Cassandra Metrics
| Metrics | Description |
|---|---|
| Average Read|Write latency (microseconds) | Total Read|Write divided Number of Reads|Writes |
| Commands Completed(Only For DSE Cassandra) | Total read repair commands completed since startup. |
| Commands Pending(Only For DSE Cassandra) | A current number of the read repair commands pending. |
| Compaction Tasks Completed | The number of completed compactions since server start or restart. |
| Compaction Tasks Pending | The estimated number of compactions remaining to perform. |
| Disk Load (bytes) | The size (in bytes) of the on-disk data size the node manages. |
| Dropped Mutations | A dropped Write attempt on a node |
| Exceptions | The number of internal exceptions caught. Under normal exceptions, this should be zero. |
| GC Collection Count | The total number of collections that have occurred. |
| GC Collection Time (ms) | The time (in milliseconds) that Cassandra JVM takes to perform the garbage collection. |
| Heap Memory Used (bytes) | The heap Memory Used by JVM in bytes. |
| Key Cache Hit Percentage | The percentage of Key cache (Cache for partition to sstable offsets) hit rate. |
| Max Partition Size | The size of the largest compacted partition (in bytes). |
| Memtable Live Data Size (bytes) | The disk space used by SSTables that belongs to this table (in bytes). |
| Messaging Latency | The latency for inter-node communication. |
| Non Heap Memory Used (bytes) | The memory used by JVM other than heap memory (in bytes). |
| Number of Reads|Writes | The number of the Reads|Write requests. |
| Prepared Statements Executed | A number of Prepared Statements executed. |
| Process CPU Load Percentage | The Percentage of the recent cpu usage for the Java Virtual
Machine process. |
| Read Failures | The number of failed Read operations |
| Read Repair Attempted(Only For DSE Cassandra) | The read repairs attempted since startup. |
| Read Repaired Background(Only For DSE Cassandra) | A number of the read repairs performed asynchronously since startup. |
| Read Repaired Blocking(Only For DSE Cassandra) | A number of the read repairs performed synchronously since startup. |
| Read Timeout Exceptions | The number of timeouts encountered for the read request. |
| Read Unavailability Exceptions | The number of unavailable exceptions encountered for the read request. |
| Read|Write Throughput | Derived from Number of Reads|Writes metrics over 1 minute. |
| Regular Statements Executed | A number of nonprepared statements executed. |
| Repair Age Percentage | The percentage of the table data that is repaired on disk. |
| Responses Completed(Only For DSE Cassandra) | The current read repairs completed count. |
| Responses Pending(Only For DSE Cassandra) | The current read repair responses pending count. |
| System CPU Load Percentage | The Percentage of the recent cpu usage |
| ThreadPools|Request|Active Tasks|Authz Stage | The number of tasks being actively worked on by AuthzStage thread pool. |
| ThreadPools|Request|Active Tasks|Read Repair Stage | The number of tasks being actively worked on by Read Repair Stage thread pool. |
| ThreadPools|Request|Active Tasks|Request Response Stage | The number of tasks being actively worked on by Request Response Stage thread pool. |
| ThreadPools|Internal|Active Tasks|Anti Entropy Stage | The number of tasks being actively worked on by Anti Entropy Stage thread pool. |
| ThreadPools|Internal|Active Tasks|Background IO Stage | The number of tasks being actively worked on by Background IO Stage thread pool. |
| ThreadPools|Internal|Active Tasks|Gossip Stage |
The number of tasks being actively worked on by Gossip Stage thread pool. |
| ThreadPools|Internal|Active Tasks|Internal Response Stage | The number of tasks being actively worked on by Internal Response Stage thread pool. |
| ThreadPools|Internal|Active Tasks|Migration Stage | The number of tasks being actively worked on by Migration Stage thread pool. |
| ThreadPools|Internal|Active Tasks|Misc Stage | The number of tasks being actively worked on by Misc Stage thread pool. |
| ThreadPools|Request|Pending Tasks|Authz Stage | The number of queued tasks queued up by AuthzStage thread pool. |
| ThreadPools|Request|Pending Tasks|Read Repair Stage | The number of queued tasks queued up by the Read Repair Stage thread pool. |
| ThreadPools|Request|Pending Tasks|Request Response Stage | The number of queued tasks queued up by Request Response Stage thread pool. |
| ThreadPools|Internal|Pending Tasks|Anti Entropy Stage | The number of queued tasks queued up by Anti Entropy Stage thread pool. |
| ThreadPools|Internal|Pending Tasks|Background IO Stage | The number of queued tasks queued up by Background IO Stage thread pool. |
| ThreadPools|Internal|Pending Tasks|Gossip Stage | The number of queued tasks queued up by Gossip Stage thread pool. |
| ThreadPools|Internal|Pending Tasks|Internal Response Stage | The number of queued tasks queued up by Internal Response Stage thread pool. |
| ThreadPools|Internal|Pending Tasks|Migration Stage | The number of queued tasks queued up by Migration Stage thread pool. |
| ThreadPools|Internal|Pending Tasks|Misc Stage | The number of queued tasks queued up by Misc Stage thread pool. |
| ThreadPools|Request|Currently Blocked Tasks|Authz Stage | The number of tasks that were blocked due to queue saturation on AuthzStage thread pool. |
| ThreadPools|Request|Currently Blocked Tasks|Read Repair Stage | The number of tasks that were blocked due to queue saturation on Read Repair Stage thread pool. |
| ThreadPools|Request|Currently Blocked Tasks|Request Response Stage | The number of tasks that were blocked due to queue saturation on Request Response Stage thread pool. |
| ThreadPools|Internal|Currently Blocked Tasks|Anti Entropy Stage | The number of tasks that were blocked due to queue saturation on Anti Entropy Stage thread pool. |
| ThreadPools|Internal|Currently Blocked Tasks|Background IO Stage | The number of tasks that were blocked due to queue saturation on Background IO Stage thread pool. |
| ThreadPools|Internal|Currently Blocked Tasks|Gossip Stage | The number of tasks that were blocked due to queue saturation on Gossip Stage thread pool. |
| ThreadPools|Internal|Currently Blocked Tasks|Internal Response Stage | The number of tasks that were blocked due to queue saturation on Internal Response Stage thread pool. |
| ThreadPools|Internal|Currently Blocked Tasks|Migration Stage"; | The number of tasks that were blocked due to queue saturation on Migration Stage thread pool. |
| ThreadPools|Internal|Currently Blocked Tasks|Misc Stage"; | The number of tasks that were blocked due to queue saturation on Misc Stage thread pool. |
| Total Read|Write latency (microseconds) | Total Read|Write Latency |
| Write Failures | The number of failed Write operations |
| Write Timeout Exceptions | Number of timeouts encountered for write request. |
| Write Unavailability Exceptions | Number of unavailable exceptions encountered for write request. |