Close Idle TCP Connections (with One Hour Timeout by Default)

Why it matters

In large clusters with many distributed tables on each server, every server can maintain a connection pool to every other server. After periods of peak query concurrency, these connections may become idle and stall, leading to resource exhaustion and degraded performance. This feature helps to automatically close such idle connections, improving resource management and cluster stability.

How to use it

This feature is enabled by default with a one-hour idle connection timeout. Users do not need to take any manual steps to activate it. If needed, the idle connection timeout can be configured according to cluster requirements.