[SOLR-9359] Listener added using Config API results in ClassCastException in the logs

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.0.1
• Fix Version/s: 9.1, main (10.0)
• Component/s: config-api

Environment

SolrClound on Windows with ZooKeeper 3.4.8

• Assignee: Eric Pugh
• Reporter: Alex D
• Created: 29/Jul/16 15:02
• Updated: 10/Jan/23 20:45
• Resolved: 08/Aug/22 14:54

Description

Adding a listener using the Config API results in an exception in the logs even if the call to the API was successful.

Command used to add the listener:

curl -k -u admin:admin https://solrserver:8443/solr/customer/config -H 'Content-type:application/json' -d '{ "add-listener": {"event":"firstSearcher","class":"solr.QuerySenderListener","name":"f7fb2d87bea44464af2401cf33f42b69","queries":[

{"q":"static firstSearcher warming in solrconfig.xml"}

]} }'

Result:
{
"responseHeader":

{ "status":0, "QTime":117}

,
"WARNING":"This response format is experimental. It is likely to change in the future."}

In the Admin UI Logging section I can see the following error:
SolrCore null:java.lang.ClassCastException

The log files does not provide additional information.

Issue Links

• links to: GitHub Pull Request #875
• links to: GitHub Pull Request #2643