Drill Metrics
Every 10 seconds, the collectd service uses the plugin to gather the following Drill metrics on each node in the cluster.
Name | Description |
---|---|
mapr.drill.allocator_root_used | The amount of memory used in bytes by the internal memory allocator. |
mapr.drill.allocator_root_peak | The peak amount of memory used in bytes by the internal memory allocator. |
mapr.drill.blocked_count | The number of threads that are blocked because they are waiting for a monitor lock. |
mapr.drill.count | The number of live threads (including both daemon and non-daemon threads). |
mapr.drill.fd_usage | The ratio of used to total file descriptors. |
mapr.drill.fragments_running | The number of query fragments currently running in the drillbit. |
mapr.drill.heap_used | The amount of heap memory used in bytes by the JVM. |
mapr.drill.non_heap_used | The amount of non-heap memory used in bytes by the JVM. |
mapr.drill.queries_completed | The number of completed, canceled or failed queries for which this drillbit is the foreman. |
mapr.drill.queries_running | The number of running queries for which this drillbit is the foreman. |
mapr.drill.runnable_count | The number of threads executing in the JVM. |
mapr.drill.waiting_count | The number of threads that are waiting to be executed. This can occur when a thread must wait for another thread to perform an action before proceeding. |