Collector Type: Agent
Collector Type: Agent
Category: Application Monitors
Application Name: HDFSNameNode
Global Template Name: LINUX Hadoop HDFS NameNode Template
Introduction
The NameNode is the centerpiece of an HDFS file system are kept. The directory tree of all files in the file system, and tracked across the cluster where the file data is kept. It does not store the data of these files itself.
Prerequisite
For Virtual Machines, install the Linux Agent.
Parameters
| Name | Default Value |
|---|---|
| Host IP Address The host on which HDFS is running. | 127.0.0.1 |
| NameNodePort The port on which HDFS NameNode is running. | 50070 |
Note: All field attributes are mandatory, use default values wherever applicable.
Collected Metrics
| Metric Name | Display Name |
|---|---|
| hdfs.namenode.capacity_total Total disk capacity in bytes. | HDFS Namenode CapacityTotal |
| hdfs.namenode.capacity_used_percent Disk usage in Percent. | HDFS Namenode CapacityUsedPercent |
| hdfs.namenode.nondfs_used_percent Total space used by NonDfs in Percentage. | HDFS Namenode NonDfsUsedPercent |
| hdfs.namenode.capacity_remaining_percent Remaining disk space left in Percent. | HDFS Namenode CapacityRemainingPercent |
| hdfs.namenode.blocks_total Total number of blocks. | HDFS Namenode BlocksTotal |
| hdfs.namenode.files_total Total number of files. | HDFS Namenode FilesTotal |
| hdfs.namenode.num_live_data_nodes Total number of live data nodes. | HDFS Namenode NumLiveDataNodes |
| hdfs.namenode.num_dead_data_nodes Total number of dead data nodes. | HDFS Namenode NumDeadDataNodes |
| hdfs.namenode.num_failed_data_nodes Total number of failed data nodes. | HDFS Namenode NumFailedDataNodes |
| hdfs.namenode.total_load Total load on the file system. | HDFS Namenode TotalLoad |
| hdfs.namenode.max_objects Maximum number of files HDFS supports. | HDFS Namenode MaxObjects |
| hdfs.namenode.pending_replication_blocks Number of blocks pending replication. | HDFS Namenode PendingReplicationBlocks |
| hdfs.namenode.under_replicated_blocks Number of under replicated blocks. | HDFS Namenode UnderReplicatedBlocks |
| hdfs.namenode.scheduled_replication_blocks Number of blocks scheduled for replication. | HDFS Namenode ScheduledReplicationBlocks |
| hdfs.namenode.pending_deletion_blocks Number of pending deletion blocks. | HDFS Namenode PendingDeletionBlocks |
| hdfs.namenode.num_decom_live_data_nodes Number of decommissioning live data nodes. | HDFS Namenode NumDecomLiveDataNodes |
| hdfs.namenode.num_decom_dead_data_nodes Number of decommissioning dead data nodes. | HDFS Namenode NumDecomDeadDataNodes |
| hdfs.namenode.num_decommissioning_data_nodes Number of decommissioning data nodes. | HDFS Namenode NumDecommissioningDataNodes |
| hdfs.namenode.num_stale_data_nodes Number of stale data nodes. | HDFS Namenode NumStaleDataNodes |
| hdfs.namenode.num_stale_storages Number of stale storages. | HDFS Namenode NumStaleStorages |
| hdfs.namenode.volume_failures_total Total volume failures. | HDFS Namenode VolumeFailuresTotal |
| hdfs.namenode.estimated_capacity_lost_total Estimated capacity lost in bytes. | HDFS Namenode EstimatedCapacityLostTotal |
| hdfs.namenode.missing_blocks Number of missing blocks. | HDFS Namenode MissingBlocks |
| hdfs.namenode.corrupt_blocks Number of corrupt blocks. | HDFS Namenode CorruptBlocks |