Sigma Computing
All Systems Operational

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Welcome to Sigma Computing's home for operational status updates.

Sigma - Google Cloud (GCP) ? Operational
90 days ago
99.83 % uptime
Today
Sigma - AWS ? Operational
90 days ago
99.95 % uptime
Today
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.
app.sigmacomputing.com - uptime
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Past Incidents
Jan 29, 2023

No incidents reported today.

Jan 28, 2023
Resolved - We have identified the root cause and resolved the issue causing performance degradation on BigQuery connections.
Jan 28, 00:44 UTC
Update - Monitoring: mitigations have been deployed and we are seeing improved performance in BigQuery connections.
Jan 27, 22:02 UTC
Update - We are continuing to investigate this issue.
Jan 27, 21:14 UTC
Investigating - Users with BigQuery Connections are experiencing long query times and timeouts. We are aware of the issue and actively working to mitigate it.
Jan 27, 20:59 UTC
Jan 27, 2023
Resolved - The direct impact and side-effects from the earlier Snowflake incident have now all been resolved.
Jan 27, 00:45 UTC
Update - The errors that were being encountered when trying to load Usage tables in the Administration section are now no longer occurring.

Snowflake Incident: some Snowflake users are reporting long query times and timeouts as still occurring, but these may be isolated incidents. We are continuing to investigate these.

Jan 27, 00:09 UTC
Update - Snowflake Incident: Snowflake has declared the incident as being resolved on their end, however side-effects from it are still being experienced and we are actively investigating these:

All Sigma users may still encounter errors when trying to load Usage tables in the Administration section.
Some Snowflake users are reporting long query times and timeouts as still occurring.

Jan 26, 22:58 UTC
Monitoring - Snowflake Incident: Users who have their Snowflake warehouses hosted in the AWS-West (Oregon) region may be unable to execute queries due to an issue in Snowflake. We are closely monitoring this. You can subscribe to Snowflake's status page for updates here: https://status.snowflake.com/incidents/xr2j1b6hf46c

As a side-effect of this, all Sigma users may encounter errors when trying to load Usage tables in the Administration section.

Jan 26, 19:15 UTC
Jan 26, 2023
Jan 25, 2023

No incidents reported.

Jan 24, 2023

No incidents reported.

Jan 23, 2023

No incidents reported.

Jan 22, 2023

No incidents reported.

Jan 21, 2023

No incidents reported.

Jan 20, 2023

No incidents reported.

Jan 19, 2023

No incidents reported.

Jan 18, 2023

No incidents reported.

Jan 17, 2023
Postmortem - Read details
Jan 26, 01:39 UTC
Resolved - Current status: Our engineers have implemented mitigation measures to circumvent the issue. We have closely monitored their effect and confirmed with affected users that the issue has been resolved.

Customer experience: We expect Sigma users hosted on AWS to no longer encounter a high rate of errors when performing regular operations.

Incident start time: Approximately 19:45 UTC January 17, 2023

Incident end time: Approximately 21:25 UTC January 17, 2023

We will perform a root cause analysis (RCA) and publish our findings in a postmortem note to the Sigma Community site in coming days. You will receive an email notification when that occurs.

Jan 17, 21:26 UTC
Monitoring - Current status: Our engineers have implemented mitigation measures to circumvent the issue and we are monitoring their effect closely.

Customer experience: We expect the rate of errors to decrease for all Sigma users hosted on AWS.

Incident start time: Approximately 19:45 UTC January 17, 2023

Incident end time: Approximately 21:25 UTC January 17, 2023

Jan 17, 21:25 UTC
Identified - Current status: Our engineers have identified the root cause for the issue and are developing mitigation measures to circumvent it.

Customer experience: Users in Sigma organizations hosted on AWS are experiencing increased error rates when performing regular operations.

Incident start time: Approximately 19:45 UTC January 17, 2023

Jan 17, 20:40 UTC
Investigating - Users in Sigma organizations hosted on AWS are experiencing increased error rates when performing regular operations. We are treating this as our highest priority issue and our engineers are actively investigating. We expect this issue to be transitory. Our apologies for any inconvenience caused.
Jan 17, 19:45 UTC
Jan 16, 2023
Resolved - For organizations that have OAuth authentication enabled, OAuth tokens need to be passed to the warehouse as part of their query authorization flow. A code change exposed a bug in our backend that handles OAuth token transit between our microservices. As a result, OAuth tokens were not being sent to the warehouse correctly. To mitigate this, we rolled back the offending code change and subsequently resolved the root cause of the bug itself.

Incident start time: 16:44 UTC January 16, 2023
Incident end time: 20:19 UTC January 16, 2023

Jan 16, 16:30 UTC
Jan 15, 2023

No incidents reported.