Jeff Mitchell
396edfca80
* Add an extra cleanup task for sessions stuck in canceling state See the comment on the migrations file for details.
74 lines
2.2 KiB
PL/PgSQL
74 lines
2.2 KiB
PL/PgSQL
begin;
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-- This adds additional cleanup to what went into 0.8.x. There could be a case
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-- where sessions can persist in canceled state even if there are no connections
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-- for that session (possibly due to cleanup) and will never be transitioned
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-- because connection state cannot be determined.
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--
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-- If they have previously been marked terminated in the warehouse we delete
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-- them; if not we mark them terminated so it's recorded in the warehouse and
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-- the cleanup job should eventually clear these out.
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with
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canceling_sessions(session_id) as (
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select session_id
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from session_state
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where state = 'canceling'
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and end_time is null
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),
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no_connection_canceling_sessions as (
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select session_id
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from canceling_sessions
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where session_id not in
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(
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select session_id
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from session_connection
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)
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),
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has_termination_reason (session_id) as (
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select public_id
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from session
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where public_id in
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(
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select session_id
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from no_connection_canceling_sessions
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)
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and termination_reason is not null
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),
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terminated_in_warehouse (session_id) as (
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select session_id
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from has_termination_reason
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where session_id in
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(
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select session_id
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from wh_session_accumulating_fact
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where session_terminated_date_key <> -1
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)
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),
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not_terminated_in_warehouse (session_id) as (
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select session_id
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from has_termination_reason
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where session_id not in
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(
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select session_id
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from terminated_in_warehouse
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)
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),
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delete_terminated_in_warehouse_from_session as (
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delete from session
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where public_id in
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(
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select session_id
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from terminated_in_warehouse
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)
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)
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update session
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set
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version = version + 1,
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termination_reason = 'canceled'
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where public_id in
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(
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select session_id
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from not_terminated_in_warehouse
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);
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commit; |