Answer
The balancer ensures even data distribution across shards by moving chunks when imbalance occurs.
Quick Answer
The balancer is a background process that ensures chunks are distributed evenly across shards. When shard chunk counts are imbalanced (difference exceeds a threshold), the balancer migrates chunks from the most-loaded shard to the least-loaded. You can schedule balancing windows to avoid running during peak hours and minimize performance impact.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ