Change Details

**Please do NOT touch the referenced article before investigating the issue.** **Reproduction steps:** Get https://en.wikipedia.org/w/api.php?action=query&format=json&prop=info|extracts|pageimages|revisions&formatversion=2&redirects=true&exintro=true&exsentences=5&explaintext=true&piprop=thumbnail&pithumbsize=300&rvprop=timestamp&titles=Hydrogen_damage&smaxage=300&maxage=300&uselang=content **Expected result**: Parameter `extract` contains a meaningful extract. **Actual result**: Parameter `extract` is an empty string: `{"batchcomplete":true,"query":{"normalized":[{"from":"Hydrogen_damage","to":"Hydrogen damage"}],"pages":[{"pageid":3605505,"ns":0,"title":"Hydrogen damage","contentmodel":"wikitext","pagelanguage":"en","pagelanguagehtmlcode":"en","pagelanguagedir":"ltr","touched":"2016-02-12T01:36:19Z","lastrevid":695808952,"length":8508,"extract":"","revisions":[{"timestamp":"2015-12-18T19:21:17Z"}]}]}}` I have noticed this before in another article and a null edit **(do NOT do that before investigation)** fixed that. It seems that some secondary information (i.e. data generated automatically from primary information) is broken, but I would expect all secondary information to be regenerated periodically.

**Please do NOT touch the referenced article before investigating the issue.** **Reproduction steps:** Get https://en.wikipedia.org/w/api.php?action=query&format=json&prop=info|extracts|pageimages|revisions&formatversion=2&redirects=true&exintro=true&exsentences=5&explaintext=true&piprop=thumbnail&pithumbsize=300&rvprop=timestamp&titles=Hydrogen_damage&smaxage=300&maxage=300&uselang=content **Expected result**: Parameter `extract` contains a meaningful extract. **Actual result**: Parameter `extract` is an empty string: ``` {"batchcomplete":true,"query":{"normalized":[{"from":"Hydrogen_damage","to":"Hydrogen damage"}],"pages":[{"pageid":3605505,"ns":0,"title":"Hydrogen damage","contentmodel":"wikitext","pagelanguage":"en","pagelanguagehtmlcode":"en","pagelanguagedir":"ltr","touched":"2016-02-12T01:36:19Z","lastrevid":695808952,"length":8508,"extract":"","revisions":[{"timestamp":"2015-12-18T19:21:17Z"}]}]}} ``` I have noticed this before in another article and a null edit **(do NOT do that before investigation)** fixed that. It seems that some secondary information (i.e. data generated automatically from primary information) is broken, but I would expect all secondary information to be regenerated periodically.

**Please do NOT touch the referenced article before investigating the issue.** **Reproduction steps:** Get https://en.wikipedia.org/w/api.php?action=query&format=json&prop=info|extracts|pageimages|revisions&formatversion=2&redirects=true&exintro=true&exsentences=5&explaintext=true&piprop=thumbnail&pithumbsize=300&rvprop=timestamp&titles=Hydrogen_damage&smaxage=300&maxage=300&uselang=content **Expected result**: Parameter `extract` contains a meaningful extract. **Actual result**: Parameter `extract` is an empty string: ` ``` {"batchcomplete":true,"query":{"normalized":[{"from":"Hydrogen_damage","to":"Hydrogen damage"}],"pages":[{"pageid":3605505,"ns":0,"title":"Hydrogen damage","contentmodel":"wikitext","pagelanguage":"en","pagelanguagehtmlcode":"en","pagelanguagedir":"ltr","touched":"2016-02-12T01:36:19Z","lastrevid":695808952,"length":8508,"extract":"","revisions":[{"timestamp":"2015-12-18T19:21:17Z"}]}]}} ``` I have noticed this before in another article and a null edit **(do NOT do that before investigation)** fixed that. It seems that some secondary information (i.e. data generated automatically from primary information) is broken, but I would expect all secondary information to be regenerated periodically.