If I cut off the master pc during the redundancy test, data loss occurs while it is being cut, and an error such as the picture appears, so please tell me how to solve it
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(Side note--Ignition redundancy does not ensure no data loss during changeover to the backup, and certainly not if the database is on the same machine as either gateway. Database redundancy is not provided by IA at all.)
java.lang.Exception: Error running query:
TagHistory(paths=[histprov:NewConnection:/prov:default:/tag:tags/s0-s5000/s1], start=Thu Dec 28 08:22:45 KST 2023, end=Thu Dec 28 08:30:45 KST 2023, flags=0)@1000ms
On: Main Window.Root Container.Easy Chart
at com.inductiveautomation.factorypmi.application.gateway.QueryManager$QueryExecutor.run(QueryManager.java:311)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: No session found. You must re-login. (QueryTagHistory)
at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.newGatewayException(GatewayInterface.java:360)
at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.sendMessage(GatewayInterface.java:334)
at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.runTagHistoryQuery(GatewayInterface.java:802)
at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.runTagHistoryQuery(GatewayInterface.java:770)
at com.inductiveautomation.factorypmi.application.gateway.GwiTagHistoryProvider.query(GwiTagHistoryProvider.java:16)
at com.inductiveautomation.ignition.common.sqltags.history.cache.TagHistoryCache.query(TagHistoryCache.java:211)
at com.inductiveautomation.factorypmi.application.gateway.TagHistoryQuery.execute(TagHistoryQuery.java:34)
at com.inductiveautomation.factorypmi.application.gateway.QueryManager$Query.execute(QueryManager.java:668)
at com.inductiveautomation.factorypmi.application.gateway.QueryManager$QueryExecutor.run(QueryManager.java:308)
... 1 more
Ignition v8.1.34 (b2023112816)
Java: Azul Systems, Inc. 17.0.8
The above and details show an error
Interesting. Looks like a bug. (The historian RPC not cooperating with failover.) You should report this to support. (This forum is not support.)