Branch 1 namenode - aajisaka/hadoop-metrics GitHub Wiki
- FilesCreated
- Total number of files/dirs created by create or mkdir operations
- FilesAppended
- Total number of files appended
- GetBlockLocations
- Total number of getBlockLocations operations
- FilesRenamed
- Total number of rename operations succeeded (NOT number of files/dirs renamed)
- GetListingOps
- Total number of directory listing operations
- CreateFileOps
- Total number of files created
- FilesDeleted
- Total number of files/dirs deleted
- DeleteFileOps
- Total number of delete operations
- FileInfoOps
- Total number of getFileInfo operations
- AddBlockOps
- Total number of addBlock operations succeeded
- Transactions_num_ops
- Total number of write operations to the edit log
- Transactions_avg_time
- Average time of write operations to the edit log in milliseconds
- Syncs_num_ops
- Total number of edit log syncs
- Syncs_avg_time
- Average time of edit log syncs in milliseconds
- JournalTransactionBatchedInSync
- Total number of write operations to the edit log batched in sync
- blockReport_num_ops
- Total number of processing block reports from DataNode
- blockReport_avg_time
- Average time of processing block reports in milliseconds
- SafemodeTime
- The interval between FSNameSystem starts and the last time safemode leaves in milliseconds
- fsImageLoadTime
- Time loading FS Image at startup in milliseconds
- FilesInGetListingOps
- Total number of files/dirs listed by directory listing operations
For more details, see org.apache.hadoop.hdfs.server.namenode.metrics.NameNodeInstrumentation.java