Possible reduced network throughput and query stalls in virtualized environment

Detail name	Value
Changelog Number	23048
Type	Bug
Status	Open
Affected Versions	Exasol 7.1.0

Description

Under rare circumstances, lost signals to mutex conditions can lead to a reduction of network throughput of queries as well as prolonged query runtimes. The effects are very rare but special hardware setups like virtual machines can make the stalls occur somewhat frequent.

Workaround

There is no explicit workaround. Reducing the number of available CPU cores (via VM) can help to avoid the issue.

Fix

Query performance is stable and back to the normal level.