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- Operation Guide
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- 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
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- PrestoSQL Monitoring Metrics
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- 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
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ClickHouse - metrics
| Title | Metric | Unit | Description |
|---|---|---|---|
| Network connections | tcp | - | Number of TCP server connections |
| http | - | Number of HTTP server connections | |
| ZooKeeper event subscriptions | watches | - | Number of ZooKeeper event subscriptions |
| Ephemeral nodes held in ZooKeeper | ephemeralNode | - | Number of ephemeral nodes held in ZooKeeper |
| Active tasks in BackgroundPool | backgroundPoolTask | - | Number of active tasks in BackgroundProcessingPool |
| backgroundSchedulePoolTask | - | Number of active tasks in BackgroundSchedulePool | |
| Threads waiting for locks in Context | contextLockWait | - | Number of threads waiting for locks in Context |
| Throttled INSERT queries | delayedInserts | - | Number of throttled INSERT queries |
| Requests in fly to data sources of dictionaries of cache type | dictCacheRequests | - | Number of requests in fly to data sources of dictionaries of cache type |
| Pending files to process for asynchronous insertion into distributed tables | distributedSend | - | Number of pending files to process for asynchronous insertion into distributed tables |
| Threads | global | - | Number of threads in the global thread pool |
| globalActive | - | Number of active threads in the global thread pool | |
| local | - | Number of threads in the local thread pool | |
| localActive | - | Number of active threads in the local thread pool | |
| Replicas participating in leader election | leaderElection | - | Number of replicas participating in leader election |
| Replicated tables | leaderReplica | - | Number of replicated tables that are leaders |
| readonlyReplica | - | Number of replicated tables in read-only status | |
| Total allocated memory size | memoryTracking | GB | Total memory size allocated to queries being executed |
| backgroundProcessingPool | GB | Total memory size allocated to the background processing pool | |
| backgroundSchedulePool | GB | Total memory size allocated to the background scheduling pool | |
| memoryTrackingForMerges | GB | Total memory size allocated to background merges | |
| Merges being executed in the background | merge | - | Number of merges being executed in the background |
| Opened files | read | - | Number of opened readable files |
| write | - | Number of opened writable files | |
| Table changes | partMutation | - | Number of table changes |
| Query processing threads | queryThread | - | Number of query processing threads |
| Stopped or waiting queries | queryPreempted | - | Number of stopped or waiting queries |
| System calls | read | - | Number of read system calls |
| write | - | Number of write system calls | |
| Blocks | fetch | - | Number of blocks collected from replicas |
| send | - | Number of blocks sent to replicas | |
| check | - | Number of blocks for consistency check | |
| Server change | revision | - | Number of server changes |
| Version number | version | 1 | Version number |
| Threads waiting for read/write locks | waitingRead | - | Number of threads waiting for read/write locks to read from tables |
| waitingWrite | - | Number of threads waiting for read/write locks to write to tables | |
| activeRead | - | Number of threads holding read locks on tables | |
| activeWrite | - | Number of threads holding write locks on tables | |
| Rows in buffer tables | storageBufferRows | - | Number of rows in buffer tables |
| Bytes in buffer tables | storageBufferBytes | MB | Number of bytes in buffer tables |
ClickHouse - events
| Title | Metric | Unit | Description |
|---|---|---|---|
| Queries | total | - | Total number of queries that may be executed |
| select | - | Number of SELECT queries that may be executed | |
| insert | - | Number of INSERT queries that may be executed | |
| Inserted rows | insertedRows | - | Number of rows inserted into all tables |
| Inserted bytes | insertedBytes | - | Number of bytes inserted into all tables |
| Total time waiting for system calls | read | μs | Total time waiting for read system calls |
| write | μs | Total time waiting for write system calls | |
| Opened files | fileOpen | - | Number of opened files |
| Reads/Writes from/to file descriptors | read | - | Number of reads from file descriptors |
| write | - | Number of writes to file descriptors | |
| Bytes read/written from/to file descriptors | read | MB | Number of bytes read from file descriptors |
| write | MB | Number of bytes written to file descriptors | |
| Total time processing threads | realtime | μs | Total time processing threads |
| user | μs | Total time processing threads executing CPU instructions in user space | |
| system | μs | Total time processing threads executing CPU instructions in OS kernel space | |
| Compiled regular expressions | regexpCreated | - | Number of compiled regular expressions |
ClickHouse - asynchronous metrics
| Title | Metric | Unit | Description |
|---|---|---|---|
| Size of cache of marks of StorageMergeTree | markCacheBytes | MB | Size of cache of marks of StorageMergeTree |
| Cache files of marks of StorageMergeTree | markCacheFiles | - | Number of cache files of marks of StorageMergeTree |
| Maximum number of active blocks | maxPartCountForPartition | - | Number of largest active data blocks in partition |
| Databases | databaseCount | - | Number of databases |
| Data tables | tableCount | - | Number of data tables |
| Maximum replica latency | absolute | μs | Maximum replica queue latency |
| relative | μs | Maximum difference of the absolute latency from other blocks | |
| Size of the queue for the operations to be performed | replicasMaxQueueSize | - | Size of the queue for the operations to be performed |
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