You can set the merge policy to one of two settings: balanced or
aggressive.
- Balanced: This policy
strikes a balance between low latency and high throughput. This is the default
policy of an Endeca data domain.
- Aggressive: This
policy merges frequently and completely to keep query latency low at the
expense of average throughput.
The balanced policy is recommended for the majority of applications.
However, aggressive merging may help those applications that meet the following
criteria:
- Query latency is the primary
concern.
- A large fraction of the
records (for example, 20%) are either modified or deleted by incremental
updates before re-baselines.
- The time to perform an
aggressive merge is less than the time between incremental updates.
Note: Under normal conditions, you do not need to change the default
balanced policy.
