Interface that allows storage of query-plan state, when different parts of query planning take place on different computers. For example, if some work is done on the query initiator node and some is done on each node executing the query.
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Interface that allows storage of query-plan state, when different parts of query planning take place on different computers. For example, if some work is done on the query initiator node and some is done on each node executing the query.
In addition to the functionality provided by PlanContext, NodeSpecifyingPlanContext allows you to specify which nodes the query should run on. This is used for UDLs.
ArrayList<String> com.vertica.sdk.PlanContext.getClusterNodes |
( |
| ) |
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inherited |
Get a list of all of the nodes in the current cluster, by node name
Get a read-only instance of the current context
ArrayList<String> com.vertica.sdk.NodeSpecifyingPlanContext.getTargetNodes |
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Return the set of nodes that this query is currently set to run on
Get the current context for writing
void com.vertica.sdk.NodeSpecifyingPlanContext.setTargetNodes |
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ArrayList< String > |
nodes | ) |
throws UdfException |
Change the set of nodes that the query is intended to run on. Throws if any of the specified node names is not actually the name of any node in the cluster.
- Exceptions
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