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Optimizely Knowledge Base

Changes to the event data export process in Optimizely X

  • Migrate your event data export process

As part of scheduled work to improve the performance and reliability of our Data Export feature for Optimizely X, we are changing the way you access your Optimizely X event data files.

Action Required

Please modify your event data export process to use the new AWS bucket name, folder path, and file naming structure according to the migration steps listed below. We will no longer generate event data in the current AWS bucket after July 14, 2017. 

Migration Steps

  1. Update your event data export process to use this AWS bucket name: optimizely-export-ng/

  2. Update the read folder to account_id/project_id/2.0/yyyy/mm/dd/experiment_id/
    For example: 123456789/234567890/2.0/2017/04/06/987654321/

  3. Update your process to extract and read the file parts.
    In the new AWS bucket, the event data is stored in multiple file parts instead of a single file (like in the current bucket). The file parts use the following naming structure:
    For example: 987654321-0-2017-03-06-r-00062.gz 

Please note the following conventions:

  • The unzipped files do not have any file extension, but use the same tsv format

  • There are up to 30 file parts per experiment per day (filepartnum = 0-29)

Complete instructions for Optimizely’s Data Export are available in our developer docs. If you have questions, please file a support ticket or contact your Customer Success Manager.

Currently, the Raw Data Event Export feature is available on select plans; please reach out to your Customer Success Manager if you wish to utilize this feature. If you do not have a CSM, submit a ticket to the developer support team to verify your plan and eligibility.


Why are you making these changes?
The changes are part of a project to enhance the performance and reliability of Data Export for Optimizely X, which we plan to roll out by July 2017.
When do these changes take place?
Event data for Optimizely X experiments will be available in both current and new AWS buckets till July 14, 2017. After July 14, event data will only be available in the new optimizely-export-ng bucket.
Should I expect any other changes between now and July 14, 2017?
We do not plan to make any other changes. However, if we do need to modify any of the migration steps, we will inform you by email.
Will I be able to access existing event data in the current AWS bucket?
Yes. All historical event data (before July 15, 2017) will continue to be available in the optimizely-export bucket.
Do I have to make any changes to my event data parsing process?
No. The event data format remains the same.
How can I automatically check when the event data is available for a given day?
A status file is provided to track the success or failure of that day's experiment event files. This file is named status.yaml and is included in the daily folder per project. Read our developer docs for more information.