Do Handles change during EMA Failover?

mzmuda33

I understand that a Channelset can be used to handle failover in EMA.

I was wondering, in the case of failover, will all open items (ie connections to stream market data) automatically reconnect?

If so, will the item/instrument handles change?

zoya faberov

Hello @mzmuda33 ,

EMA implements "Single Open" approach. Please see EMA RDM Usage Guide -> Single Open for a description, upon the reconnect, EMA recovers open items, and they should have the same handles, so when the subscription is no longer needed, the consumer can unregister from the subscription.

Gurpreet

Hi @mzmuda33,

No the item handle does not change when the failover happens. EMA will automatically subscribe to all the instruments on your behalf when using Channel Set.