service.parquet

The Service file provides an overview of the whole simulation: how many hosts are available, and how many tasks are waiting, running and finished. service.parquet has one row per sample.

Column	Type	Unit	Description
timestamp	int64	ms	The time of the sample.
hosts_up	int32	count	The number of hosts that are up.
hosts_down	int32	count	The number of hosts that are down.
tasks_total	int32	count	The number of tasks submitted so far.
tasks_pending	int32	count	The number of tasks waiting to be scheduled.
tasks_active	int32	count	The number of tasks running.
tasks_completed	int32	count	The number of tasks that completed.
tasks_terminated	int32	count	The number of tasks that were terminated.
attempts_success	int32	count	The number of scheduling attempts that placed a task on a host.
attempts_failure	int32	count	The number of scheduling attempts that failed.