f23ed6188d
Today we refresh automatically in the background by default very second. This default behavior has a significant impact on indexing performance if the refreshes are not needed. This change introduces a notion of a shard being `search idle` which a shard transitions to after (default) `30s` without any access to an external searcher. Once a shard is search idle all scheduled refreshes will be skipped unless there are any refresh listeners registered. If a search happens on a `serach idle` shard the search request _park_ on a refresh listener and will be executed once the next scheduled refresh occurs. This will also turn the shard into the `non-idle` state immediately. This behavior is only applied if there is no explicit refresh interval set. |
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| .. | ||
| aggregations.asciidoc | ||
| analysis.asciidoc | ||
| api.asciidoc | ||
| cluster.asciidoc | ||
| indices.asciidoc | ||
| mappings.asciidoc | ||
| plugins.asciidoc | ||
| search.asciidoc | ||