Sporadic Presto DELETE and INSERT query failures can be observed due to some connection pool issue

Incident Report for Treasure Data

Resolved

This incident has been resolved.
Posted Aug 21, 2019 - 12:39 PDT

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Aug 21, 2019 - 12:21 PDT

Update

We are continuing to work on a fix for this issue.
Posted Aug 21, 2019 - 12:02 PDT

Identified

The issue has been identified and a fix is being implemented. The fix requires restarting the Presto Cluster. The Presto Clusters are restarted.
Posted Aug 21, 2019 - 11:24 PDT

Investigating

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
Posted Aug 21, 2019 - 11:23 PDT
This incident affected: US (Presto Query Engine).
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