The statement 'the creator is on hiatus light novel' indicates that the originator, most probably the writer of the light novel, has entered a state of hiatus. A hiatus can occur for multiple reasons. Maybe the creator has been working too hard and needs some time to relax and rejuvenate. Or perhaps they are facing some challenges in the plot development or character creation of the light novel and need to take a break to think things through. It also might be due to external factors like health problems or other personal matters that require their attention away from the work on the light novel.
Fans should anticipate a halt in the story's progression. There won't be any new chapters or volumes coming out in the near future. However, sometimes the publisher might release some side stories or special editions related to the light novel to keep the fans engaged during the hiatus. But generally, it's a time of waiting and hoping that the creator will return soon with new and exciting content for the light novel.
It's hard to say for sure. Sometimes it's difficult to keep track of whether it's on hiatus or not. You could look for announcements from the creators or in relevant comic forums.
The One Piece manga has gone on hiatus in the past. This could be for various reasons like ensuring the quality of the story or taking a break to recharge creativity.