Ongoing Tasks - General Info
- Ongoing tasks are work tasks defined for the database.
- Once defined, these tasks are ongoing, meaning that they will do the defined work for any data change in the database.
- Each task has a responsible node from the Database Group nodes, this node will actually perform the defined task work.
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The available ongoing tasks are:
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External Replication
- Create a live copy of one database in another RavenDB database
- This replication is initiated by a node in the source database group
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Hub/Sink Replication Tasks
- Create a live copy of a database or a part of it in another RavenDB database
- The replication is initiated by the sink task
- The replication can be bidirectional or limited to a single direction
- The replication can be filtered to allow the delivery of selected documents
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RavenDB ETL
- Write all database documents, or just part of it, to another RavenDB database
- Data can be filtered and modified with transformation scripts
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SQL ETL
- Write the database data to a relational database
- Data can be mutated with transformation scripts
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Backup
- Schedule a backup or a snapshot of the database at a specified point in time
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Subscription
- Sending batches of documents that match a pre-defined query for processing on a client
- Data can be mutated with transformation scripts
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External Replication
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In this page:
Ongoing Tasks - View
Ongoing Tasks List for databases DB1
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The list of the current tasks on the database
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Task name & state:
- Active - Task is active and will do its job when there is a change to the database
- Not-Active - Task is defined but has been disabled
- Not on Node - The node in the currently viewed tab is not responsible for performing the task
- Reconnect - Destination is unavailable, the task is active and trying to reconnect
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The node that is currently responsible for doing the task
- If not specified by the user, the cluster decides which node will actually be responsible for the task
- If a node is down, the cluster will reassign the work to another node for the duration
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Tasks graph view
Ongoing Tasks - Actions
Ongoing Tasks - Actions
- Add Task - Create a new task for the database - see below
- Details - Click for a short task details summary in this view
- Enable / Disable the task
- Edit - Click to edit the task
- Delete the task
- Full screen - Click to see the graph in a full-screen mode
Ongoing Tasks - Add New Task
Add Ongoing Task
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Select the preferred task to add
- adding an Extrenal Replication task
- adding a Replication Hub task
- adding a Replication Sink task
- adding a RavenDB ETL task
- adding an SQL ETL task
- adding a Backup task
- adding a Subscription task
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Once the task is defined and saved, it will be written to the Database Record
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The cluster will decide which node will actually be responsible for doing the task - see Members Duties