7.1.0 weird messages bad core before recovery

[Markus Jelsma]

Hello,

I just had a bad core that needed recovery after restart, first it told me this:

org.apache.solr.common.SolrException: Unable to locate core logs_shard1_replica1
        at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$5(CoreAdminOperation.java:150)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:384)
        at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler
        ....

then:

Error while trying to recover. 
core=logs_shard1_replica1:java.lang.NullPointerException
        at org.apache.solr.update.PeerSync.alreadyInSync(PeerSync.java:391)
        at org.apache.solr.update.PeerSync.sync(PeerSync.java:253)
        ....

and:

Recovery failed - trying again... (0)

Before finally starting recovery which was successful. Never seen it before, 
bug? Already fixed? 

Thanks,
Markus