Hello. i after loading the nodes in a graph using the Nebula Importer, i issued a simple query where i just want to get count of the nodes, and i see various errors: 1. [ERROR (-1005)]: Storage Error: RPC failure, probably timeout. ~ for this i commented out the property : --storage_client_timeout_ms=60000 , then i got the error " Used memory hits the high watermark(0.800000) of total system memory" i changed the threshold from 0.8 to 0.9, then again i get the same RPC Failure again .. any guidance on this?

You can use submit job stats, ref: https://docs.nebula-graph.io/3.8.0/3.ngql-guide/4.job-statements/#submit_job_stats

not sure i understood this, what will i get doing this?

like this: https://docs.nebula-graph.io/3.8.0/3.ngql-guide/7.general-query-statements/6.show/14.show-stats/