1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
# Copyright (C) 2019-present MongoDB, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the Server Side Public License, version 1,
# as published by MongoDB, Inc.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# Server Side Public License for more details.
#
# You should have received a copy of the Server Side Public License
# along with this program. If not, see
# <http://www.mongodb.com/licensing/server-side-public-license>.
#
# As a special exception, the copyright holders give permission to link the
# code of portions of this program with the OpenSSL library under certain
# conditions as described in each individual source file and distribute
# linked combinations including the program with the OpenSSL library. You
# must comply with the Server Side Public License in all respects for
# all of the code used other than as permitted herein. If you modify file(s)
# with this exception, you may extend this exception to your version of the
# file(s), but you are not obligated to do so. If you do not wish to do so,
# delete this exception statement from your version. If you delete this
# exception statement from all source files in the program, then also delete
# it in the license file.
#
global:
cpp_namespace: "mongo"
cpp_includes:
- "mongo/db/transaction_participant.h"
server_parameters:
maxTransactionLockRequestTimeoutMillis:
description: >-
Max number of milliseconds that any transaction lock request
will wait for lock acquisition. If an operation provides a greater timeout in a lock request,
maxTransactionLockRequestTimeoutMillis will override it. If this is set to a negative value, it
is inactive and nothing will be overridden.
set_at: [ startup, runtime ]
cpp_vartype: AtomicWord<int>
cpp_varname: gMaxTransactionLockRequestTimeoutMillis
# 5 milliseconds will help avoid deadlocks, but will still allow fast-running metadata operations
# to run without aborting transactions.
default: 5
transactionLifetimeLimitSeconds:
description: >-
Lifetime given to each transaction.
Transactions must eventually expire to preempt storage cache pressure immobilizing the system.
set_at: [ startup, runtime ]
cpp_vartype: AtomicWord<decltype(TransactionParticipant::observeTransactionLifetimeLimitSeconds)::Argument>
cpp_varname: gTransactionLifetimeLimitSeconds
validator:
gte: 1
on_update: std::ref(TransactionParticipant::observeTransactionLifetimeLimitSeconds)
default: 60
useMultipleOplogEntryFormatForTransactions:
description: >-
Use multi oplog format for transactions to allow transactions > 16MB.
set_at: startup
cpp_vartype: bool
cpp_varname: gUseMultipleOplogEntryFormatForTransactions
default: false
|
