Is it 'prestart' and 'go' events ?
----- Original Message -----
From: Jeremy I. McCormick <[log in to unmask]>
To: hps-software <[log in to unmask]>
Sent: Thu, 24 Oct 2013 04:38:44 -0400 (EDT)
Subject: null EVIO events in test run data
Hi,
I’m back to doing some work on the monitoring app, and I’m seeing something strange...
I have noticed that in the EVIO files for the test run, there are always a few events in the beginning of the run for which the EvioReader returns a null EvioEvent without throwing any kind of error. Since this class is a complete black box to me, I wonder if anyone can tell me why this might be happening? Does the problem sound familiar?
It seems I can simply skip over these problematic events without any adverse effects, but ideally this situation should result in an exception being thrown. I would like to be able to pre-check events for characteristics that will cause this problem and discard them if this is going to happen, but right now I can’t tell what exactly is going wrong.
For now, I’ll just have the app print a message to the log table.
Thanks.
—Jeremy
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