What action triggered the stacktrace? The stacktrace is from deep within Spring and suggests system level issue, e.g. out of memory. A few things to check: - server log (/var/log/cloudera-scm-server/cloudera-scm-server.log) - management daemon logs (/var/log/cloudera-scm-firehose/*.log - check "Hosts"->"All Hosts" for memory pressure. The "Resources" tab of individual Host page may help as well  ... View more

It looks like you have arrived in an inconsistent state of wanting the parcel to be activated, but it is not distributed, most likely because the distributed parcels were deleted outside of Cloudera Manager.   To fix this, I presume that UI is stuck in "Activating" state, but there should be a "Cancel" button, that should reset your state so that you can distribute again. If there is no way to cancel, for whatever reason, you can force deactivate the parcel via API. http://cloudera.github.io/cm_api/apidocs/v6/path__clusters_-clusterName-_parcels_products_-product-_versions_-version-_commands_deactivate.html ... View more