[Tango-cs-bug-info] [tango-cs:bugs] #825 Event relative change filter does nothing

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Oct 27, 2016, 5:30:20 AM10/27/16

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[bugs:#825] Event relative change filter does nothing

Status: open
Created: Thu Oct 27, 2016 09:27 AM UTC by Johan Forsberg
Last Updated: Thu Oct 27, 2016 09:27 AM UTC
Owner: nobody

We have encountered an issue in the event system of TANGO 9. This behavior is not present in TANGO 8.

It can be reproduced as follows:

Start a TangoTest device
Set the "ampli" attribute to be polled and with a relative change of e.g. 10.
Connect a proxy to the device and subscribe to change events for "ampli"
An event will appear every 3 s (or whatever polling period was set) even though the value has not changed.

It makes no difference what I set as relative change, I always get no filtering at all if it is set. Absolute change works as expected.

The same thing happens for relative changes in archiving events.

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Nov 15, 2016, 11:42:01 AM11/15/16

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This problem appears as well with archive relative change events.
Fixed in svn in r30256.