Branch 1 datanode - aajisaka/hadoop-metrics GitHub Wiki
- bytes_written
- Total number of bytes written to datanode
- bytes_read
- Total number of bytes read from datanode
- blocks_written
- Total number of blocks written to datanode
- blocks_read
- Total number of blocks read from datanode
- blocks_replicated
- Total number of blocks replicated
- blocks_removed
- Total number of blocks removed
- blocks_verified
- Total number of blocks verified
- block_verification_failures
- Total number of block verification failures
- blocks_get_local_pathinfo
- Total number of operations to get local pathnames of blocks
- reads_from_local_client
- Total number of read operations from local client
- reads_from_remote_client
- Total number of read operations from remote client
- writes_from_local_client
- Total number of write operations from local client
- writes_from_local_client
- Total number of write operations from remote client
- readBlockOp_num_ops
- Total number of read operations
- readBlockOp_avg_time
- Average time of read operations in milliseconds
- writeBlockOp_num_ops
- Total number of write operations
- writeBlockOp_avg_time
- Average time of write operations in milliseconds
- blockChecksumOp_num_ops
- Total number of blockCheckSum operations
- blockChecksumOp_avg_time
- Average time of blockCheckSum operations in milliseconds
- copyBlockOp_num_ops
- Total number of block copy operations
- copyBlockOp_avg_time
- Average time of block copy operations in milliseconds
- replaceBlockOp_num_ops
- Total number of block replace operations
- replaceBlockOp_avg_time
- Average time of block replace operations
- heartBeats_num_ops
- Total number of heartbeats
- heartBeats_avg_time
- Average heartbeat time in milliseconds
- blockReports_num_ops
- Total number of block report operations
- blockReports_avg_time
- Average time of block report operations in milliseconds
For more details, see org.apache.hadoop.hdfs.server.datanode.metrics.DataNodeInstrumentation.java