Storm Workers Layer
Using the tests associated with the Storm Workers layer (see Figure 1), you can monitor the following:
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Count of Executors in Workers node.
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Size of heap memory assigned to workers node.
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Size of off-heap memory assigned to workers node.
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Number of CPU cores assigned to workers node.
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Maximum time that the worker node has been up since its last reboot.
Figure 1 : The list of tests associated with the Storm Workers layer