property. For instance: regex=(.*foo.*) Only the line matching the regex will be sent to the dispatcher. For instance, instead of the log collector, you can create the following etc/org test, the line will be parsed as follows (the file collector will send the following data to the dispatcher): first->this second->is third->a fourth->test If the keys configuration is not set, then key-0 here, the line will be parsed as follows (the file collector will send the following data to the dispatcher): key-0->test It’s also possible to use keys to identify each regex group. To use this parser

filter /* <dispatcher>FORWARDdispatcher> <dispatcher>INCLUDEdispatcher> <dispatcher>REQUESTdispatcher> com Event Handler is the processor which processes remote events received through the topic. • Event Dispatcher is the unit which decides which event should be processed by which event handlers. • Command node has a listener registered on that topic and gets/sends all events to the event dispatcher. When the Event Dispatcher receives an event, it looks up an internal registry (in our case the OSGi Service

Worker3 Producer Consumer Job queue Dispatcher Modified Producer and Consumer Pattern • Non blocking for producers • Dispatcher queues jobs • Dispatcher distributes jobs to available workers • Workers capacity) • Send: ch <- v • Receive: v:= <- ch • Used to block or unblock threads • Dispatcher thread ( producer) • Worker thread (consumer) • Also used for stopping a job Worker Pool • Predefine l.go Workers Wait for Replication Job • Channel w.RepJobs blocked until a job is dispatched Dispatcher • Receives job and distributes to available worker • Channel WorkerPool.workerChan is blocked

Event Handler The processor which processes remote events received through the topic. • Event Dispatcher The unit which decides which event should be processed by which event handlers. • Command A special node has a listener registered on that topic and gets/sends all events to the event dispatcher. When the Event Dispatcher receives an event, it looks up an internal registry (in our case the OSGi Service

SLA alerters consume from these topics. Decanter uses EventAdmin topics as monitoring events dispatcher. Collectors, appenders, and alerters are simple OSGi services exposed by different bundles. It implementing SynchronousBundleListener interface: You can see here the usage of the OSGi EventAdmin as dispatcher: the collector creates a data map, and send it to a decanter/collect/bundle topic. We just need

ID and the topic information of the subscription. NewHubClient(string, []mqtt.TopicInfo) (*mqtt.Dispatcher, error) // returns logger interface Log() logger.Logger // check running mode IsNative() bool // check funclog has the following error message: level=error msg=”failed to create new client” dispatcher=mqtt error=”dial tcp 0.0.0.0:1883:con- nect:connection refused” Suggested Solution: If you are

ID and the topic information of the subscription. NewHubClient(string, []mqtt.TopicInfo) (*mqtt.Dispatcher, error) // returns logger interface Log() logger.Logger // check running mode IsNative() bool // check funclog has the following error message: level=error msg=”failed to create new client” dispatcher=mqtt error=”dial tcp 0.0.0.0:1883:connect:connection refused” Suggested Solution: If you are using

ID and the topic information of the subscription. NewHubClient(string, []mqtt.TopicInfo) (*mqtt.Dispatcher, error) // returns logger interface Log() logger.Logger // check running mode IsNative() bool // check funclog has the following error message: level=error msg=”failed to create new client” dispatcher=mqtt error=”dial tcp 0.0.0.0:1883:connect:connection refused” Suggested Solution: If you are using

ID and the topic information of the subscription. NewHubClient(string, []mqtt.TopicInfo) (*mqtt.Dispatcher, error) // returns logger interface Log() logger.Logger // check running mode IsNative() bool // check funclog has the following error message: level=error msg=”failed to create new client” dispatcher=mqtt error=”dial tcp 0.0.0.0:1883:con- nect:connection refused” Suggested Solution: If you are

plugin.lineage. dispatchers. Get Lineage Events from SparkListener When using the SPARK_EVENT dispatcher, the lineage events will be sent to the SparkListenerBus. To handle lineage events, a new SparkListener Release 1.9.0-SNAPSHOT Get Lineage Events from Kyuubi EventHandler When using the KYUUBI_EVENT dispatcher, the lineage events will be sent to the Kyuubi EventBus. Refer to Kyuubi Event Handler to handle Entities to Apache Atlas The lineage entities can be ingested into Apache Atlas using the ATLAS dispatcher. Extra works: • The least transitive dependencies needed, which are under ./extensions/spark