public SegmentFd getSavedSegment() throws IOException {
        Preconditions.checkState(state == State.Saved);
        if (savedSegment != null) {
            return savedSegment;
        } else {
            return loadSavedSegment();
        }
    }
Try load saved segment from local disk.
indexr-segment/src/main/java/io/indexr/segment/rt/RealtimeSegment.java