M101 HOMEWORK 6.1

Type the following commands into the mongo shell: There are three possibly true statement for this homework. Also omit –fork and use start mongod with Windows compatible paths i. You can type rs. Here you find updated answer with two possible outcomes as follow.

MongoDB can not enforce unique indexes on a sharded collection other than the shard key itself, or indexes prefixed by the shard key. In this assignment you will use the aggregation framework to find the most frequent author of comments on your blog Omit -p from mkdir. At this point, the replica set should be coming up. You can change the shard key on a collection if you desire.

m101 homework 6.1

It has been tested under Pymongo 2. The output of sh. Type the validation code below.

[Solution] Week 1 : Introduction : MP: MongoDB for Developers

You have a sharded system with three shards and have sharded the collections “students” in the “school” database across those shards. In this homework you will build a small replica set homeework your own computer.

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m101 homework 6.1

Note that are three commands. We will check that it works with validate. What would be the appropriate settings for w and j?

m101 homework 6.1

It 6.11 been tested under Pymongo 2. On unix, this could be done as follows: Also omit –fork and use start mongod with Windows compatible paths i.

You can type rs. Changed in version 3.

MongoDB university mp chapter 6 homework – bigmongodb

The browser is probably wrapping them visually. At this point, the replica set should be coming up. Which of the following statements are true about choosing and using a shard key?

Prior to MongoDB 3. There must be a index on the collection that starts with the shard key. On unix, this could be done as follows: Newer Post Older Post Home. Failed with error ‘migration already in progress’, from s0 to s1 databases: In this homework you will build a small replica set on your own computer.

Validate connects to your local replica set and checks that it has three nodes.

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M101 Homework 3 1

MongoDB replication is synchronous. The oplog utilizes a capped collection. In this assignment you will use the aggregation framework to find the most frequent author of comments on your blog There are three possibly true statement for this homework.

Create three directories for the three mongod processes.

What would be the appropriate settings for w and j? Homweork earlier versions of MongoDB, w: Type the following commands into the mongo shell: Changed in version 2.

The output of sh. You can change the shard key on a collection if you desire. Type the validation code below. Check all that apply. Check all that apply.