@saranvisaThis health check result indicates that NodeManager is not getting enough heap space compared to its workload. Typically when workload grows in the cluster and thus the java daemon needs more heap, you need to give more heap to the Role. You could: 1. Increase the heap given to Node Manager through Node Manager's configuration page.('Java Heap Size of NodeManager in Bytes') 2. Alternatively, though not recommended, you could tune the threshold you found to tolerate higher GC ratio for Node Manager. I would recommend you go to the specific Node Manager's role instance page in Cloudera Manager, browse through the charts available for Node Manager, there would be a chart named 'JVM heap memory usage' telling you the heap consumption of the particular Node Manager. Then you can have a better idea of how much memory the Role is using and potentially increase the heap given to it to a higher value.
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