# Thumbnail recreate/refresh? **URL:** \ **Category:** English:Fess\ **Created:** [January 23, 2018, 4:31pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577 "2018-01-23T16:31:45Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 23, 2018, 4:31pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/1 "2018-01-23T16:31:45Z")
(from [github.com/hottwerk](http://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. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 23, 2018, 9:11pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/2 "2018-01-23T21:11:01Z")
(from [github.com/marevol](http://github.com/marevol)) To recreate thumbnails, recrawling is needed. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 23, 2018, 10:25pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/3 "2018-01-23T22:25:26Z")
(from [github.com/hottwerk](http://github.com/hottwerk)) I already did a few times. There is no other way? ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 27, 2018, 12:14pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/4 "2018-01-27T12:14:44Z")
(from [github.com/hottwerk](http://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= ) ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 28, 2018, 1:11am UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/5 "2018-01-28T01:11:51Z")
(from [github.com/marevol](http://github.com/marevol)) How did you delete thumbnail files? Did you delete directories? ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 28, 2018, 10:12am UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/6 "2018-01-28T10:12:07Z")
(from [github.com/hottwerk](http://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. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 28, 2018, 1:07pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/7 "2018-01-28T13:07:34Z")
(from [github.com/marevol](http://github.com/marevol)) Did you delete all docs in fess index or disable [Check Last Modified](http://fess.codelibs.org/12.0/admin/general-guide.html#check-last-modified) before crawling? ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 28, 2018, 2:47pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/8 "2018-01-28T14:47:00Z")
(from [github.com/hottwerk](http://github.com/hottwerk)) I disabled Check Last Modified. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 8:21am UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/9 "2018-01-29T08:21:31Z")
(from [github.com/hottwerk](http://github.com/hottwerk)) How can I delete all thumbs in Fess index? ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 12:48pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/10 "2018-01-29T12:48:32Z")
(from [github.com/hottwerk](http://github.com/hottwerk)) thumbnail\_que has 310131 docs, fess: .fess\_config.thumbnail\_queue shards: 2 \* 1 | docs: 310,131 | size: 79.78MB ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 1:12pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/11 "2018-01-29T13:12:55Z")
(from [github.com/marevol](http://github.com/marevol)) Try to run Thumbnail Generator job. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 1:33pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/12 "2018-01-29T13:33:04Z")
(from [github.com/hottwerk](http://github.com/hottwerk)) This job is constantly running. I already restarted this job several times… ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 1:37pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/13 "2018-01-29T13:37:16Z")
(from [github.com/marevol](http://github.com/marevol)) Did you check fess.log? I do not think the job works. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 2:05pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/14 "2018-01-29T14:05:39Z")
(from [github.com/hottwerk](http://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. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 3:18pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/15 "2018-01-29T15:18:07Z")
(from [github.com/hottwerk](http://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 … ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 9:27pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/16 "2018-01-29T21:27:44Z")
(from [github.com/marevol](http://github.com/marevol)) Thumbnail Generator prints logs to fess.log. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 29, 2018, 9:29pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/17 "2018-01-29T21:29:40Z")
(from [github.com/marevol](http://github.com/marevol)) To change a log level, modify the following settging in fess.in.sh: ```auto FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.log.level=warn" ``` ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 30, 2018, 9:40am UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/18 "2018-01-30T09:40:35Z")
(from [github.com/hottwerk](http://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? ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [January 30, 2018, 12:42pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/19 "2018-01-30T12:42:20Z")
(from [marevol (Shinsuke Sugaya) · GitHub](http://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. ---
**Author:** ![discuss](https://discuss.codelibs.org/user_avatar/discuss.codelibs.org/discuss/32/298_2.png) [@discuss](https://discuss.codelibs.org/u/discuss)\ **Post date:** [February 2, 2018, 3:19pm UTC](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577/20 "2018-02-02T15:19:51Z")
(from [github.com/hottwerk](http://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 ☹ I will try to start with new installation. Still love your product :)! [Next page](https://discuss.codelibs.org/t/thumbnail-recreate-refresh/577.md?page=2)