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- Updates and Announcements
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- Operation Guide
- Configure Cluster
- Managing Cluster
- Managing Service
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- Restarting Service
- Resetting WebUI Password
- Software WebUI Entry
- Operation Guide for Access to WebUI over Private Network
- Service Monitoring
- Role Management
- Configuration Management
- Configuration Rollback
- Managing Configuration Groups
- YARN Job Query
- Impala Query Management
- YARN Resource Scheduling
- Service Operation
- HBase Table-Level Monitoring
- Component Health Status
- Component Configuration Sharing
- Managing Resources
- Monitoring and Alarming
- Cluster Overview
- Log Search
- Alarm Configurations
- Cluster Event
- Alarm Records
- Cluster Inspection
- Monitoring Metrics
- Node Monitoring Metrics
- HDFS Monitoring Metrics
- YARN Monitoring Metrics
- ZooKeeper Monitoring Metrics
- HBase Monitoring Metrics
- Hive Monitoring Metrics
- Spark Monitoring Metrics
- Presto Monitoring Metrics
- ClickHouse Monitoring Metrics
- Druid Monitoring Metrics
- Kudu Monitoring Metrics
- Alluxio Monitoring Metrics
- PrestoSQL Monitoring Metrics
- Impala Monitoring Metrics
- Ranger Monitoring Metrics
- COSRanger Monitoring Metrics
- Doris Monitoring Metrics
- Kylin Monitoring Metrics
- Zeppelin Monitoring Metrics
- Oozie Monitoring Metrics
- Storm Monitoring Metrics
- Livy Monitoring Metrics
- Kyuubi Monitoring Metrics
- EMR Development Guide
- Hadoop Development Guide
- HDFS Common Operations
- HDFS Federation Management Development Guide
- HDFS Federation Management
- Submitting MapReduce Tasks
- Automatically Adding Task Nodes Without Assigning ApplicationMasters
- YARN Task Queue Management
- Practices on YARN Label Scheduling
- Hadoop Best Practices
- Using API to Analyze Data in HDFS and COS
- Dumping YARN Job Logs to COS
- Spark Development Guide
- Hbase Development Guide
- Phoenix on Hbase Development Guide
- Hive Development Guide
- Presto Development Guide
- Sqoop Development Guide
- Hue Development Guide
- Oozie Development Guide
- Flume Development Guide
- Kerberos Development Guide
- Knox Development Guide
- Alluxio Development Guide
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- Livy Development Guide
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- Superset Development Guide
- Impala Development Guide
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- Druid Development Guide
- TensorFlow Development Guide
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Kudu - overview
| Title | Metric | Unit | Description |
|---|---|---|---|
| Tablets | TabletRunning | - | Total number of tablets currently running on all tablet servers |
| Difference in the number of tablet replicas | ClusterReplicaSkew | - | Difference between the number of replicas on the tablet server hosting the most replicas and the number of replicas on the tablet server hosting the fewest replicas |
| TServer threads | ThreadsRunning | - | Number of threads currently running on all tablet servers |
| Master threads | ThreadsRunning | - | Number of threads currently running on all masters |
| TServer logs | ErrorMessages | - | Number of ERROR-level log messages emitted in all processes |
| Master logs | ErrorMessages | - | Number of ERROR-level log messages emitted in all processes |
| WarningMessages | - | Number of WARNING-level log messages emitted in all processes | |
| Oversized write requests | OversizedWriteRequests | - | Number of oversized write requests to the system catalog tablet rejected by the master since start |
Kudu - server
| Title | Metric | Unit | Description |
|---|---|---|---|
| Block cache hit | BlockCacheHit | - | Number of block cache hits. When confirming the cache efficiency, use the value of this metric instead of that of cache_hits |
| BlockCacheMiss | - | Number of block cache misses. When confirming the cache efficiency, use the value of this metric instead of that of cache_misses | |
| Block cache utilization | BlockCacheUsage | bytes | Memory used by block cache |
| File cache hit | FileCacheHit | - | Number of file descriptor cache hits. When confirming the cache efficiency, use the value of this metric instead of that of cache_hits |
| FileCacheMiss | - | Number of file descriptor cache misses. When confirming the cache efficiency, use the value of this metric instead of that of cache_misses | |
| File cache utilization | FileCacheUsage | - | Number of entries file cache |
| Scanner | ActiveScanners | - | Number of currently active scanners |
| ExpiredScanners | - | Number of scanners that have expired due to inactivity since service start | |
| Block manager blocks | BlockUnderManagement | - | Number of currently managed data blocks |
| BlockOpenReading | - | Number of data blocks currently opened for read | |
| BlockOpenWriting | - | Number of data blocks currently opened for write | |
| Block manager bytes | BytesUnderManagement | bytes | Number of bytes of currently managed data blocks |
| Block manager containers | ContainersUnderManagement | - | Number of log block containers |
| FullContainersUnderManagement | - | Number of full log block containers | |
| Tablet leaders | NumRaftLeaders | - | Number of tablet replicas that are Raft leaders |
| Tablet sessions | OpenClientSessions | - | Number of currently opened tablet copy client sessions on this server |
| OpemSourceSessions | - | Number of currently opened tablet copy source sessions on this server | |
| Tablets | TabletBootstrapping | - | Number of currently bootstrapping tablets |
| TabletFailed | - | Number of failed tablets | |
| TabletInitialized | - | Number of currently initialized tablets | |
| TabletNotInitialized | - | Number of currently uninitialized tablets | |
| TabletRunning | - | Number of currently running tablets/Number of currently running threads | |
| TabletShutdown | - | Number of currently shut down tablets | |
| TabletStopped | - | Number of currently stopped tablets | |
| TabletStopping | - | Number of currently stopping tablets | |
| CPU time | CpuStime | ms | Total system CPU time of process |
| CpuUtime | ms | Total user CPU time of process | |
| Data path | DataDirsFailed | - | Number of data directories whose disks are currently in failed status |
| DataDirsFull | - | Number of data directories whose disks are currently full | |
| Thread | ThreadsRunning | - | Number of currently running threads |
| Context | InvoluntarySwitches | - | Total involuntary context switches |
| VoluntarySwitches | - | Total voluntary context switches | |
| Spinlock | SpinlockContentionTime | μs | Amount of time consumed by contention on internal spinlocks since server start |
| Log information | ErrorMessages | - | Number of ERROR-level log messages emitted by the application |
| WarningMessages | - | Number of WARNING-level log messages emitted by the application | |
| Operations in queue | TotalCount | - | Total number |
| Min | - | Minimum number of tasks waiting in the queue | |
| Max | - | Maximum number of tasks waiting in the queue | |
| Mean | - | Average number of tasks waiting in the queue | |
| Percentile_99_9 | - | 99.9th percentile of the number of tasks waiting in the queue | |
| Operation execution duration | TotalCount | μs | Total number of operations |
| Min | μs | Minimum run time | |
| Max | μs | Maximum run time | |
| Mean | μs | Average run time | |
| Percentile_99_9 | μs | 99.9th percentile of the run time | |
| Queuing wait time | TotalCount | μs | Total number of operations |
| Min | μs | Minimum wait time | |
| Max | μs | Maximum wait time | |
| Mean | μs | Average wait time | |
| Percentile_99_9 | μs | 99.9th percentile of the wait time | |
| Allocated bytes | AllocatedBytes | bytes | Number of bytes used by applications. This usually does not match the memory usage reported by the operating system because it does not include TCMalloc overhead or memory fragments |
| Hybrid clock error | HybridClockError | μs | Server clock maximum error; returns 2^64-1 when unable to read the base clock |
| Hybrid clock timestamp | HybridClockTimestamp | μs | Hybrid clock timestamp; returns 2^64-1 when unable to read the base clock |
| TCMalloc memory | HeapSize | bytes | Bytes of system memory reserved by TCMalloc |
| CurrentThreadCacheBytes | bytes | A measure of some of the memory TCMalloc is using (for small objects) | |
| TotalThreadCacheBytes | bytes | A limit to how much memory TCMalloc dedicates for small objects | |
| TCMalloc PageHeap | FreeBytes | bytes | Number of bytes of free mapped pages in the page heap |
| UnMappedBytes | bytes | Number of bytes of free unmapped pages in the page heap | |
| RPC request | ConnectionsAccepted | - | Number of incoming TCP connections made to the RPC server |
| QueueOverflow | - | Number of RPCs dropped because the service queue was full | |
| TimesOutInQueue | - | Number of RPCs that timed out while waiting in the service queue and thus were not processed | |
| RPC FetchData | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC AlterSchema | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC CreateTablet | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC DeleteTablet | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC Quiesce | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC scan | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC ScannerKeepAlive | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC write | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| Write requests rejected due to queue overloading | QueueOverloadRejections | count | Number of write requests rejected due to queue overloading |
| Scan rate | ScannedFromDiskRate | bytes/s | Amount of data scanned per second |
| ScannerReturnedRate | bytes/s | Amount of data returned per second | |
| Scanner bytes | ScannedFromDisk | bytes | Total amount of data scanned from disk |
| ScannerReturned | bytes | Total amount of returned data | |
| Total row operations | RowsInserted | count | Number of rows inserted into the node |
| RowsDeleted | count | Number of rows deleted from the node | |
| RowsUpserted | count | Number of rows upserted into the node | |
| RowsUpdated | count | Number of rows updated on the node | |
| Row operation rate | RowsInsertedRate | count/s | Number of rows inserted into the node per second |
| RowsDeletedRate | count/s | Number of rows deleted from the node per second | |
| RowsUpsertedRate | count/s | Number of rows upserted into the node per second | |
| RowsUpdatedRate | count/s | Number of rows updated on the node per second |
Kudu - master
| Title | Metric | Unit | Description |
|---|---|---|---|
| Block cache hit | BlockCacheHit | - | Number of block cache hits. When confirming the cache efficiency, use the value of this metric instead of that of cache_hits |
| BlockCacheMiss | - | Number of block cache misses. When confirming the cache efficiency, use the value of this metric instead of that of cache_misses | |
| Block cache utilization | BlockCacheUsage | bytes | Memory used by block cache |
| File cache hit | FileCacheHit | - | Number of file descriptor cache hits. When confirming the cache efficiency, use the value of this metric instead of that of cache_hits |
| FileCacheMiss | - | Number of file descriptor cache misses. When confirming the cache efficiency, use the value of this metric instead of that of cache_misses | |
| File cache utilization | FileCacheUsage | - | Number of entries file cache |
| Block manager blocks | BlockUnderManagement | - | Number of currently managed data blocks |
| BlockOpenReading | - | Number of data blocks currently opened for read | |
| BlockOpenWriting | - | Number of data blocks currently opened for write | |
| Block manager bytes | BytesUnderManagement | bytes | Number of bytes of currently managed data blocks |
| Block manager containers | ContainersUnderManagement | - | Number of log block containers |
| FullContainersUnderManagement | - | Number of full log block containers | |
| CPU time | CpuStime | ms | Total system CPU time of process |
| CpuUtime | ms | Total user CPU time of process | |
| Thread | ThreadsRunning | - | Number of currently running threads |
| Data path | DataDirsFailed | - | Number of data directories whose disks are currently in failed status |
| DataDirsFull | - | Number of data directories whose disks are currently full | |
| Allocated bytes | AllocatedBytes | bytes | Number of bytes used by applications. This usually does not match the memory usage reported by the operating system because it does not include TCMalloc overhead or memory fragments |
| Log information | ErrorMessages | - | Number of ERROR-level log messages emitted by the application |
| WarningMessages | - | Number of WARNING-level log messages emitted by the application | |
| Context | InvoluntarySwitches | - | Total involuntary context switches |
| VoluntarySwitches | - | Total voluntary context switches | |
| Operations in queue | TotalCount | - | Total number |
| Min | - | Minimum number of tasks waiting in the queue | |
| Max | - | Maximum number of tasks waiting in the queue | |
| Mean | - | Average number of tasks waiting in the queue | |
| Percentile_99_9 | - | 99.9th percentile of the number of tasks waiting in the queue | |
| Queuing wait time | TotalCount | μs | Total number of operations |
| Min | μs | Minimum wait time | |
| Max | μs | Maximum wait time | |
| Mean | μs | Average wait time | |
| Percentile_99_9 | μs | 99.9th percentile of the wait time | |
| Operation execution duration | TotalCount | μs | Total number of operations |
| Min | μs | Minimum run time | |
| Max | μs | Maximum run time | |
| Mean | μs | Average run time | |
| Percentile_99_9 | μs | 99.9th percentile of the run time | |
| Spinlock | SpinlockContentionTime | μs | Amount of time consumed by contention on internal spinlocks since server start |
| Oversized write requests | OversizedWriteRequests | - | Number of oversized write requests to the system catalog tablet rejected since start |
| Hybrid clock error | HybridClockError | μs | Server clock maximum error; returns 2^64-1 when unable to read the base clock |
| Hybrid clock timestamp | HybridClockTimestamp | μs | Hybrid clock timestamp; returns 2^64-1 when unable to read the base clock |
| Difference in the number of tablet replicas | ClusterReplicaSkew | - | Difference between the number of replicas on the tablet server hosting the most replicas and the number of replicas on the tablet server hosting the fewest replicas |
| Tablet leaders | NumRaftLeaders | - | Number of tablet replicas that are Raft leaders |
| Tablet sessions | OpemSourceSessions | - | Number of currently opened tablet copy source sessions on this server |
| TCMalloc memory | HeapSize | bytes | Bytes of system memory reserved by TCMalloc |
| CurrentThreadCacheBytes | bytes | A measure of some of the memory TCMalloc is using (for small objects) | |
| TotalThreadCacheBytes | bytes | A limit to how much memory TCMalloc dedicates for small objects | |
| TCMalloc page heap | FreeBytes | bytes | Number of bytes of free mapped pages in the page heap |
| UnMappedBytes | bytes | Number of bytes of free unmapped pages in the page heap | |
| RPC request | ConnectionsAccepted | - | Number of incoming TCP connections made to the RPC server |
| QueueOverflow | - | Number of RPCs dropped because the service queue was full | |
| TimesOutInQueue | - | Number of RPCs that timed out while waiting in the service queue and thus were not processed | |
| RPC RunLeaderElection | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC ConnectToMaster | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC Ping | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC TSHeartbeat | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time | |
| RPC FetchData | TotalCount | μs | Total number of operations |
| Min | μs | Minimum processing time | |
| Max | μs | Maximum processing time | |
| Mean | μs | Average processing time | |
| Percentile_99_9 | μs | 99.9th percentile of the processing time |
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