Active Anti Entropy Stage Tasks | Active tasks for repairing consistency |
Active Cache Cleanups | Active tasks to clear the cache |
Active Compaction Executor Tasks | |
Active Counter Mutation Stage Tasks | |
Active Gossip Stage Tasks | Active tasks sharing knowledge of node state |
Active Internal Response Stage Tasks | Active tasks responding to non-client initiated messages, including bootstrapping and schema checking |
Active Memtable Flush Writer Tasks | Active writes of memtable contents to disk |
Active Memtable Post Flush Tasks | Active post flush operations, like discarding commit log files and flushing secondary indexes |
Active Memtable Reclaim Memory Tasks (Seconds) | Active tasks to make unused memory available |
Active Migration Stage Tasks | Active changes to the schema |
Active Misc Stage Tasks | Active miscellaneous operations, including snapshotting or replicating data after a node has been removed |
Active Mutation Stage Tasks | Active local writes |
Active Native Transport Requests | Active requests to the server using the CQL Native Protocol |
Active Pending Range Calculator Tasks | Active calculations of pending rangers per bootstraps and departed nodes |
Active Read Repair Stage Tasks | Active check for and repair of damaged replicas |
Active Read Stage Tasks | Active local reads |
Active Request Response Stage Tasks | Active tasks to handle responses from other nodes |
Active Validation Executor Tasks | Active schema validations |
Active View Mutation Stage Tasks | Active mutations applied to a view after modifications to a base table |
Available Processors | Number of available processors |
Batch Size Failure Threshold (Kibibytes) | The maximum size a batch may yield before aborting |
CAS Contention Timeout (Milliseconds) | Amount of time to wait for contention resolution for lightweight transactions |
CAS Read Condition Not Met | Number of transaction preconditions that did not match current values during read |
CAS Read Contention | Number of lightweight transaction reads that were contended |
CAS Read Failures | Lightweight transaction reads that failed |
CAS Read Latency (Microseconds) | Average duration of CAS Read events |
CAS Read Latency Event Count (Microseconds) | |
CAS Read Timeouts | Number of lightweight transaction reads that timed out |
CAS Read Total Latency (Microseconds) | Time spent in CAS Read events since process start |
CAS Read Unavailables | Number of lightweight transaction reads that failed because too many replicas were unavailable |
CAS Read Unfinished Commit | Number of lightweight transactions that were committed on read |
CAS Write Condition Not Met | Number of lightweight transaction writes where preconditions did not match current values |
CAS Write Contention | Number of lightweight transaction writes that were contended |
CAS Write Failures | Number of lightweight transaction writes that failed |
CAS Write Latency (Microseconds) | Average duration of CAS Write events |
CAS Write Latency Event Count (Microseconds) | Number of CAS Write events since process start |
CAS Write Timeouts | Number of lightweight transaction writes that timed out |
CAS Write Total Latency (Microseconds) | Time spent in CAS Write events since process start |
CAS Write Unavailables | Number of lightweight transaction writes that failed because too many nodes were unavailable |
CAS Write Unfinished Commit | Number of transactions that were committed on write |
Chunk Cache Capacity (Bytes) | |
Chunk Cache Entries | Total number of chunk cache entries |
Chunk Cache Misses | Total number of chunk cache misses |
Chunk Cache Requests | Total number of chunk cache requests |
Chunk Cache Size (Bytes) | Total size of occupied chunk cache |
Committed Heap Memory (Bytes) | Amount of heap memory committed for the JVM |
Committed Non-Heap Memory (Bytes) | Amount of non-heap memory committed for the JVM |
Committed Virtual Memory Size (Bytes) | |
Compaction Throughput (Mebibytes per Second) | Throttles compaction to the specified total throughput across the node |
Completed Anti Entropy Stage Tasks | Completed tasks for repairing consistency |
Completed Cache Cleanups | Number of times the cache has been cleared |
Completed Compaction Executor Tasks | |
Completed Counter Mutation Stage Tasks | Completed local counter changes |
Completed Gossip Stage Tasks | Completed tasks sharing knowledge of node state |
Completed Internal Response Stage Tasks | Completed tasks responding to non-client initiated messages, including bootstrapping and schema checking |
Completed Memtable Flush Writer Tasks | Completed writes of memtable contents to disk |
Completed Memtable Post Flush Tasks | Completed post flush operations, like discarding commit log files and flushing secondary indexes |
Completed Memtable Reclaim Memory Tasks | Completed tasks to make unused memory available |
Completed Migration Stage Tasks | Completed changes to the schema |
Completed Misc Stage Tasks | Completed miscellaneous operations, including snapshotting or replicating data after a node has been removed |
Completed Mutation Stage Tasks | Completed local writes |
Completed Native Transport Requests | Completed requests to the server using the CQL Native Protocol |
Completed Pending Range Calculator Tasks | Completed calculations of pending rangers per bootstraps and departed nodes |
Completed Read Repair Stage Tasks | Completed check for and repair of damaged replicas |
Completed Read Stage Tasks | |
Completed Request Response Stage Tasks | Completed tasks to handle responses from other nodes |
Completed Validation Executor Tasks | Completed schema validations |
Completed View Mutation Stage Tasks | Completed mutations applied to a view after modifications to a base table |
Concurrent Mark Sweep Collection Count | Number of times the old generation has been garbage collected |
Concurrent Mark Sweep Collection Time (Milliseconds) | Elapsed time garbage collecting the old generation, or relatively long-lived objects |
Counter Cache Capacity | |
Counter Cache Entries | |
Counter Cache Hits | |
Counter Cache Keys to Save | Number of keys that should be saved to disk to quickly warm the counter cache on startup |
Counter Cache Requests | |
Counter Cache Save Period (Seconds) | How often to save counter caches to disk |
Counter Cache Size (Bytes) | Total size of occupied counter cache |
Counter Write RPC Timeout (Milliseconds) | Timeout for counter updates |
Current Generation Number | A value that changes every time the node restarts, faccilitating coordination of data throughout the cluster |
Daemon Threads | Current number of live daemon threads |
Drain Progress | Progress of drain operations |
Free Physical Memory Size (Bytes) | Amount of free memory available to the operating system |
Free Swap Space Size (Bytes) | Amount of free swap space |
Gossip Running | Whether gossip is running |
Hinted Handoff Enabled | A hint indicates that a write needs to be replayed to an unavailable node |
Incremental Backups Enabled | Backs up data updated since the last snapshot was taken |
Index Info Count | Number of on-heap index entries |
Index Info Gets | Number of index seeks |
Indexed Entry Size (Bytes) | On-heap index size |
Initial Heap Memory (Bytes) | Amount of heap memory that the JVM initially requests from the operating system |
Initial Non-Heap Memory (Bytes) | Amount of non-heap memory that the JVM initially requests from the operating system |
Initialized | Whether the node is successfully initialized |
Inter DC Stream Throughput (Megabits per Second) | Throttles all streaming file transfer between the datacenters |
Internal IP Address | The IP used for communication within the Cassandra cluster |
Java Version | Java Version |
Joined | Whether or not the node has joined the cluster |
JVM Implementation | JVM implementation name |
Key Cache Capacity (Bytes) | Key cache capacity in bytes |
Key Cache Entries | Total number of key cache entries |
Key Cache Hits | Total number of key cache hits |
Key Cache Keys to Save | Number of keys that should be saved to disk to quickly warm the key cache on startup |
Key Cache Requests | Total number of key cache requests |
Key Cache Save Period (Seconds) | How often to save key caches to disk |
Key Cache Size (Bytes) | Total size of occupied key cache |
Load String | Human-readable load value |
Maximum File Descriptors | Maximum number of open file descriptors allowed by the operating system |
Maximum Heap Memory (Bytes) | Maximum amount of heap memory that could be committed for the JVM |
Maximum Hint Window (Milliseconds) | Maximum amount of time that hints are generated for an unresponsive node |
Maximum Non-Heap Memory (Bytes) | Maximum amount of non-heap memory that could be committed for the JVM |
Native Transport Maximum Concurrent Connections | Maximum number of concurrent client connections |
Native Transport Running | Whether or not the native protocol server is running |
Objects Pending Finalization | Number of objects queued for finalization, where their memory usage will be reclaimed |
Open File Descriptors | Current number of open file descriptors |
Operating System | Name of the operating system |
Operating System Architecture | Hardware architecture |
Operating System Version | Version of the operating system |
Operation Mode | Operational mode (leaving, joining, normal, decommissioned, client) |
ParNew (Stop the World) Collection Count | Number of times the new generation has been garbage collected |
ParNew (Stop the World) Collection Time (Milliseconds) | Elapsed time garbage collecting the new generation, or relatively short-lived objects |
Pending Anti Entropy Stage Tasks | Pending tasks for repairing consistency |
Pending Cache Cleanups | Pending tasks to clear the cache |
Pending Compaction Executor Tasks | Pending compactions |
Pending Counter Mutation Stage Tasks | Pending local counter changes |
Pending Gossip Stage Tasks | Pending tasks sharing knowledge of node state |
Pending Internal Response Stage Tasks | Pending tasks responding to non-client initiated messages, including bootstrapping and schema checking |
Pending Memtable Flush Writer Tasks | Pending writes of memtable contents to disk |
Pending Memtable Post Flush Tasks | Pending post flush operations, like discarding commit log files and flushing secondary indexes |
Pending Memtable Reclaim Memory Tasks | Pending tasks to make unused memory available |
Pending Migration Stage Tasks | Pending changes to the schema |
Pending Misc Stage Tasks | Pending miscellaneous operations, including snapshotting or replicating data after a node has been removed |
Pending Mutation Stage Tasks | Pending local writes |
Pending Native Transport Requests | Queued requests to the server using the CQL Native Protocol |
Pending Pending Range Calculator Tasks | Pending calculations of pending rangers per bootstraps and departed nodes |
Pending Read Repair Stage Tasks | Pending check for and repair of damaged replicas |
Pending Read Stage Tasks | Pending local reads |
Pending Request Response Stage Tasks | Pending tasks to handle responses from other nodes |
Pending Validation Executor Tasks | Pending schema validations |
Pending View Mutation Stage Tasks | Pending mutations applied to a view after modifications to a base table |
Prepared Statements | Number of prepared statements |
Prepared Statements Evicted | Number of prepared statements that have been evicted to save space for other prepared statements |
Prepared Statements Executed | Number of prepared statements executed |
Process CPU Load | Process CPU Load |
Process CPU Time (Nanoseconds) | Amount of time used by the process |
Range RPC Timeout (Milliseconds) | Timeout for range requests, which may take longer |
Range Slice Failures | Number of token range read requests that failed |
Range Slice Latency (Microseconds) | Average duration of Range Slice events |
Range Slice Latency Event Count (Microseconds) | Number of Range Slice events since process start |
Range Slice Timeouts | Number of token range read requests that timed out |
Range Slice Total Latency (Microseconds) | Time spent in Range Slice events since process start |
Range Slice Unavailables | Number of token range read requests that failed because too many nodes were unavailable |
Read Failures | Reads that failed |
Read Latency (Microseconds) | Average duration of Read events |
Read Latency Event Count (Microseconds) | Number of Read events since process start |
Read RPC Timeout (Milliseconds) | Timeout for reads |
Read Timeouts | Reads that timed out |
Read Total Latency (Microseconds) | Time spent in Read events since process start |
Read Unavailables | Reads that failed because too many nodes were unavailable |
Regular Statements Executed | Number of regular (non-prepared) statements executed |
Release Version | Version of Cassandra |
Removal Status | Status of token removals |
Row Cache Capacity (Bytes) | Row cache capacity |
Row Cache Entries | Total number of row cache entries |
Row Cache Hits | Total number of row cache hits |
Row Cache Keys to Save | Number of keys that should be saved to disk to quickly warm the row cache on startup |
Row Cache Requests | Total number of row cache requests |
Row Cache Save Period (Seconds) | How often to save row caches to disk |
Row Cache Size (Bytes) | Total size of occupied row cache |
RPC Server Running | Whether or not the Thrift (RPC) server is running |
RPC Timeout (Milliseconds) | Overall timeout for all requests |
Schema Version | Identifier for the current version of the schema, for comparison purposes |
Started Threads | Total number of threads created and also started since the Java virtual machine started |
Starting | Whether the node is starting |
Storage Exceptions | Number of internal exceptions caught |
Storage Load (Bytes) | Size of the on disk data size this node manages |
Storage Total Hints | Number of hint messages written to this node since restart |
Stream Throughput (Megabits per Second) | Throttles all outbound streaming file transfers on a node to the specified throughput |
Streaming Socket Timeout (Milliseconds) | How long to wait before timing out a stream and retrying it from the start of the current file |
System CPU Load | System CPU Load |
System Load Average | System load average |
Threads | Current number of live threads including both daemon and non-daemon threads |
Tombstone Failure Threshold | The maximum number of tombstones a query can scan before aborting |
Tombstone Warn Threshold | The maximum number of tombstones a query can scan before warning |
Total Hints in Progress | Number of hints attemping to be sent currently |
Total Physical Memory Size (Bytes) | Amount of memory available to the operating system |
Total Swap Space Size (Bytes) | Amount of swap space allocated |
Truncate RPC Timeout (Milliseconds) | Timeout for truncate requests, which generally take longer than other requests because of flushing requirements |
Uptime (Milliseconds) | Time since Cassandra last started |
Used Heap Memory (Bytes) | Amount of heap memory in use |
Used Non-Heap Memory (Bytes) | Amount of non-heap memory in use |
View Pending Mutations | View mutations that have been attempted but have not yet succeeded |
View Replicas Attempted | Number of attempted view replications |
View Replicas Succeeded | Number of successful view replications |
View Write Failures | View writes that failed |
View Write Latency (Microseconds) | Average duration of View Write events |
View Write Latency Event Count (Microseconds) | Number of View Write events since process start |
View Write Timeouts | Timeouts when writing to materialized views |
View Write Total Latency (Microseconds) | Time spent in View Write events since process start |
View Write Unavailables | View writes that failed because too many replicas were unavailable |
Virtual Machine Version | JVM Implementation Version |
Write Failures | Writes that have failed |
Write Latency (Microseconds) | Average duration of Write events |
Write Latency Event Count (Microseconds) | Number of Write events since process start |
Write RPC Timeout (Milliseconds) | Timeout for writes |
Write Timeouts | Writes that have timed out |
Write Total Latency (Microseconds) | Time spent in Write events since process start |
Write Unavailables | Writes that failed because too many replicas were unavailable |