Thumbnail recreate/refresh?

(from github.com/hottwerk)
Hello, I see a lot of thumbnails which previous shown a image in the search results. I checked them and somehow they are gone.

Is there a way to recreate / refresh these thumbnails? Thanks.

(from github.com/marevol)
To recreate thumbnails, recrawling is needed.

(from github.com/hottwerk)
I already did a few times. There is no other way?

(from github.com/hottwerk)
I deleted all thumbnails in thumbnail/.*
Then I restarted crawling, result is a lot of empty folders like /thumbnails/01da9/c14e3/5d4e8/d8341/09370/eca6c .
There is nothing in the logging about the thumbnail creation. Any idea where I should look?

(It did work before. Don’t know what I changed, only thing I remember was changing was making canonical empty, as I was having trouble crawling a specific site
crawler.document.html.canonical.xpath= )

(from github.com/marevol)
How did you delete thumbnail files? Did you delete directories?

(from github.com/hottwerk)
I deleted everything. Files and directories. Maybe I should also mention installed fess and elastic on a windows server. Don’t know if thats different. (because I could find /bin/generate-thumbnail for unix/linux but not a windows version of this file). But as I mentioned it worked in the beginning.

(from github.com/marevol)
Did you delete all docs in fess index or disable Check Last Modified before crawling?

(from github.com/hottwerk)
I disabled Check Last Modified.

(from github.com/hottwerk)
How can I delete all thumbs in Fess index?

(from github.com/hottwerk)
thumbnail_que has 310131 docs, fess:
.fess_config.thumbnail_queue
shards: 2 * 1 | docs: 310,131 | size: 79.78MB

(from github.com/marevol)
Try to run Thumbnail Generator job.

(from github.com/hottwerk)
This job is constantly running. I already restarted this job several times…

(from github.com/marevol)
Did you check fess.log?
I do not think the job works.

(from github.com/hottwerk)
I checked it. There are no errors. Restarted Fess. Thumbnail Generator is running. Still no error in Fess.log.
I searched the /thumb directory for * made today. And I see that there where 4 png images made today. (and a lot of empty folders). So seams to be doing something.

(from github.com/hottwerk)
These are in the fess-crawler.log:
2018-01-29 16:00:10,973 [main] INFO htmlThumbnailGenerator is available.
2018-01-29 16:00:10,986 [main] INFO msofficeThumbnailGenerator is available.
2018-01-29 16:00:10,997 [main] INFO pdfThumbnailGenerator is available.
2018-01-29 16:00:11,006 [main] INFO psThumbnailGenerator is available.
2018-01-29 16:00:11,013 [main] INFO imageThumbnailGenerator is available.
2018-01-29 16:00:11,079 [main] INFO Lasta Di boot successfully.
2018-01-29 16:00:11,082 [main] INFO SmartDeploy Mode: Warm Deploy

(from github.com/marevol)
Thumbnail Generator prints logs to fess.log.

(from github.com/marevol)
To change a log level, modify the following settging in fess.in.sh:

FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.log.level=warn"

(from github.com/hottwerk)
-Dfess.log.level=warn. No messages in fess.log. Should I put it on debug to see what is happening?

Question: if I delete the index “fess_config.thumbnail_queue” will it be created again from scratch?

(from github.com/marevol)
Try debug level logging.

Question: if I delete the index “fess_config.thumbnail_queue” will it be created again from scratch?

It might break a configuration.

(from github.com/hottwerk)
Thanks for your help but I tried debug level logging, there’s nothing in the log. Any idea’s…? I have given up :frowning: I will try to start with new installation. Still love your product :)!