ScyllaDB is a high-performance, distributed NoSQL database designed to handle large volumes of data with low latency. It is compatible with Apache Cassandra and offers enhanced performance by leveraging a modern architecture that takes full advantage of multi-core processors and large memory resources.
In ScyllaDB, a StreamingTimeout error occurs when data streaming between nodes fails to complete within the expected timeframe. This can manifest as stalled data transfers or incomplete data replication, potentially leading to data inconsistency across the cluster.
The StreamingTimeout issue is typically caused by network latency or node overload. When nodes in a ScyllaDB cluster attempt to stream data to one another, they rely on a stable and responsive network connection. If the network is slow or congested, or if the nodes are overwhelmed with other tasks, the streaming process may not complete in time, triggering a timeout error.
To resolve a StreamingTimeout error, follow these steps:
Use tools like PingPlotter or Wireshark to analyze network latency and packet loss between nodes. Ensure that the network is stable and has sufficient bandwidth.
Utilize monitoring tools such as Prometheus and Grafana to observe CPU and memory usage on each node. If nodes are overloaded, consider redistributing workloads or adding more nodes to the cluster.
Modify ScyllaDB's streaming settings to accommodate higher latencies. This can be done by adjusting the streaming_socket_timeout_in_ms parameter in the scylla.yaml configuration file. For example:
streaming_socket_timeout_in_ms: 30000
Restart the ScyllaDB service after making changes:
sudo systemctl restart scylla-server
Once network and node conditions are optimized, retry the streaming operation. This can often be done by re-initiating the repair process:
nodetool repair
By addressing network and node performance issues, and adjusting ScyllaDB's configuration settings, you can effectively resolve StreamingTimeout errors. For more detailed guidance, refer to the ScyllaDB Documentation.
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