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pd: disable location replacement #555

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merged 23 commits into from
Oct 22, 2020
Merged

pd: disable location replacement #555

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c188582
pd: disable location replacement
YuJuncen Oct 15, 2020
7d3e70c
pd: fix
YuJuncen Oct 15, 2020
500004b
pd: fix bool type to string
Oct 15, 2020
b7cf556
pd: fix restore-config after restore
Oct 15, 2020
142d7b1
testing: add some debug info
Oct 15, 2020
df23c4c
testing: add more debug info
Oct 15, 2020
298a945
testing: disable testing for config restore
Oct 15, 2020
f851159
testing: use kill instead of pkill
Oct 15, 2020
51760e5
Merge branch 'master' of https://github.com/pingcap/br into disable-l…
YuJuncen Oct 15, 2020
97ec4a1
pd: fix name
YuJuncen Oct 15, 2020
1ad142e
tests: fix test
Oct 15, 2020
ce5940f
tests: wait tiflash sync
Oct 15, 2020
7def25a
tests: add more time for waiting tiflash sync
Oct 15, 2020
6734867
tests: read from tikv
Oct 15, 2020
4e90fb8
Merge branch 'master' into disable-location-replacement
YuJuncen Oct 21, 2020
9342ee0
*: remove mis-uploaded file
YuJuncen Oct 21, 2020
c80f73a
Update tests/br_other/run.sh
YuJuncen Oct 22, 2020
48e1e49
tests: set a timeout for tiflash syncing
YuJuncen Oct 22, 2020
41edf3e
tests: waiting for tiflash syncing by another way
YuJuncen Oct 22, 2020
49080f8
Merge branch 'master' into disable-location-replacement
3pointer Oct 22, 2020
cd4dd7a
tests: fix tiflash testing
YuJuncen Oct 22, 2020
73bc29a
Merge branch 'disable-location-replacement' of https://github.com/yuj…
YuJuncen Oct 22, 2020
415745c
tests: back to use the origin waiting way
YuJuncen Oct 22, 2020
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24 changes: 18 additions & 6 deletions pkg/pdutil/pd.go
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Original file line number Diff line number Diff line change
Expand Up @@ -73,11 +73,12 @@ var (

// DefaultPDCfg find by https://github.com/tikv/pd/blob/master/conf/config.toml.
DefaultPDCfg = map[string]interface{}{
"max-merge-region-keys": 200000,
"max-merge-region-size": 20,
"leader-schedule-limit": 4,
"region-schedule-limit": 2048,
"max-snapshot-count": 3,
"max-merge-region-keys": 200000,
"max-merge-region-size": 20,
"leader-schedule-limit": 4,
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According to @Yisaer, these two configs "leader-schedule-limit" and "region-schedule-limit" don't help the schedule speed. should we remove it in this PR?

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I think we could leave a TODO here and try to merge this firstly... I'm afraid that if any error occurs during editing, we cannot merge this in the current unstable CI environment...

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currently leader-schedule-limit and region-schedule-limit is not supported in temporary configuration tikv/pd#3088

"region-schedule-limit": 2048,
"max-snapshot-count": 3,
"enable-location-replacement": "true",
}
)

Expand Down Expand Up @@ -410,6 +411,7 @@ func (p *PdController) UpdatePDScheduleConfig(
if e == nil {
return nil
}
log.Warn("failed to update PD config, will try next", zap.Error(e), zap.String("pd", addr))
}
return errors.Annotate(berrors.ErrPDUpdateFailed, "failed to update PD schedule config")
}
Expand Down Expand Up @@ -444,6 +446,12 @@ func restoreSchedulers(ctx context.Context, pd *PdController, clusterCfg cluster
if err := pd.UpdatePDScheduleConfig(ctx, scheduleLimitCfg); err != nil {
return errors.Annotate(err, "fail to update PD schedule config")
}
if locationPlacement, ok := clusterCfg.scheduleCfg["enable-location-replacement"]; ok {
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How about adding "enable-location-replacement" to pdScheduleLimitCfg?

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@YuJuncen YuJuncen Oct 16, 2020 •
edited
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The map pdScheduleLimitCfg is also used in removeSchedulers, and they also have some generic traits(e.g. any of their value is number), so I'm fearing adding enable-location-replacement needs more redundant codes.

See here:

br/pkg/pdutil/pd.go

Lines 511 to 522 in 6734867

for _, cfgKey := range pdScheduleLimitCfg {
value := scheduleCfg[cfgKey]
if value == nil {
// Ignore non-exist config.
continue
}
// Speed update PD scheduler by enlarging scheduling limits.
// Multiply limits by store count but no more than 40.
// Larger limit may make cluster unstable.
limit := int(value.(float64))
scheduleLimitCfg[cfgKey] = math.Min(40, float64(limit*len(stores)))

log.Debug("restoring config enable-location-replacement", zap.Any("enable-location-placement", locationPlacement))
if err := pd.UpdatePDScheduleConfig(ctx, map[string]interface{}{"enable-location-replacement": locationPlacement}); err != nil {
return err
}
}
return nil
}

Expand Down Expand Up @@ -485,6 +493,7 @@ func (p *PdController) RemoveSchedulers(ctx context.Context) (undo utils.UndoFun
}

undo = p.makeUndoFunctionByConfig(clusterConfig{scheduler: removedSchedulers, scheduleCfg: scheduleCfg})
log.Debug("saved PD config", zap.Any("config", scheduleCfg))

disableMergeCfg := make(map[string]interface{})
for _, cfgKey := range pdRegionMergeCfg {
Expand Down Expand Up @@ -515,7 +524,10 @@ func (p *PdController) RemoveSchedulers(ctx context.Context) (undo utils.UndoFun
limit := int(value.(float64))
scheduleLimitCfg[cfgKey] = math.Min(40, float64(limit*len(stores)))
}
return undo, p.UpdatePDScheduleConfig(ctx, scheduleLimitCfg)
if err := p.UpdatePDScheduleConfig(ctx, scheduleLimitCfg); err != nil {
return undo, err
}
return undo, p.UpdatePDScheduleConfig(ctx, map[string]interface{}{"enable-location-replacement": "false"})
}

// Close close the connection to pd.
Expand Down
6 changes: 0 additions & 6 deletions run-test.sh
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This file was deleted.

17 changes: 10 additions & 7 deletions tests/br_other/run.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -83,7 +83,7 @@ curl "http://localhost:$PPROF_PORT/debug/pprof/trace?seconds=1" 2>&1 > /dev/null
echo "pprof started..."

curl http://$PD_ADDR/pd/api/v1/config/schedule | grep '"disable": false'

curl http://$PD_ADDR/pd/api/v1/config/schedule | jq '."enable-location-replacement"' | grep "false"
backup_fail=0
echo "another backup start expect to fail due to last backup add a lockfile"
run_br --pd $PD_ADDR backup full -s "local://$TEST_DIR/$DB/lock" --concurrency 4 || backup_fail=1
Expand All @@ -94,7 +94,7 @@ fi

# check is there still exists scheduler not in pause.
pause_schedulers=$(curl http://$PD_ADDR/pd/api/v1/schedulers?status="paused" | grep "scheduler" | wc -l)
if [ "$pause_schedulers" -ne "3" ];then
if [ "$pause_schedulers" -lt "3" ];then
echo "TEST: [$TEST_NAME] failed because paused scheduler are not enough"
exit 1
fi
Expand All @@ -120,6 +120,7 @@ then
exit 1
fi


default_pd_values='{
"max-merge-region-keys": 200000,
"max-merge-region-size": 20,
Expand All @@ -136,22 +137,24 @@ for key in $(echo $default_pd_values | jq 'keys[]'); do
fi
done

pd_settings=5

# check is there still exists scheduler in pause.
pause_schedulers=$(curl http://$PD_ADDR/pd/api/v1/schedulers?status="paused" | grep "scheduler" | wc -l)
# There shouldn't be any paused schedulers since BR gracfully shutdown.
if [ "$pause_schedulers" -ne "0" ];then
pause_schedulers_after=$(curl http://$PD_ADDR/pd/api/v1/schedulers?status="paused" | grep "scheduler" | wc -l)
if [ "$pause_schedulers" -ne "$pause_schedulers_after" ];then
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echo "TEST: [$TEST_NAME] failed because paused scheduler has changed"
exit 1
fi

pd_settings=6

# balance-region scheduler enabled
curl http://$PD_ADDR/pd/api/v1/config/schedule | jq '."schedulers-v2"[] | {disable: .disable, type: ."type" | select (.=="balance-region")}' | grep '"disable": false' || ((pd_settings--))
# balance-leader scheduler enabled
curl http://$PD_ADDR/pd/api/v1/config/schedule | jq '."schedulers-v2"[] | {disable: .disable, type: ."type" | select (.=="balance-leader")}' | grep '"disable": false' || ((pd_settings--))
# hot region scheduler enabled
curl http://$PD_ADDR/pd/api/v1/config/schedule | jq '."schedulers-v2"[] | {disable: .disable, type: ."type" | select (.=="hot-region")}' | grep '"disable": false' || ((pd_settings--))
# location replacement enabled
curl http://$PD_ADDR/pd/api/v1/config/schedule | jq '."enable-location-replacement"' | grep "true" || ((pd_settings--))

# we need reset pd config to default
# until pd has the solution to temporary set these scheduler/configs.
Expand All @@ -163,7 +166,7 @@ curl http://$PD_ADDR/pd/api/v1/config/schedule | jq '."max-merge-region-size"' |
# max-merge-region-keys set to default 200000
curl http://$PD_ADDR/pd/api/v1/config/schedule | jq '."max-merge-region-keys"' | grep "200000" || ((pd_settings--))

if [ "$pd_settings" -ne "5" ];then
if [ "$pd_settings" -ne "6" ];then
echo "TEST: [$TEST_NAME] test validate reset pd config failed!"
exit 1
fi
Expand Down
5 changes: 3 additions & 2 deletions tests/br_tiflash/run.sh
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Expand Up @@ -52,12 +52,13 @@ run_br backup full -s "local://$TEST_DIR/$DB" --pd $PD_ADDR
run_sql "DROP DATABASE $DB"
run_br restore full -s "local://$TEST_DIR/$DB" --pd $PD_ADDR

AFTER_BR_COUNT=`run_sql "SELECT count(*) FROM $DB.kv;" | sed -n "s/[^0-9]//g;/^[0-9]*$/p" | tail -n1`
# FIXME after stopping schedulers, tiflash takes many time to sync with TiKV(even 30s isn't enough).
AFTER_BR_COUNT=`run_sql "SELECT count(*) /*+ READ_FROM_STORAGE(TIKV[$DB.kv]) */ FROM $DB.kv;" | sed -n "s/[^0-9]//g;/^[0-9]*$/p" | tail -n1`
if [ $AFTER_BR_COUNT -ne $RECORD_COUNT ]; then
echo "failed to restore, before: $RECORD_COUNT; after: $AFTER_BR_COUNT"
exit 1
fi

run_sql "DROP DATABASE $DB"

echo "TEST $TEST_NAME passed!"
echo "TEST $TEST_NAME passed!"