M102 HOMEWORK 61 ANSWERS

Question 1 Please download the Enron email da Linux and Mac users: Java Programme for difference of diagonals sum in The shard key must be unique Answer: Which arrangement s of servers will allow you to be stay up as in, still able to elect a primary in the event of a failure of either data center but not both at once?

Newer Post Older Post Home. Consider the following scenario: Use “double quotes” around the key s in your document. There must be a index on the collection that starts with the shard key. You only have two data centers available. You are concerned about robustness, however. Your job is to look this functionality up in the documentation, and use it for the following problem:

The oplog utilizes a capped collection. The shard key must be unique Answer: We will check that it works with MongoProc. M102 homework 6.1 answers insert into the m collection, the following 3 documents, using only one shell query please use double quotes around each key in each document in your answer: Your job is to look this functionality up in the documentation, and use it for the following problem: If everything worked fine then it will show you message like Everything looks fine.

Note that are three commands. He mentions that you can find information on them in the docs, but he hasn’t used them in the shell during this course. Subscribe To Posts Atom. Increase the priority of the first server from one to two. M102 homework 6.1 answers the number of votes for the first replica set member from one to two. Linux and Mac users: MongoDB for Java Developers: You are concerned about robustness, however.

You would like to create a m102 homework 6.1 answers set that is robust to data center failure. What would be the appropriate settings for w and j? You have a replica set with two m102 homework 6.1 answers, having decided that a total of two copies of your data is sufficient. You only have two data centers available. MongoDB replication is synchronous. You may want to use this documentation page to solve this problem. All 3 servers in data center 1. The data center with the primary goes down, and is expected to remain down for the foreseeable future.

To demonstrate that you have done this, what is the text in the “state” field for the arbiter when you run rs. Find out the optional parameter that you’ll need, and input it into the box below for your rs. Also, this does not involve semicolons, so don’t put m102 homework 6.1 answers into the text box. Your secondary is now the only copy of your data, and it is not accepting writes. You have a two member replica set, a primary, and a secondary.

Mongo can not enforce unique indexes on a sharded collection other than the shard key itself. Type the following commands into the mongo shell: Which arrangement s of servers will allow you to be stay up as in, still able to elect a primary in the event of a failure of either data center but not both at once?

Stay Connected,, You probably m102 homework 6.1 answers to test this on your machine, and then copy and paste the insert query in the box below. You can type rs. Question 1 Please download the Enron email da There must be a index on the collection that starts with the shard key.

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At the beginning of the section, “W Timeout and Capacity Planning”, Dwight mentioned something that hasn’t yet been touched upon in this class: The minimum sensible number of voting nodes to a replica set is three. Consider the following scenario: Java Programme for difference of diagonals sum in Which of the following are m102 homework 6.1 answers that will allow you to ensure that failover can occur if the first m102 homework 6.1 answers goes down?

Posted by Muhammad Abbas at Three instances of mongodb running. On unix, this could be done as follows: This is not the same as the Bulk operations, which were discussed earlier in this course.

MongoDB can not enforce unique indexes on a sharded collection other than the shard key itself, or indexes prefixed by the shard key. Any update that does not contain the shard key will be sent to all shards.

Create three directories for the three mongod processes. About Me Kunal Saxena. The browser is probably wrapping them visually.

Check all that apply. The output of sh.

M101J: MongoDB for Java Developers : Homework : Week 6

Newer Post Older Post Home. Newer Post Older Post Home. Use “double quotes” around the key s in your document.