final void map(long offset, int index) {
            offsetIndexMap.compute(offset, (k, v) -> {
                if (v == null) {
                    return new IndexAndCount(index);
                } else {
                    v.inc();
                    return v;
                }
            });
        }
Merge the right block to the left block
s3stream/src/main/java/com/automq/stream/s3/cache/LogCache.java