private long addDeleteAndShouldCompactEntry() throws StoreException {
    // 1 Put entry and 1 delete that should be compacted
    MockId addedId = put(1, PUT_RECORD_SIZE, Utils.Infinite_Time).get(0);
    idsByLogSegment.get(2).add(addedId);
    delete(addedId, (long) 0, false);
    deletedAndShouldBeCompactedKeys.add(addedId);
    return PUT_RECORD_SIZE + DELETE_RECORD_SIZE;
  }
Add a blob that will be deleted right away, the the deletes' operation time will be set to 0 so the delete would
be fallen out of retention time.
@throws StoreException
ambry-store/src/test/java/com/github/ambry/store/BlobStoreTest.java