无法创建上限的收藏夹Mongdb

Question

I am trying to create capped collection in MongoDB using Java-Mongo driver:

  CreateCollectionOptions options = new CreateCollectionOptions();
  options.capped(true);
  options.sizeInBytes(Long.MAX_VALUE);
  options.maxDocuments(12);

  db.createCollection("timeStamp", options);

If I check in mongodb, I see that the collection is not capped.

  >db.timeStamp.isCapped()
   false

Am I missing something here? MongoDB version is 3.4

Answer 1

Long.MAX_VALUE is 9,223,372,036,854,775,807.

8 exbibyte (1 exbibyte = 2 to the power of 53 bytes).

So it is obvious now you just have create something based on your memory limitations.

I'm not entirely sure how did it not error out. Please verify if your collection ever got created.