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add knob

This commit is contained in:
Xiaoxi Wang 2021-06-23 05:49:55 +00:00
parent 3602ec80fb
commit 7b713f7fd2
3 changed files with 9 additions and 4 deletions
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1
fdbclient/ServerKnobs.cpp
View File

@ -210,6 +210,7 @@ void ServerKnobs::initialize(Randomize _randomize, ClientKnobs* clientKnobs, IsS
init( ALL_DATA_REMOVED_DELAY, 1.0 );
init( INITIAL_FAILURE_REACTION_DELAY, 30.0 ); if( randomize && BUGGIFY ) INITIAL_FAILURE_REACTION_DELAY = 0.0;
init( CHECK_TEAM_DELAY, 30.0 );
init( PERPETUAL_WIGGLE_DELAY, 50.0 );
init( LOG_ON_COMPLETION_DELAY, DD_QUEUE_LOGGING_INTERVAL );
init( BEST_TEAM_MAX_TEAM_TRIES, 10 );
init( BEST_TEAM_OPTION_COUNT, 4 );

1
fdbclient/ServerKnobs.h
View File

@ -160,6 +160,7 @@ public:
double ALL_DATA_REMOVED_DELAY;
double INITIAL_FAILURE_REACTION_DELAY;
double CHECK_TEAM_DELAY;
double PERPETUAL_WIGGLE_DELAY;
double LOG_ON_COMPLETION_DELAY;
int BEST_TEAM_MAX_TEAM_TRIES;
int BEST_TEAM_OPTION_COUNT;

11
fdbserver/DataDistribution.actor.cpp
View File

@ -3936,14 +3936,17 @@ ACTOR Future<Void> updateNextWigglingStoragePID(DDTeamCollection* teamCollection
ACTOR Future<Void> perpetualStorageWiggleIterator(AsyncVar<bool>* stopSignal,
FutureStream<Void> finishStorageWiggleSignal,
DDTeamCollection* teamCollection) {
state int lastFinishTime = now();
loop {
choose {
when(wait(stopSignal->onChange())) {}
when(waitNext(finishStorageWiggleSignal)) {
// there must not have other teams to place wiggled data
while (teamCollection->server_info.size() <= teamCollection->configuration.storageTeamSize ||
teamCollection->machine_info.size() < teamCollection->configuration.storageTeamSize) {
wait(delayJittered(SERVER_KNOBS->CHECK_TEAM_DELAY));
state bool takeRest = true; // delay to avoid delete and update ServerList too frequently
while (takeRest) {
wait(delayJittered(SERVER_KNOBS->PERPETUAL_WIGGLE_DELAY));
// there must not have other teams to place wiggled data
takeRest = teamCollection->server_info.size() <= teamCollection->configuration.storageTeamSize ||
teamCollection->machine_info.size() < teamCollection->configuration.storageTeamSize;
}
wait(updateNextWigglingStoragePID(teamCollection));
}