- All Known Implementing Classes:
- Enclosing class:
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public static interface IndexWriter.IndexReaderWarmer
DirectoryReader.open(IndexWriter)has been called (ie, this writer is in near real-time mode), then after a merge completes, this class can be invoked to warm the reader on the newly merged segment, before the merge commits. This is not required for near real-time search, but will reduce search latency on opening a new near real-time reader after a merge completes.
- WARNING: This API is experimental and might change in incompatible ways in the next release.
warm(LeafReader)is called before any deletes have been carried over to the merged segment.