DSpace 5.6 Solr statistics export hanging

[David Tolmie]

My organization is in the process of upgrading from 5.6 to 7.6.1. As we test the upgrade process, we've discovered solr-export-statistics after initial execution ceases using any CPU and just silently hangs. We've let it sit well over an hour trying to export from a very small shard and also off the default statistics core. Nothing is written to the export directory.

Has anyone else run into this? Any suggestions?

Thanks,

-Dave