Users can manage Storm topologies on the Storm WebUI. Users in the storm group can manage only the topology tasks submitted by themselves, while users in the stormadmin group can manage all topology tasks.
Click Activate to activate the topology.
Click Deactivate to deactivate the topology.
Click Rebalance and specify the wait time (in seconds) of re-deployment. Generally, if the number of nodes in a cluster changes, the topology can be re-deployed to maximize resource usage.
Click Kill and specify the wait time (in seconds) of the deletion.
Click Debug. In the dialog box that is displayed, specify the percentage of the sampled data volume. For example, if the value is set to 10, 10% of data is sampled.
To stop sampling, click Stop Debug.
This function is available only when the sampling function is enabled during topology submission. For details about querying data processing information, see Querying Data Processing Logs of the Topology.
Click Change Log Level to specify the new log level.
In the Topology Visualization area, click Show Visualization to visualize the topology.