Metacat

Remove references to CNReplicationTask.

Remove the CNReplicationTask (for now). We will be using Metacat's ForceReplicationHandler to replicate science metadata across CNs, and may explore the use of a 100% evicted hzScienceMetadata map. Either way, the distributed task design won't be needed. When a dropped CN comes back online, we'll catch it up based on last modified dates for PIDs in the hzSystemMetadata map.

Add getNodesMap() to return the hzNodes map from the process cluster. Remove getPendingReplicationTasks since that structure is being removed. Add minor documentation.

lookup latest system metadata update date for use in synchronizing CN-CN when an offline nodes comes back online

changed the key type from Identifier to String for ObjectPathMap. (need a Comparable key).

rework this to be MN->MN replication. Should be fleshed out more.

throw RuntimeExceptions when store() methods throw declared exceptions -- we want callers to put() to be alerted if there are errors.

move CNReplicationTask to the hazelcast package

check if system metadata exists rather than just the id mapping (before creating the entry)

move bulk of the Hazelcast code into HazelcastService from CNodeService so that it is centrall located - easier to manage and configure