException: Error reading PNG metadata
at java.desktop/com.sun.imageio.plugins.png.PNGImageReader.readMetadata(PNGImageReader.java:918)
at java.desktop/com.sun.imageio.plugins.png.PNGImageReader.getImageMetadata(PNGImageReader.java:1840)
at org.apache.tika.parser.image.ImageParser.extractMetadata(ImageParser.java:187)
... 19 common frames omitted
Caused by: javax.imageio.IIOException: Invalid chunk length 0
at java.desktop/com.sun.imageio.plugins.png.PNGImageReader.readMetadata(PNGImageReader.java:792)
... 21 common frames omitted
i am quite puzzled why this is happening, because i don’t find any similiar issues on the board.
Browser: Microsoft Edge Version 133.0.3065.69
Server: Debian GNU/Linux 12 (bookworm)
XWiki Installation: XWiki repository: xwiki-xjetty-mariadb (stable,now 17.0.0+1 all)
The error seems to be related to the indexing of the image and not so much its upload. Can you access and see that image you uploaded (from the page attachments tab, for example) ?
i am able to see the uploaded images, but only like 30 pixels height.
when i try to look at a image, the log got one more entry:
2025-02-18 15:30:58,124 [qtp1117509763-298 - http://wiki-server:8080/xwiki/bin/download/Main/WebHome/1739888843345-451.png?width=48&rev=1.1] WARN c.x.x.p.i.ImagePlugin - Failed to transform image attachment [1739888843345-451.png] for scaling, falling back to original attachment. Root error: [EOFException: ]
2025-02-18 15:31:04.575:WARN :oejes.DefaultServlet:qtp1117509763-285: Incorrect mapping for DefaultServlet at /favicon.ico. Use ResourceServlet
And I assume you don’t have that problem with the image file you have locally ?
It sounds like your image was only partially uploaded for some reason, but hard to tell why. Do you have any error or warning related to the actual thread which uploaded that image (some before the tika related one you pasted) ?
the image files are not fully uploaded, if i look for them in the filesystem, they are also cut at the top, the rest is filled with the alpha channel on zero (*.png).
The same images on the computer i upload to the wiki with, are in the sRGB color space.
in this try, i tried to upload a *.jpg . this is the first error i find in the log with the image as reference:
2025-02-18 16:06:57,700 [XWiki Solr index thread] ERROR ttachmentSolrMetadataExtractor - Failed to retrieve the content of attachment [Attachment xwiki:Main.WebHome@Test_Portrait_Alpha.jpg]
org.apache.tika.exception.TikaException: TIKA-198: Illegal IOException from org.apache.tika.parser.image.JpegParser@6fe50755
at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:304)
at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:298)
at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:203)
at org.apache.tika.Tika.parseToString(Tika.java:525)
at org.apache.tika.Tika.parseToString(Tika.java:495)
at org.xwiki.tika.internal.TikaUtils.parseToString(TikaUtils.java:153)
at org.xwiki.search.solr.internal.metadata.AbstractSolrMetadataExtractor.getContentAsText(AbstractSolrMetadataExtractor.java:534)
at org.xwiki.search.solr.internal.metadata.AttachmentSolrMetadataExtractor.setLocaleAndContentFields(AttachmentSolrMetadataExtractor.java:114)
at org.xwiki.search.solr.internal.metadata.AttachmentSolrMetadataExtractor.setFieldsInternal(AttachmentSolrMetadataExtractor.java:93)
at org.xwiki.search.solr.internal.metadata.AbstractSolrMetadataExtractor.getSolrDocument(AbstractSolrMetadataExtractor.java:171)
at org.xwiki.search.solr.internal.DefaultSolrIndexer.lambda$getSolrDocument$0(DefaultSolrIndexer.java:615)
at org.xwiki.bridge.internal.DefaultDocumentContextExecutor.call(DefaultDocumentContextExecutor.java:65)
at org.xwiki.search.solr.internal.DefaultSolrIndexer.getSolrDocument(DefaultSolrIndexer.java:615)
at org.xwiki.search.solr.internal.DefaultSolrIndexer.processBatch(DefaultSolrIndexer.java:504)
at org.xwiki.search.solr.internal.DefaultSolrIndexer.run(DefaultSolrIndexer.java:466)
at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.io.EOFException: End of data reached.
at com.drew.lang.StreamReader.getByte(StreamReader.java:62)
at com.drew.lang.SequentialReader.getInt8(SequentialReader.java:148)
at com.drew.imaging.jpeg.JpegSegmentReader.readSegments(JpegSegmentReader.java:125)
at com.drew.imaging.jpeg.JpegMetadataReader.process(JpegMetadataReader.java:124)
at com.drew.imaging.jpeg.JpegMetadataReader.readMetadata(JpegMetadataReader.java:77)
at com.drew.imaging.jpeg.JpegMetadataReader.readMetadata(JpegMetadataReader.java:93)
at com.drew.imaging.jpeg.JpegMetadataReader.readMetadata(JpegMetadataReader.java:104)
at org.apache.tika.parser.image.ImageMetadataExtractor.parseJpeg(ImageMetadataExtractor.java:119)
at org.apache.tika.parser.image.JpegParser.extractMetadata(JpegParser.java:56)
at org.apache.tika.parser.image.AbstractImageParser.parse(AbstractImageParser.java:79)
at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:298)
... 15 common frames omitted
The Errors before in the log:
2025-02-18 16:06:46,948 [qtp1117509763-311 - http://geo-wiki01:8080/xwiki/bin/download/Main/WebHome/1739783539231-925.png?width=150&height=150&keepAspectRatio=true] WARN c.x.x.p.i.ImagePlugin - Failed to transform image attachment [1739783539231-925.png] for scaling, falling back to original attachment. Root error: [EOFException: ]
2025-02-18 16:06:46,946 [qtp1117509763-19 - http://geo-wiki01:8080/xwiki/bin/download/Main/WebHome/1739783087811-863.png?width=150&height=150&keepAspectRatio=true] WARN c.x.x.p.i.ImagePlugin - Failed to transform image attachment [1739783087811-863.png] for scaling, falling back to original attachment. Root error: [EOFException: ]
2025-02-18 16:06:46,956 [qtp1117509763-23 - http://geo-wiki01:8080/xwiki/bin/download/Main/WebHome/1739783518009-854.png?width=150&height=150&keepAspectRatio=true] WARN c.x.x.p.i.ImagePlugin - Failed to transform image attachment [1739783518009-854.png] for scaling, falling back to original attachment. Root error: [EOFException: ]
2025-02-18 16:06:46,953 [qtp1117509763-318 - http://geo-wiki01:8080/xwiki/bin/download/Main/WebHome/1739783084018-385.png?width=150&height=150&keepAspectRatio=true] WARN c.x.x.p.i.ImagePlugin - Failed to transform image attachment [1739783084018-385.png] for scaling, falling back to original attachment. Root error: [EOFException: ]
2025-02-18 16:06:46,958 [qtp1117509763-285 - http://geo-wiki01:8080/xwiki/bin/download/Main/WebHome/1739888843345-451.png?width=150&height=150&keepAspectRatio=true] WARN c.x.x.p.i.ImagePlugin - Failed to transform image attachment [1739888843345-451.png] for scaling, falling back to original attachment. Root error: [EOFException: ]
all of these images have the same problem, i guess, because they are not fully uploaded and don’t fit to the expectation of the image parser.
are there other logs besides /var/log/xwiki ?
In my opinion, the upload definitely gets interrupted but xWiki does not complain and tells me, its successful. The resulting (readable) errors seem to result in corrupted files - .png being uploaded like 1/10th and .jpg totally failing.
Not the best solution, but because the logs were not verbose enough for me :
i’ve overwritten the server with ubuntu (the debian was a fresh install too, so it’s not a huge pain) to be able to have tomcat10 instead of jetty.
so maybe there is a well-hidden bug in jetty or the jetty-variant and maybe a bug in xWiki, not detecting a bad file transfer?
should i report something? I may try to reproduce it, when i have free time 
Uploading in general work well with Jetty+XWiki for sure. Would need to reproduce and debug exactly what is happening.
It would be great to create an issue on Loading..., yes, with as much detail as you can find to reproduce the problem.