Metacat 1 HZ <--> SystemMetadata <--> Metacat 2 HZ
port 5701 port 5701
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SystemMetadata SystemMetadata
/|\ /|\
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Batch Process HZ Client Batch Process HZ Client
port 5701 port 5701
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Batch Process 1 HZ <--> Distributed Executable <--> Batch Process 2 HZ
port 5702 port 5702