hollow/src/main/java/com/netflix/hollow/core/memory/SegmentedByteArray.java
private void ensureCapacity(int segmentIndex) {
        while(segmentIndex >= segments.length) {
            segments = Arrays.copyOf(segments, segments.length * 3 / 2);
        }

        if(segments[segmentIndex] == null) {
            segments[segmentIndex] = memoryRecycler.getByteArray();
        }
    }
private void ensureCapacity(int segmentIndex) {
        while(segmentIndex >= segments.length) {
            segments = Arrays.copyOf(segments, segments.length * 3 / 2);
        }

        if(segments[segmentIndex] == null) {
            segments[segmentIndex] = memoryRecycler.getByteArray();
        }
    }
Ensures that the segment at segmentIndex exists

@param segmentIndex the segment index