Runbook

High MongoDB Journal File Fragmentation

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Overview

MongoDB is a popular NoSQL database used extensively for its flexibility, scalability, and high performance. In MongoDB, journal files are used for write-ahead logging and recovery in case of unexpected shutdowns. However, when these journal files become highly fragmented, it can cause performance degradation and even lead to data loss. This incident type refers to the problem of high journal file fragmentation in MongoDB that requires immediate attention from software engineers to prevent any further damage.

Parameters

Debug

Get fragmentation percentage of MongoDB journal files

Check available free space on MongoDB journal device

Check MongoDB's journal commit interval

Check MongoDB's current journal write concern

Check MongoDB journal file size

Check MongoDB journaling options

Check current MongoDB journal usage

Check MongoDB's current journal commit wait time

Repair

Increase the journal commit interval to reduce the frequency of disk writes.

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