MapR File System Metrics
Every 10 seconds, the collectd service uses a MapR plugin to gather the following MapR File System metrics on each node in the cluster.
Name | Description |
---|---|
mapr.fs.bulk_writes | The number of bulk-write operations. Bulk-write operations occur when the primary MapR File System container aggregates multiple small file writes from one or more clients into one big RPC, before replicating the writes. |
mapr.fs.bulk_writesbytes | The amount of MB written by bulk-write operations. Bulk-write operations occur when the primary MapR File System container aggregates multiple small file writes from one or more clients into one big RPC, before replicating the writes. |
mapr.fs.kvstore_delete | The number of delete operations on key-value store files which are used by the CLDB and MapR Database. |
mapr.fs.kvstore_insert | The number of insert operations on key-value store files which are used by the CLDB and MapR Database. |
mapr.fs.kvstore_lookup | The number of lookup operations on key-value store files which are used by the CLDB and MapR Database. |
mapr.fs.kvstore_scan | The number of scan operations on key-value store files which are used by the CLDB and MapR Database. |
mapr.fs.local_readbytes | The amount of MB read by applications that are running on the MapR File System node where the data resides. |
mapr.fs.local_reads | The number of file read operations by applications that are running on the MapR File System node where the data resides. |
mapr.fs.local_writebytes | The amount of MB written by applications that are running on the MapR File System node where the data resides. |
mapr.fs.local_writes | The number of file write operations by applications that are running on the MapR File System node where the data resides. |
mapr.fs.read_bytes | The amount of data (in MB) read remotely. |
mapr.fs.read_cachehits | The number of cache hits for file reads. This value includes pages that MapR File System populates using the readahead mechanism. |
mapr.fs.read_cachemisses | The number of cache misses for file read operations. |
mapr.fs.reads | The number of remote reads. |
mapr.fs.statstype_create | The number of file create operations. |
mapr.fs.statstype_lookup | The number of lookup operations. |
mapr.fs.statstype_read | The number of file read operations. |
mapr.fs.statstype_write | The number of file write operations. |
mapr.fs.write_bytes | The amount of data (in MB) written remotely. |
mapr.fs.writes | The number of remote writes. |