Elasticsearch - Performance and Scaling
If an Elasticsearch cluster has 3 nodes and an index has number_of_replicas set to 2, what is the maximum number of shard copies that can be allocated per shard?
If an Elasticsearch cluster has 3 nodes and an index has number_of_replicas set to 2, what is the maximum number of shard copies that can be allocated per shard?
medium📝 Predict Output Q5 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand shard allocation rules
Each shard copy (primary + replicas) must be on different nodes to avoid data loss.Step 2: Calculate max shard copies per shard
With 3 nodes, max copies = 3 (1 primary + 2 replicas), matching cluster nodes.Final Answer:
3 -> Option AQuick Check:
Max shard copies ≤ number of nodes [OK]
Quick Trick: Shard copies cannot exceed number of nodes [OK]
Common Mistakes:
MISTAKES- Ignoring node count limits
- Assuming replicas can be on same node
- Confusing replicas count with total copies
Master "Performance and Scaling" in Elasticsearch
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Elasticsearch Quizzes