Occasional abort upon process shutdown

Detail name	Value
Changelog Number	6011
Type	Bug
Status	Resolved
Affected Versions	EXASolution 5.0.21
Fix Versions	EXASOL 6.0.7
Resolution Date	2018-04-17

Description

In some rare cases internal crashes occur in the cleanup phase of a database process, after the respective client has disconnected.
No user activities are affected, but EXAoperation logs a message like the following:

controller-st(0.2): Process exited: SqlProcess 82.2 exited after signal 6.

Occurrence rate

This bug occurs extremely seldom.

Workaround

Since the crash happens after all queries have finished running, no workaround is necessary (and none exists).