The maintenance mode reflects the state where the
refresh_interval is set to -1 1 to help the rebuild index script to perform a higher throughput 23 rate during indexing (via bulk updates) with the consequence that changes will not be immediately visible.
In cases where the rebuildElasticIndex.php was aborted or canceled, the
refresh_interval may have not been reset (depending on the OS) to the default value therefore running the script with option
--update-settings should restore the setting as it was before the indexing run.
- "...refresh interval is set to -1, disabling the automatic refreshes, then requests ..."