issue: #45227
Increase the default session TTL to 30 seconds to tolerate etcd failover
time. This prevents session expiration during etcd cluster failover,
improving system stability.
When etcd undergoes failover (leader election or node restart), the
previous 10s TTL was too short to survive the failover window, causing
unnecessary session expiration and component restarts. The new 30s TTL
provides sufficient buffer for etcd to complete failover while
maintaining session liveness.
Changes:
- Update DefaultSessionTTL constant from 10 to 30
- Update SessionTTL ParamItem DefaultValue from "10" to "30"
Signed-off-by: Wei Liu <wei.liu@zilliz.com>
931d4bf95f