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Open Database as switchable only for client

This commit is contained in:
Andrew Noyes 2019-05-24 10:51:08 -07:00
parent d4578a49d8
commit bc03421d05
3 changed files with 45 additions and 27 deletions
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16
fdbclient/DatabaseContext.h
View File

@ -54,11 +54,17 @@ public:
// For internal (fdbserver) use only
static Database create( Reference<AsyncVar<Optional<ClusterInterface>>> clusterInterface, Reference<ClusterConnectionFile> connFile, LocalityData const& clientLocality );
static Database create( Reference<AsyncVar<ClientDBInfo>> clientInfo, Future<Void> clientInfoMonitor, LocalityData clientLocality, bool enableLocalityLoadBalance, int taskID=TaskDefaultEndpoint, bool lockAware=false, int apiVersion=Database::API_VERSION_LATEST );
static Database create(Reference<AsyncVar<ClientDBInfo>> clientInfo, Future<Void> clientInfoMonitor,
LocalityData clientLocality, bool enableLocalityLoadBalance,
int taskID = TaskDefaultEndpoint, bool lockAware = false,
int apiVersion = Database::API_VERSION_LATEST, bool switchable = false);
~DatabaseContext();
Database clone() const { return Database(new DatabaseContext( cluster, clientInfo, clientInfoMonitor, dbId, taskID, clientLocality, enableLocalityLoadBalance, lockAware, apiVersion )); }
Database clone() const {
return Database(new DatabaseContext(cluster, clientInfo, clientInfoMonitor, dbId, taskID, clientLocality,
enableLocalityLoadBalance, lockAware, apiVersion, switchable));
}
std::pair<KeyRange,Reference<LocationInfo>> getCachedLocation( const KeyRef&, bool isBackward = false );
bool getCachedLocations( const KeyRangeRef&, vector<std::pair<KeyRange,Reference<LocationInfo>>>&, int limit, bool reverse );
@ -104,11 +110,13 @@ public:
// new cluster.
Future<Void> switchConnectionFile(Reference<ClusterConnectionFile> standby);
Future<Void> recreateWatches();
bool switchable = false;
// private:
explicit DatabaseContext(Reference<Cluster> cluster, Reference<AsyncVar<ClientDBInfo>> clientDBInfo,
Future<Void> clientInfoMonitor, Standalone<StringRef> dbId, int taskID, LocalityData const& clientLocality,
bool enableLocalityLoadBalance, bool lockAware, int apiVersion = Database::API_VERSION_LATEST );
Future<Void> clientInfoMonitor, Standalone<StringRef> dbId, int taskID,
LocalityData const& clientLocality, bool enableLocalityLoadBalance, bool lockAware,
int apiVersion = Database::API_VERSION_LATEST, bool switchable = false);
explicit DatabaseContext( const Error &err );

49
fdbclient/NativeAPI.actor.cpp
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@ -174,13 +174,13 @@ std::string unprintable( std::string const& val ) {
}
void DatabaseContext::validateVersion(Version version) {
// Version could be 0 if the INITIALIZE_NEW_DATABASE option is set. In that case, it is illegal to perform any reads.
// We throw client_invalid_operation because the caller didn't directly set the version, so the version_invalid error
// might be confusing.
// Version could be 0 if the INITIALIZE_NEW_DATABASE option is set. In that case, it is illegal to perform any
// reads. We throw client_invalid_operation because the caller didn't directly set the version, so the
// version_invalid error might be confusing.
if (version == 0) {
throw client_invalid_operation();
}
if (version < minAcceptableReadVersion) {
if (switchable && version < minAcceptableReadVersion) {
TEST(true); // Attempted to read a version lower than any this client has seen from the current cluster
throw transaction_too_old();
}
@ -511,17 +511,20 @@ Future<HealthMetrics> DatabaseContext::getHealthMetrics(bool detailed = false) {
return getHealthMetricsActor(this, detailed);
}
DatabaseContext::DatabaseContext(
Reference<Cluster> cluster, Reference<AsyncVar<ClientDBInfo>> clientInfo, Future<Void> clientInfoMonitor, Standalone<StringRef> dbId,
int taskID, LocalityData const& clientLocality, bool enableLocalityLoadBalance, bool lockAware, int apiVersion )
: cluster(cluster), clientInfo(clientInfo), clientInfoMonitor(clientInfoMonitor), dbId(dbId), taskID(taskID), clientLocality(clientLocality), enableLocalityLoadBalance(enableLocalityLoadBalance),
lockAware(lockAware), apiVersion(apiVersion), provisional(false),
transactionReadVersions(0), transactionLogicalReads(0), transactionPhysicalReads(0), transactionCommittedMutations(0), transactionCommittedMutationBytes(0),
transactionsCommitStarted(0), transactionsCommitCompleted(0), transactionsTooOld(0), transactionsFutureVersions(0), transactionsNotCommitted(0),
transactionsMaybeCommitted(0), transactionsResourceConstrained(0), transactionsProcessBehind(0), outstandingWatches(0), transactionTimeout(0.0), transactionMaxRetries(-1),
latencies(1000), readLatencies(1000), commitLatencies(1000), GRVLatencies(1000), mutationsPerCommit(1000), bytesPerCommit(1000), mvCacheInsertLocation(0),
healthMetricsLastUpdated(0), detailedHealthMetricsLastUpdated(0)
{
DatabaseContext::DatabaseContext(Reference<Cluster> cluster, Reference<AsyncVar<ClientDBInfo>> clientInfo,
Future<Void> clientInfoMonitor, Standalone<StringRef> dbId, int taskID,
LocalityData const& clientLocality, bool enableLocalityLoadBalance, bool lockAware,
int apiVersion, bool switchable)
: cluster(cluster), clientInfo(clientInfo), clientInfoMonitor(clientInfoMonitor), dbId(dbId), taskID(taskID),
clientLocality(clientLocality), enableLocalityLoadBalance(enableLocalityLoadBalance), lockAware(lockAware),
apiVersion(apiVersion), switchable(switchable), provisional(false), transactionReadVersions(0),
transactionLogicalReads(0), transactionPhysicalReads(0), transactionCommittedMutations(0),
transactionCommittedMutationBytes(0), transactionsCommitStarted(0), transactionsCommitCompleted(0),
transactionsTooOld(0), transactionsFutureVersions(0), transactionsNotCommitted(0), transactionsMaybeCommitted(0),
transactionsResourceConstrained(0), transactionsProcessBehind(0), outstandingWatches(0), transactionTimeout(0.0),
transactionMaxRetries(-1), latencies(1000), readLatencies(1000), commitLatencies(1000), GRVLatencies(1000),
mutationsPerCommit(1000), bytesPerCommit(1000), mvCacheInsertLocation(0), healthMetricsLastUpdated(0),
detailedHealthMetricsLastUpdated(0) {
metadataVersionCache.resize(CLIENT_KNOBS->METADATA_VERSION_CACHE_SIZE);
maxOutstandingWatches = CLIENT_KNOBS->DEFAULT_MAX_OUTSTANDING_WATCHES;
@ -605,8 +608,12 @@ Database DatabaseContext::create(Reference<AsyncVar<Optional<ClusterInterface>>>
return Database(new DatabaseContext(cluster, clientInfo, clientInfoMonitor, LiteralStringRef(""), TaskDefaultEndpoint, clientLocality, true, false));
}
Database DatabaseContext::create(Reference<AsyncVar<ClientDBInfo>> clientInfo, Future<Void> clientInfoMonitor, LocalityData clientLocality, bool enableLocalityLoadBalance, int taskID, bool lockAware, int apiVersion) {
return Database( new DatabaseContext( Reference<Cluster>(nullptr), clientInfo, clientInfoMonitor, LiteralStringRef(""), taskID, clientLocality, enableLocalityLoadBalance, lockAware, apiVersion ) );
Database DatabaseContext::create(Reference<AsyncVar<ClientDBInfo>> clientInfo, Future<Void> clientInfoMonitor,
LocalityData clientLocality, bool enableLocalityLoadBalance, int taskID,
bool lockAware, int apiVersion, bool switchable) {
return Database(new DatabaseContext(Reference<Cluster>(nullptr), clientInfo, clientInfoMonitor,
LiteralStringRef(""), taskID, clientLocality, enableLocalityLoadBalance,
lockAware, apiVersion, switchable));
}
DatabaseContext::~DatabaseContext() {
@ -818,6 +825,7 @@ Reference<ClusterConnectionFile> DatabaseContext::getConnectionFile() {
}
Future<Void> DatabaseContext::switchConnectionFile(Reference<ClusterConnectionFile> standby) {
ASSERT(switchable);
return switchConnectionFileImpl(standby, this);
}
@ -834,10 +842,13 @@ Database Database::createDatabase( Reference<ClusterConnectionFile> connFile, in
DatabaseContext *db;
if(preallocatedDb) {
db = new (preallocatedDb) DatabaseContext(cluster, clientInfo, clientInfoMonitor, LiteralStringRef(""), TaskDefaultEndpoint, clientLocality, true, false, apiVersion);
db = new (preallocatedDb)
DatabaseContext(cluster, clientInfo, clientInfoMonitor, LiteralStringRef(""), TaskDefaultEndpoint,
clientLocality, true, false, apiVersion, /* switchable */ true);
}
else {
db = new DatabaseContext(cluster, clientInfo, clientInfoMonitor, LiteralStringRef(""), TaskDefaultEndpoint, clientLocality, true, false, apiVersion);
db = new DatabaseContext(cluster, clientInfo, clientInfoMonitor, LiteralStringRef(""), TaskDefaultEndpoint,
clientLocality, true, false, apiVersion, /* switchable */ true);
}
return Database(db);

3
fdbserver/storageserver.actor.cpp
View File

@ -1831,8 +1831,7 @@ ACTOR Future<Standalone<RangeResultRef>> tryGetRange( Database cx, Version versi
if( *isTooOld )
throw transaction_too_old();
cx->minAcceptableReadVersion =
std::min(cx->minAcceptableReadVersion, version); // Suppress minAcceptableReadVersion check
ASSERT(!cx->switchable);
tr.setVersion( version );
limits.minRows = 0;