This incident has been resolved.

A fix has been implemented and we are monitoring the results.

We are continuing to work on a fix for this issue.

The issue has been identified and a fix is being implemented. The fix requires restarting the Presto Cluster. The Presto Clusters are restarted.

The symptom might look like :
com.facebook.presto.spi.PrestoException: Failed to rewrite partition
Killed by the system because this query stalled for more than 1.00h. This is usually caused by a bug of Presto. The query execution will be retried in several minutes.Please ask support@treasure-data.com if you need a further help for this query