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How to fix MongoDB Error Code – 135 – StaleTerm

How to Fix MongoDB Error Code – 135 – StaleTerm

MongoDB is a popular NoSQL database that offers high performance, scalability, and flexibility. However, like any software, it can encounter errors that need to be resolved. One such error is MongoDB Error Code – 135 – StaleTerm. In this article, we will explore what this error means and how to fix it.

Understanding MongoDB Error Code – 135 – StaleTerm

MongoDB Error Code – 135 – StaleTerm occurs when a write operation fails due to a stale term. In MongoDB, a term refers to a specific point in time when a replica set elects a primary node. Each term has a unique term number, and the primary node is responsible for assigning term numbers to write operations.

When a write operation is performed, MongoDB checks if the term number associated with the operation matches the current term number. If they don’t match, it means that the operation is stale and cannot be applied. This is when MongoDB throws the Error Code – 135 – StaleTerm.

Causes of MongoDB Error Code – 135 – StaleTerm

There are several reasons why you might encounter MongoDB Error Code – 135 – StaleTerm:

  • Network Partition: If a network partition occurs and the primary node becomes isolated from the replica set, it may continue to assign term numbers to write operations. When the network partition is resolved, the primary node rejoins the replica set, but the term numbers assigned during the isolation period become stale.
  • Election Process: During the election process, when a new primary node is elected, the term number changes. If a write operation is attempted with a stale term number before the election process completes, MongoDB throws the Error Code – 135 – StaleTerm.

Fixing MongoDB Error Code – 135 – StaleTerm

To fix MongoDB Error Code – 135 – StaleTerm, you can follow these steps:

Step 1: Check Replica Set Status

First, check the status of your replica set using the following command in the MongoDB shell:

rs.status()

This command will provide information about the current primary node, secondary nodes, and their term numbers.

Step 2: Identify the Stale Term Number

Identify the stale term number associated with the write operation that triggered the error. You can find this information in the error message or by examining the logs.

Step 3: Restart the Primary Node

If the primary node is the one with the stale term number, you can try restarting it. Restarting the primary node will trigger a new election process, and a new term number will be assigned. This can resolve the stale term issue.

Step 4: Reapply the Write Operation

Once the primary node is restarted and the election process completes, reapply the write operation that triggered the error. The new term number should match, and the operation should succeed.

Summary

MongoDB Error Code – 135 – StaleTerm occurs when a write operation fails due to a stale term number. This can happen during network partitions or the election process. To fix this error, check the replica set status, identify the stale term number, restart the primary node if necessary, and reapply the write operation. If you need assistance with MongoDB hosting or any other VPS hosting services, consider Server.HK for reliable and high-performance solutions.