Keboola Status

Update 18:16 UTC: We're still seeing degraded performance in Snowflake in US region and we're investigating with Snowflake support. Next update in 2 hours.

Update 20:22 UTC: We are working with snowflake on reducing the queueing in our warehouse. We had to pause jobs execution at 20:00 UTC to reduce the influx of queries. When the queue is worked through we'll reenable the jobs.

Update 20:51 UTC: We reenabled the paused job queue with limited throughput and we're monitoring the Snowflake queue closely. So far we see no queueing. Next update in 2 hours. 

Update 22:21 UTC: Job queue is running at full capacity and there are no queries waiting in Snowflake warehouse. Preliminary analysis suggests that the issue was probably caused by a congestion in Snowflake's Cloud Service Layer, but it took Snowflake team some time to find out the root cause and fix it. Some jobs were delayed and some queries timed out resulting in job failures. Those jobs will need to be restarted. We're sorry for the problems this might have caused.

Monday, 20 April 2020 07:39:02 UTC: We're seeing degraded performance of Snowflake in EU region, we're investigating the cause with Snowflake. Next update in 1 hour.

In the early morning Snowflake had an incident in their US West region which caused a large backlog of job processing in Keboola's US Region.  The jobs were all eventually processed, but they may have taken much longer than what you normally experience.

The buildup in our queue began just before 2:00AM CEST and started to ease after 4:30AM  CEST.

Please refer to the above link for further information, and we will add a link to the RCA when it becomes available.

Summary

Between March 30, 20:58 UTC and March 31, 6:15 UTC, some transformation jobs failed with an internal error. About 2% of all transformation jobs were affected. We sincerely apologize for this incident.

What Happened?

On March 30 at 20:58 UTC, we deployed a new version of the Transformation service which contained updated Snowflake ODBC drivers. The update was enforced by Snowflake as a security update patch. Unfortunately, the new version of the driver contained a critical bug which caused the driver to crash when some queries were running longer than one hour. This led to failed transformation jobs.

What Are We Doing About This?

We now treat all driver updates as major updates. This means they go through more careful deployment and monitoring so that we can detect possible problems faster. In the long term, we're working with Snowflake to update drivers in a more controlled manner.

We are currently investigating an increased error rate from snowflake in the US region from approximately 10:00PM CEST.

We will update here as soon as we know more.

UPDATE 11:05 PM CEST: We are handling the issue with Snowflake support. So far all Snowflake operations in US region seem to be failing. Next update at 11:30 PM or sooner if there are any new information or situation changes.

UPDATE 11:30 PM CEST: Snowflake rolled back the release they made today and everything has returned to working condition.

UPDATE 12:00 PM CEST: We're very sorry for this inconvenience. The error started at 12:58 PST (19:58 PM UTC) and lasted until 14:24 PST (21:24 PM UTC). All new Snowflake connections in the US (including those from your DB clients) were failing during the period.

Unfortunately you will need to restart any failed jobs or orchestrations from this time period.

EU region was not affected by this issue.

A scaling script running at 12:00 AM CEST failed to scale up the Snowflake warehouse in EU region. All storage and transformation jobs in the EU were affected by this issue and were significantly slower than usual. 

To help process the queued load we have scaled up the warehouse at 9:45 AM CEST and will keep it running until all load is processed.

We're sorry for this inconvenience and we'll be implementing safeguards to prevent this from happening again. 

We are investigating decreased performance of Snowflake in EU region which unfortunately reoccured after previous resolutions. We are in touch in with Snowflake support. Job performance and sandbox loading times may be affected. Next update at 12:30pm UTC.

Update 12:30 UTC: We are handling the performance issue with Snowflake support, we've offset the slowdown by scaling up the cluster. We'll have more information in about an hour. We caught the issue early on, so we hope it will have minimal impact on jobs, apart from a small slowdown. So far we've seen 3 job failures because of this across the whole EU region. We'll post another update at 14:30 UTC or sooner if there are any new information or situation changes. 

Update 14:30 UTC: We are still working with Snowflake on resolving the issue. The situation is currently stable and we did not see any jobs failing since the last update. Our main goal is currently to mitigate the issue before the midnight job surge. Next update in 18:30 UTC or sooner if there are any new information or situation changes. 

Update 18:15 UTC: We are still working on mitigating the slowdown. We've seen only 3 related job failures since last update, so we still consider the situation stable. We think that the issue will be resolved in the following hour.

Update 19:30 UTC: We're monitoring the situation and the performance is improved and close to previous values. We should have fresh aggregated monitoring data an aprroximately 15 minutes and we expect them to show complete recovery to the standard performance. 

Update 20:01 UTC: The issue has been resolved. 

Summary

CSV file "XXX" file name is not a valid table identifier, either set output mapping for "XXX" or make sure that the file name is a valid Storage table identifier. 

What Happened?

What Are We Doing About This?

Today we have released a version of Generic extractor in which a bug was present. It caused certain specific configurations to fail with the error:

CSV file XXX file name is not a valid table identifier, either set output mapping for XXX or make sure that the file name is a valid Storage table identifier. 

We have reverted the release. We sincerely apologize for the error. We will publish a postmortem next week.

There are some problems causing errors of Orchestrations API responses in EU region. We are investigating and will give here more details in under an hour.

UPDATE Apr 2 11:32 CEST - The errors stopped occurring by now. We are watching it and investigating the root cause.

UPDATE Apr 2 12:05 CEST - We've found out that API servers were flooded with some unexpected requests bursts. We've upgraded the infrastructure and will find a way how to prevent such a situation for next time.