CassandraMetriccassandra_thread_pool_active_tasks
Number of active tasks across thread poolsDimensions:None
Interface Metrics (2)
Native
Number of tasks currently being actively worked on by a thread poolDimensions:None
Sources
Knowledge Base (1 documents, 0 chunks)
troubleshootingKey Concepts: Cassandra Heap Issues666 wordsscore: 0.75This page provides troubleshooting guidance for Cassandra heap memory issues and Out Of Memory (OOM) exceptions. It explains common causes including memtables, read patterns, repair operations, and compactions, along with diagnostic approaches using nodetool commands and potential workarounds for heap pressure.
Related Insights (1)
Threadpool Saturation Blocking New Requestswarning
Cassandra's SEDA architecture relies on threadpools for async processing. When cassandra_thread_pool_count_blocked_tasks or cassandra_thread_pool_currently_blocked_tasks accumulate, requests queue waiting for threads, causing latency spikes that don't correlate with CPU/disk saturation.
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