Interface IndexWriter.IndexReaderWarmer

  • 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.

    public static interface IndexWriter.IndexReaderWarmer
    If 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.

    NOTE: warm(LeafReader) is called before any deletes have been carried over to the merged segment.