Questions tagged [mongodb-3.6]

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How to set cache on windows 10 pro 64bit machine

When running Mongod I get the following WARNING: The file system cache of this machine is configured to be greater than 40% of the total memory. This can lead to increased memory pressure and poor ...
2
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2answers
4k views

MongoDB does not allow to create unique partial index in field that contains null

I'm using MongoDB 3.6.9 (with Ubuntu) to save a set of documents that contain one field named rss_id and for some documents, this field has the value null. I want to create a unique index in that ...
1
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0answers
258 views

Why did mongoDB reads from disk into cache suddenly increase?

This is a mongoDB replica set with 1 primary, 1 secondary and 1 arbiter. Suddenly the reads from disk into cache and cache page evictions increased 2x-3x and stay elevated since then (all metrics ...
1
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0answers
128 views

How to simulate slow queries on MongoDB

I need to write a shell script that finds and kills long running mongodb queries, but I don't have access to the database that runs slow queries, how to I simulate running slow queries on my local ...
0
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1answer
252 views

We use MongoDB 3.6 community version, How can i get the number of hits on single collection as well as bandwith usage?

Is it possible to get the number of hits on single collection as well as bandwith usage in mongodb ?
0
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2answers
1k views

MongoDB Replica Set InitialSyncOplogSourceMissing error

I am setting up a 3 nodes MongoDB replica set with one node in AWS using Mongo 3.6.12. There are about 400GB data need to sync to secondary nodes. Initial sync starts fine. However, after data sync ...
0
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2answers
2k views

How to read MongoDB .mdmp files

My MongoDB 3.6.2 craches randomly. It provides .mdmp files in the location where I installed MongoDB. The only problem is I don't know how to read these binary files. mongod.2017-12-21T08-01-49....