Currently, Confluence logged some of the content indexing related Job inside the atlassian-confluence.logs file while the full reindex progress is logged inside the atlassian-confluence-index.log

Suggestion

• Whether it’s the actual content re-indexing task or the scheduled job that is supposed to fire content indexing it should both go to the same log (atlassian-confluence-index.log ).
• We can separate the scheduled indexing job logs, however, adjust the error message given ie: ‘Flushing or indexing is already in progress' into something that would mention where this job logs it’s output by adding “(see atlassian-confluence-index.log for info)” for example.