When running LogCleanupCommand with olderThan parameter, the following SQL is issued.

• NodeInstanceLog

  delete from NodeInstanceLog where log_date<=? and 
     (processInstanceId in (select processins1_.processInstanceId from ProcessInstanceLog processins1_ where processins1_.status in (2 , 3)))
  

• VariableInstanceLog

  delete from VariableInstanceLog where log_date<=? and 
     (processInstanceId in (select processins1_.processInstanceId from ProcessInstanceLog processins1_ where processins1_.status in (2 , 3)))
  

• ProcessInstanceLog

  delete from ProcessInstanceLog where (status in (2 , 3)) and end_date<=?
  

Therefore, it's possible that a part of NodeInstanceLog/VariableInstanceLog are deleted

if NodeInstanceLog.log_date/VariableInstanceLog.log_date is older than the date calculated based on olderThan date

and

If ProcessInstanceLog.end_date is later than the date calculated based on olderThan date

In addition, RequestInfo, ErrorInfo, ExecutionErrorInfo are deleted regardless of existence of corresponding ProcessInstanceLog.

Customer expects that

• When olderThan is specified, at first identify the target ProcessInstanceId whose ProcessInstanceLog.end_date is older than the specified date, and then delete corresponding ProcessInstanceLog, NodeInstanceLog, VariableInstanceLog, RequestInfo, ErrorInfo and ExecutionErrorInfo.

e.g.

delete from NodeInstanceLog where ProcessInstanceId in (select processins1_.processInstanceId from ProcessInstanceLog processins1_ where processins1_.status in (2 , 3) and processins1_.end_date <= ?);

• Regarding RequestInfo, ErrorInfo, ExecutionErrorInfo, if these does not relate to the specific process, delete these if these date is older than specified date.