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txthrottler: record replication lag on PRIMARY only #16609

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txthrottler: record replication lag on PRIMARY only #16609

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8585ccb
`txthrottler`: monitor log on `PRIMARY` only
timvaillancourt Jun 24, 2024
188aa0d
Add comments
timvaillancourt Jun 24, 2024
8b6db41
rename cancel func
timvaillancourt Jun 26, 2024
755ee1f
Merge remote-tracking branch 'origin/main' into txthrottler-MakePrimary
timvaillancourt Jul 25, 2024
a76eec9
Merge remote-tracking branch 'origin/main' into txthrottler-MakePrimary
timvaillancourt Aug 16, 2024
32ae433
fix mockTxThrottler
timvaillancourt Aug 20, 2024
e33c8ae
fix tests
timvaillancourt Aug 20, 2024
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5 changes: 3 additions & 2 deletions go/vt/vttablet/tabletserver/query_executor_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1857,8 +1857,9 @@ func (m mockTxThrottler) Open() (err error) {
return nil
}

func (m mockTxThrottler) Close() {
}
func (m mockTxThrottler) Close() {}
func (m mockTxThrottler) MakePrimary() {}
func (m mockTxThrottler) MakeNonPrimary() {}

func (m mockTxThrottler) Throttle(priority int, workload string) (result bool) {
return m.throttle
Expand Down
6 changes: 6 additions & 0 deletions go/vt/vttablet/tabletserver/state_manager.go
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Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,8 @@ type (
txThrottler interface {
Open() error
Close()
MakePrimary()
MakeNonPrimary()
}

onlineDDLExecutor interface {
Expand Down Expand Up @@ -456,6 +458,7 @@ func (sm *stateManager) servePrimary() error {
sm.hs.MakePrimary(true)
sm.se.MakePrimary(true)
sm.rt.MakePrimary()
sm.txThrottler.MakePrimary()
sm.tracker.Open()
// We instantly kill all stateful queries to allow for
// te to quickly transition into RW, but olap and stateless
Expand All @@ -482,6 +485,7 @@ func (sm *stateManager) unservePrimary() error {
sm.se.MakePrimary(false)
sm.hs.MakePrimary(false)
sm.rt.MakePrimary()
sm.txThrottler.MakePrimary()
sm.setState(topodatapb.TabletType_PRIMARY, StateNotServing)
return nil
}
Expand All @@ -498,6 +502,7 @@ func (sm *stateManager) serveNonPrimary(wantTabletType topodatapb.TabletType) er
sm.tracker.Close()
sm.se.MakeNonPrimary()
sm.hs.MakeNonPrimary()
sm.txThrottler.MakeNonPrimary()

if err := sm.connect(wantTabletType); err != nil {
return err
Expand All @@ -516,6 +521,7 @@ func (sm *stateManager) unserveNonPrimary(wantTabletType topodatapb.TabletType)

sm.se.MakeNonPrimary()
sm.hs.MakeNonPrimary()
sm.txThrottler.MakeNonPrimary()

if err := sm.connect(wantTabletType); err != nil {
return err
Expand Down
45 changes: 27 additions & 18 deletions go/vt/vttablet/tabletserver/state_manager_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -77,18 +77,17 @@ func TestStateManagerServePrimary(t *testing.T) {
assert.Equal(t, testNow, sm.ptsTimestamp)

verifySubcomponent(t, 1, sm.watcher, testStateClosed)

verifySubcomponent(t, 2, sm.se, testStateOpen)
verifySubcomponent(t, 3, sm.vstreamer, testStateOpen)
verifySubcomponent(t, 4, sm.qe, testStateOpen)
verifySubcomponent(t, 5, sm.txThrottler, testStateOpen)
verifySubcomponent(t, 6, sm.rt, testStatePrimary)
verifySubcomponent(t, 7, sm.tracker, testStateOpen)
verifySubcomponent(t, 8, sm.te, testStatePrimary)
verifySubcomponent(t, 9, sm.messager, testStateOpen)
verifySubcomponent(t, 10, sm.throttler, testStateOpen)
verifySubcomponent(t, 11, sm.tableGC, testStateOpen)
verifySubcomponent(t, 12, sm.ddle, testStateOpen)
verifySubcomponent(t, 7, sm.txThrottler, testStatePrimary)
verifySubcomponent(t, 8, sm.tracker, testStateOpen)
verifySubcomponent(t, 9, sm.te, testStatePrimary)
verifySubcomponent(t, 10, sm.messager, testStateOpen)
verifySubcomponent(t, 11, sm.throttler, testStateOpen)
verifySubcomponent(t, 12, sm.tableGC, testStateOpen)
verifySubcomponent(t, 13, sm.ddle, testStateOpen)

assert.False(t, sm.se.(*testSchemaEngine).nonPrimary)
assert.True(t, sm.se.(*testSchemaEngine).ensureCalled)
Expand All @@ -109,14 +108,14 @@ func TestStateManagerServeNonPrimary(t *testing.T) {
verifySubcomponent(t, 4, sm.tracker, testStateClosed)
assert.True(t, sm.se.(*testSchemaEngine).nonPrimary)

verifySubcomponent(t, 5, sm.se, testStateOpen)
verifySubcomponent(t, 6, sm.vstreamer, testStateOpen)
verifySubcomponent(t, 7, sm.qe, testStateOpen)
verifySubcomponent(t, 8, sm.txThrottler, testStateOpen)
verifySubcomponent(t, 9, sm.te, testStateNonPrimary)
verifySubcomponent(t, 10, sm.rt, testStateNonPrimary)
verifySubcomponent(t, 11, sm.watcher, testStateOpen)
verifySubcomponent(t, 12, sm.throttler, testStateOpen)
verifySubcomponent(t, 6, sm.se, testStateOpen)
verifySubcomponent(t, 7, sm.vstreamer, testStateOpen)
verifySubcomponent(t, 8, sm.qe, testStateOpen)
verifySubcomponent(t, 9, sm.txThrottler, testStateOpen)
verifySubcomponent(t, 10, sm.te, testStateNonPrimary)
verifySubcomponent(t, 11, sm.rt, testStateNonPrimary)
verifySubcomponent(t, 12, sm.watcher, testStateOpen)
verifySubcomponent(t, 13, sm.throttler, testStateOpen)

assert.Equal(t, topodatapb.TabletType_REPLICA, sm.target.TabletType)
assert.Equal(t, StateServing, sm.state)
Expand All @@ -139,9 +138,9 @@ func TestStateManagerUnservePrimary(t *testing.T) {
verifySubcomponent(t, 8, sm.se, testStateOpen)
verifySubcomponent(t, 9, sm.vstreamer, testStateOpen)
verifySubcomponent(t, 10, sm.qe, testStateOpen)
verifySubcomponent(t, 11, sm.txThrottler, testStateOpen)

verifySubcomponent(t, 12, sm.rt, testStatePrimary)
verifySubcomponent(t, 13, sm.txThrottler, testStatePrimary)

assert.Equal(t, topodatapb.TabletType_PRIMARY, sm.target.TabletType)
assert.Equal(t, StateNotServing, sm.state)
Expand All @@ -165,7 +164,7 @@ func TestStateManagerUnserveNonPrimary(t *testing.T) {
verifySubcomponent(t, 7, sm.se, testStateOpen)
verifySubcomponent(t, 8, sm.vstreamer, testStateOpen)
verifySubcomponent(t, 9, sm.qe, testStateOpen)
verifySubcomponent(t, 10, sm.txThrottler, testStateOpen)
verifySubcomponent(t, 10, sm.txThrottler, testStateNonPrimary)

verifySubcomponent(t, 11, sm.rt, testStateNonPrimary)
verifySubcomponent(t, 12, sm.watcher, testStateOpen)
Expand Down Expand Up @@ -932,6 +931,16 @@ func (te *testTxThrottler) Close() {
te.state = testStateClosed
}

func (te *testTxThrottler) MakePrimary() {
te.order = order.Add(1)
te.state = testStatePrimary
}

func (te *testTxThrottler) MakeNonPrimary() {
te.order = order.Add(1)
te.state = testStateNonPrimary
}

type testOnlineDDLExecutor struct {
testOrderState
}
Expand Down
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