Tagged articles

disk watermark

2 articles · Page 1 of 1
Programmer1970
Programmer1970
Jan 9, 2025 · Operations

Understanding Elasticsearch Disk Watermarks in 3 Minutes

The article explains Elasticsearch's disk watermark mechanism—low, high, and flood stage thresholds—detailing why they are crucial for preventing data loss and maintaining cluster stability, how they work, how to configure them in elasticsearch.yml, and best‑practice recommendations for monitoring and storage planning.

ElasticSearchbest practicescluster-management
0 likes · 5 min read
Understanding Elasticsearch Disk Watermarks in 3 Minutes
vivo Internet Technology
vivo Internet Technology
Nov 22, 2023 · Operations

Investigation and Resolution of Elasticsearch node_concurrent_recoveries Performance Issue

The team traced read‑request timeouts to a single overloaded Elasticsearch node where an excessively high node_concurrent_recoveries setting caused many simultaneous shard recoveries and disk‑watermark‑driven relocations, and resolved the issue by lowering concurrent recoveries, enabling adaptive replica selection, and adjusting allocation settings.

CPUClusterElasticSearch
0 likes · 16 min read
Investigation and Resolution of Elasticsearch node_concurrent_recoveries Performance Issue