# Lots of shards relocating post restore **URL:** \ **Category:** Elasticsearch\ **Created:** [March 5, 2026, 3:59pm UTC](https://discuss.elastic.co/t/lots-of-shards-relocating-post-restore/385356 "2026-03-05T15:59:58Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![linkerc](https://avatars.discourse-cdn.com/v4/letter/l/13edae/32.png) [@linkerc](https://discuss.elastic.co/u/linkerc)\ **Post date:** [March 5, 2026, 10:42pm UTC](https://discuss.elastic.co/t/lots-of-shards-relocating-post-restore/385356/2 "2026-03-05T22:42:08Z")
Not sure if it’s related. But ES 8.x seems to have rebalancing algo issue. > [@Is there a way to determine what triggers shard movement?](https://discuss.elastic.co/t/is-there-a-way-to-determine-what-triggers-shard-movement/380047): > > Our cluster all of a sudden starts to rebalance for no apparent reason. It's been going on for a day. I tweaked the setting "cluster.routing.allocation.balance.threshold" to 10 which means allow 10 shards difference between nodes. It's a cluster of around 90 data nodes. The cluster look to be pretty balanced. It has been running fine without issue for years. How would I debug this? Any pointer will be highly appreciated. We did update Ubuntu recently, but it should have nothing to do wit… Tweaking the parameters discussed in the link helped. --- _[View the full topic](https://discuss.elastic.co/t/lots-of-shards-relocating-post-restore/385356)._