(AppPipeline): If the log configuration includes the "@timestamp" field, it will result in the inability to create an index_template, and the data cannot be written to OpenSearch.

[AlbertMingXu]

Describe the bug

If the log configuration includes the "@timestamp" field, it will result in the inability to create an index_template, and the data cannot be written into OpenSearch.

Expected Behavior

The index_template can be created successfully, and data can be written to OpenSearch.

Current Behavior

The index_template can not be created, and data can not be written to OpenSearch.

Reproduction Steps

1. Create a log configuration that includes the "@timestamp" field name and set it as the timekey.
2. Use this log configuration to create an AppPipeline.

Possible Solution

No response

Additional Information/Context

No response

Solution Version

2.1.0

AWS Region. e.g., us-east-1

No response

Other information

No response

[AlbertMingXu]

An emergency fix for this issue will be released in the upcoming 2.1.2 version.