I set up Solr Replication. I have one master on a server, one slave on another server. The replication of data appears functioning correctly. The issue is when the master SOLR tries to create a snapshot backup it gets a null pointer exception.
org.apache.solr.handler.SnapShooter createSnapshot method calls org.apache.solr.handler.SnapPuller.delTree(snapShotDir); at line 162 and the exception happens within org.apache.solr.handler.SnapPuller at line 1026 because snapShotDir is null.
Here is the actual log output:
58319963 [qtp12610551-16] INFO org.apache.solr.core.SolrCore - newest commit generation = 349
58319983 [Thread-19] INFO org.apache.solr.handler.SnapShooter - Creating backup snapshot...
Exception in thread "Thread-19" java.lang.NullPointerException
I may have missed how to set the directory in the documentation but I've looked around without much luck. I thought the process was to use the same directory as the index data for the snapshots. Is this a known issue with this release or am I missing how to set the value? If someone could tell me how to set snapshotdir or confirm that it is an issue and a different way of backing up the index is needed it would be much appreciated.