Debug Your Infrastructure

Get Instant Solutions for Kubernetes, Databases, Docker and more

AWS CloudWatch
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Pod Stuck in CrashLoopBackOff
Database connection timeout
Docker Container won't Start
Kubernetes ingress not working
Redis connection refused
CI/CD pipeline failing

Firebase (sdk) The operation was rejected due to a failed precondition.

The operation was attempted without meeting necessary preconditions.

Understanding Firebase Firestore

Firebase Firestore is a scalable, flexible database for mobile, web, and server development from Firebase and Google Cloud Platform. It keeps your data in sync across client apps through real-time listeners and offers offline support for mobile and web so you can build responsive apps that work regardless of network latency or Internet connectivity. Firestore is a NoSQL document database that lets you store, sync, and query data for your mobile and web apps at global scale.

Identifying the Symptom

When working with Firestore, you might encounter the error code firestore/failed-precondition. This error typically manifests when an operation is rejected because a necessary precondition was not met. It can be frustrating, especially if you're not sure what precondition is missing.

Common Scenarios

This error often occurs in scenarios where transactions or batched writes are involved. For instance, attempting to perform a write operation on a document that is locked or in a state that does not allow the operation can trigger this error.

Explaining the Issue

The firestore/failed-precondition error indicates that the operation was attempted without satisfying certain conditions that are required for the operation to proceed. This could be due to:

  • Attempting to write to a document that is currently locked by another transaction.
  • Trying to perform operations that require a specific state or configuration that is not currently met.

Technical Details

Firestore uses optimistic concurrency control to manage transactions. This means that if a transaction is attempted on a document that has been modified since the transaction began, the transaction will fail with a precondition error. This is to ensure data consistency and integrity.

Steps to Fix the Issue

To resolve the firestore/failed-precondition error, follow these steps:

1. Review Preconditions

Ensure that all necessary preconditions for your operation are met. For instance, if you're performing a transaction, make sure that the documents involved are not being modified by another operation simultaneously.

2. Retry the Operation

If the error is due to a temporary condition, such as a document lock, retrying the operation after a short delay may resolve the issue. Implementing an exponential backoff strategy can be effective here.

3. Check Firestore Rules

Ensure that your Firestore security rules are not inadvertently causing the precondition failure. You can review and edit your rules in the Firebase Console.

4. Consult Documentation

For more detailed information on handling transactions and preconditions in Firestore, refer to the Firestore Transactions Documentation.

Conclusion

Encountering the firestore/failed-precondition error can be a hurdle, but understanding the underlying causes and implementing the suggested steps can help you resolve it efficiently. Always ensure that your operations meet the necessary preconditions and consider implementing robust error handling and retry mechanisms in your application.

Master 

Firebase (sdk) The operation was rejected due to a failed precondition.

 debugging in Minutes

— Grab the Ultimate Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands
Real-world configs/examples
Handy troubleshooting shortcuts
Your email is safe with us. No spam, ever.

Thankyou for your submission

We have sent the cheatsheet on your email!
Oops! Something went wrong while submitting the form.

Firebase (sdk) The operation was rejected due to a failed precondition.

Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands
Your email is safe thing.

Thankyou for your submission

We have sent the cheatsheet on your email!
Oops! Something went wrong while submitting the form.

MORE ISSUES

Deep Sea Tech Inc. — Made with ❤️ in Bangalore & San Francisco 🏢

Doctor Droid