IDLE_SESSION_TIMEOUT Query Option (Impala 2.12 or higher only)
IDLE_SESSION_TIMEOUT query option sets the time in seconds after
which an idle session is cancelled. A session is idle when no activity is occurring for
any of the queries in that session, and the session has not started any new queries. Once
a session is expired, you cannot issue any new query requests to it. The session remains
open, but the only operation you can perform is to close it.
IDLE_SESSION_TIMEOUT query option overrides the
‑‑idle_session_timeout startup option. See
Setting Timeout Periods for Daemons, Queries, and Sessions for the
‑‑idle_session_timeout startup option.
IDLE_SESSION_TIMEOUT query option allows JDBC/ODBC connections to set
the session timeout as a query option with the
‑‑idle_session_timeoutis not set, the session never expires.
‑‑idle_session_timeoutis set, use that timeout value.
Added in: Impala 2.12