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Bolt NameFunctionalityReferences
Enrichment Splitter This bolt extracts fields and values from a message that can be enriched and sends them to the appropriate enrichment bolt. The configuration for which fields have an associated enrichment is stored in Zookeper. 
Enrichment Bolt This bolt takes the enrichment information from the splitter bolt (key + value), extracts the value, cross references the value against the enrichment store, and then sends the value of the enrichment to the joiner bolt. There can be n enrichment bolts and each enrichment bolt has to be associated with a back end store (which is primarily Hbase). These bolts also use an in-memory cache so they don't thrash the back end reference store. There is a corresponding bulk loader provided per enrichment to be able to bootstrap the enrichment store 
Enrichment Joiner Bolt  
Threat Intel Splitter Bolt  
Threat Intel Bolt  
Threat Intel Joiner Bolt  
Writer Bolt  See Supported Data Stores for a list of available extensions