Detection Server FileReader restarts excessively

Products

• Data Loss Prevention Enterprise Suite

Issue/Introduction

FileReader on one DLP Detection Server never starts. It's stuck in the 16 minute timeout loop.
All other Detection servers restart services successfully.


Boxmonitor_Operational logs show:
Process [FileReader] has not responded for 16 minute(s) 0 ms

FileReader0.log shows:
com.vontu.detection.license.MonitorLicenseConfigSourceObserver start
INFO: Waiting for license
com.vontu.communication.transport.ConnectWrapperOperation select
INFO: read op select failed
com.vontu.communication.transport.ChannelManager processOperationResult
INFO: Operation com.vontu.communication.transport.ConnectWrapperOperation:1656340828340:boxmonitor:controller-server:x.x.x.x:8100:com.vontu.communication.transport.SessionIdentifier@58926e failed with exception: com.vontu.communication.transport.exception.TransportException: remote endpoint closed connection

BoxMonitor logs show a timeout operation:
com.vontu.communication.transport.ChannelManager processOperationResult
INFO: Operation com.vontu.communication.transport.AcceptWrapperOperation:1656342096112:null:com.vontu.communication.transport.SessionIdentifier@2884e5ce failed with exception: com.vontu.communication.transport.exception.OperationTimeoutException

Even after increasing the acceptTimeout in Communication.properties, the same messages repeat in the logs.

Environment

Data Loss Prevention 15.7 MP1

Cause

Communication with Enforce was not processing successfully

Resolution

Restarting services on the Enforce Server corrected the communications. FileReader starts successfully on the Detection server.