func (ss *StreamState) initBucketInStream(streamId common.StreamId,
bucket string) {
numVbuckets := ss.config["numVbuckets"].Int()
ss.streamBucketHWTMap[streamId][bucket] = common.NewTsVbuuid(bucket, numVbuckets)
ss.streamBucketInMemTsCountMap[streamId][bucket] = 0
ss.streamBucketNewTsReqdMap[streamId][bucket] = false
ss.streamBucketFlushInProgressTsMap[streamId][bucket] = nil
ss.streamBucketAbortInProgressMap[streamId][bucket] = false
ss.streamBucketTsListMap[streamId][bucket] = list.New()
ss.streamBucketLastFlushedTsMap[streamId][bucket] = nil
ss.streamBucketLastSnapAlignFlushedTsMap[streamId][bucket] = nil
ss.streamBucketFlushEnabledMap[streamId][bucket] = true
ss.streamBucketDrainEnabledMap[streamId][bucket] = true
ss.streamBucketVbStatusMap[streamId][bucket] = NewTimestamp(numVbuckets)
ss.streamBucketVbRefCountMap[streamId][bucket] = NewTimestamp(numVbuckets)
ss.streamBucketRestartVbRetryMap[streamId][bucket] = NewTimestamp(numVbuckets)
ss.streamBucketRestartVbTsMap[streamId][bucket] = nil
ss.streamBucketRestartVbErrMap[streamId][bucket] = false
ss.streamBucketIndexCountMap[streamId][bucket] = 0
ss.streamBucketRepairStopCh[streamId][bucket] = nil
ss.streamBucketTimerStopCh[streamId][bucket] = make(StopChannel)
ss.streamBucketLastPersistTime[streamId][bucket] = time.Now()
ss.streamBucketRestartTsMap[streamId][bucket] = nil
ss.streamBucketLastSnapMarker[streamId][bucket] = common.NewTsVbuuid(bucket, numVbuckets)
ss.streamBucketStatus[streamId][bucket] = STREAM_ACTIVE
logging.Debugf("StreamState::initBucketInStream \n\tNew Bucket %v Added for "+
"Stream %v", bucket, streamId)
}
func newScannerTestHarness() (*scannerTestHarness, error) {
// TODO Set NUM_VBUCKETS = 8 in config
h := new(scannerTestHarness)
h.cmdch = make(chan Message)
h.msgch = make(chan Message)
si, errMsg := NewScanCoordinator(h.cmdch, h.msgch, c.SystemConfig.SectionConfig("indexer.", true))
h.scanner = si.(*scanCoordinator)
if errMsg.GetMsgType() != MSG_SUCCESS {
return nil, (errMsg.(*MsgError)).GetError().cause
}
h.scanner.indexInstMap = make(c.IndexInstMap)
h.scanner.indexPartnMap = make(IndexPartnMap)
// FIXME:
// This is hack to comply with existing timestamp datastructure
// We need to come up with right timestamp datastructrue to be
// used to index queries.
h.scanTS = c.NewTsVbuuid("default", 8)
h.scanTS.Snapshots = [][2]uint64{
[2]uint64{0, 1},
[2]uint64{0, 2},
[2]uint64{0, 3},
[2]uint64{0, 4},
[2]uint64{0, 5},
[2]uint64{0, 6},
[2]uint64{0, 7},
[2]uint64{0, 8},
}
go h.handleScanTimestamps()
return h, nil
}
//initBucketFilter initializes the bucket filter
func (r *mutationStreamReader) initBucketFilter(bucketFilter map[string]*common.TsVbuuid) {
r.syncLock.Lock()
defer r.syncLock.Unlock()
//allocate a new filter for the buckets which don't
//have a filter yet
for b, q := range r.bucketQueueMap {
if _, ok := r.bucketFilterMap[b]; !ok {
logging.Tracef("MutationStreamReader::initBucketFilter Added new filter "+
"for Bucket %v Stream %v", b, r.streamId)
//if there is non-nil filter, use that. otherwise use a zero filter.
if filter, ok := bucketFilter[b]; ok && filter != nil {
r.bucketFilterMap[b] = filter.Copy()
} else {
r.bucketFilterMap[b] = common.NewTsVbuuid(b, int(q.queue.GetNumVbuckets()))
}
r.bucketSyncDue[b] = false
}
}
//remove the bucket filters for which bucket doesn't exist anymore
for b, _ := range r.bucketFilterMap {
if _, ok := r.bucketQueueMap[b]; !ok {
logging.Tracef("MutationStreamReader::initBucketFilter Deleted filter "+
"for Bucket %v Stream %v", b, r.streamId)
delete(r.bucketFilterMap, b)
delete(r.bucketSyncDue, b)
}
}
}
//
// Create a timestamp history for a particular stream, bucket
//
func newTimestampHistory(bucket string) *timestampHistory {
result := ×tampHistory{history: make([]*common.TsVbuuid, TIMESTAMP_HISTORY_COUNT),
last: nil,
current: 0}
result.history[result.current] = common.NewTsVbuuid(bucket, NUM_VB)
return result
}
// ToTsVbuuid converts timestamp from protobuf format to common.TsVbuuid,
// later requires the full set of timestamp.
func (ts *TsVbuuid) ToTsVbuuid(maxVbuckets int) *c.TsVbuuid {
nativeTs := c.NewTsVbuuid(ts.GetBucket(), maxVbuckets)
seqnos, vbuuids, ss := ts.GetSeqnos(), ts.GetVbuuids(), ts.GetSnapshots()
for i, vbno := range ts.GetVbnos() {
nativeTs.Seqnos[vbno] = seqnos[i]
nativeTs.Vbuuids[vbno] = vbuuids[i]
nativeTs.Snapshots[vbno] = [2]uint64{ss[i].GetStart(), ss[i].GetEnd()}
}
return nativeTs
}
//initBucketFilter initializes the bucket filter
func (r *mutationStreamReader) initBucketFilter(bucketFilter map[string]*common.TsVbuuid) {
r.syncLock.Lock()
defer r.syncLock.Unlock()
//allocate a new filter for the buckets which don't
//have a filter yet
for b, q := range r.bucketQueueMap {
if _, ok := r.bucketFilterMap[b]; !ok {
logging.Debugf("MutationStreamReader::initBucketFilter Added new filter "+
"for Bucket %v Stream %v", b, r.streamId)
//if there is non-nil filter, use that. otherwise use a zero filter.
if filter, ok := bucketFilter[b]; ok && filter != nil {
r.bucketFilterMap[b] = filter.Copy()
r.bucketPrevSnapMap[b] = filter.Copy()
//reset vbuuids to 0 in filter. mutations for a vbucket are
//only processed after streambegin is received, which will set
//the vbuuid again.
for i := 0; i < len(filter.Vbuuids); i++ {
r.bucketFilterMap[b].Vbuuids[i] = 0
}
} else {
r.bucketFilterMap[b] = common.NewTsVbuuid(b, int(q.queue.GetNumVbuckets()))
r.bucketPrevSnapMap[b] = common.NewTsVbuuid(b, int(q.queue.GetNumVbuckets()))
}
r.bucketSyncDue[b] = false
}
}
//remove the bucket filters for which bucket doesn't exist anymore
for b, _ := range r.bucketFilterMap {
if _, ok := r.bucketQueueMap[b]; !ok {
logging.Debugf("MutationStreamReader::initBucketFilter Deleted filter "+
"for Bucket %v Stream %v", b, r.streamId)
delete(r.bucketFilterMap, b)
delete(r.bucketPrevSnapMap, b)
delete(r.bucketSyncDue, b)
}
}
}
func (s *storageMgr) addNilSnapshot(idxInstId common.IndexInstId, bucket string) {
if _, ok := s.indexSnapMap[idxInstId]; !ok {
ts := common.NewTsVbuuid(bucket, s.config["numVbuckets"].Int())
snap := &indexSnapshot{
instId: idxInstId,
ts: ts, // nil snapshot should have ZERO Crc64 :)
epoch: true,
}
s.indexSnapMap[idxInstId] = snap
s.notifySnapshotCreation(snap)
}
}
func unmarshallTimestamp(str string) (*common.TsVbuuid, error) {
data, err := base64.StdEncoding.DecodeString(str)
if err != nil {
return nil, err
}
source := new(protobuf.TsVbuuid)
if err := proto.Unmarshal(data, source); err != nil {
return nil, err
}
target := common.NewTsVbuuid(source.GetBucket(), NUM_VB)
for _, vbno := range source.Vbnos {
target.Seqnos[vbno] = source.Seqnos[vbno]
target.Vbuuids[vbno] = source.Vbuuids[vbno]
}
return target, nil
}
func (s *scanCoordinator) newRequest(protoReq interface{},
cancelCh <-chan interface{}) (r *ScanRequest, err error) {
var indexInst *common.IndexInst
r = new(ScanRequest)
r.ScanId = platform.AddUint64(&s.reqCounter, 1)
r.LogPrefix = fmt.Sprintf("SCAN##%d", r.ScanId)
cfg := s.config.Load()
timeout := time.Millisecond * time.Duration(cfg["settings.scan_timeout"].Int())
if timeout != 0 {
r.ExpiredTime = time.Now().Add(timeout)
r.TimeoutCh = time.After(timeout)
}
r.CancelCh = cancelCh
isNil := func(k []byte) bool {
if len(k) == 0 || (!r.isPrimary && string(k) == "[]") {
return true
}
return false
}
newKey := func(k []byte) (IndexKey, error) {
if len(k) == 0 {
return nil, fmt.Errorf("Key is null")
}
if r.isPrimary {
return NewPrimaryKey(k)
} else {
return NewSecondaryKey(k)
}
}
newLowKey := func(k []byte) (IndexKey, error) {
if isNil(k) {
return MinIndexKey, nil
}
return newKey(k)
}
newHighKey := func(k []byte) (IndexKey, error) {
if isNil(k) {
return MaxIndexKey, nil
}
return newKey(k)
}
fillRanges := func(low, high []byte, keys [][]byte) {
var key IndexKey
var localErr error
defer func() {
if err == nil {
err = localErr
}
}()
// range
r.LowBytes = low
r.HighBytes = high
if r.Low, localErr = newLowKey(low); localErr != nil {
localErr = fmt.Errorf("Invalid low key %s (%s)", string(low), localErr)
return
}
if r.High, localErr = newHighKey(high); localErr != nil {
localErr = fmt.Errorf("Invalid high key %s (%s)", string(high), localErr)
return
}
// point query for keys
for _, k := range keys {
r.KeysBytes = append(r.KeysBytes, k)
if key, localErr = newKey(k); localErr != nil {
localErr = fmt.Errorf("Invalid equal key %s (%s)", string(k), localErr)
return
}
r.Keys = append(r.Keys, key)
}
}
setConsistency := func(
cons common.Consistency, vector *protobuf.TsConsistency) {
r.Consistency = &cons
cfg := s.config.Load()
if cons == common.QueryConsistency && vector != nil {
r.Ts = common.NewTsVbuuid("", cfg["numVbuckets"].Int())
// if vector == nil, it is similar to AnyConsistency
for i, vbno := range vector.Vbnos {
r.Ts.Seqnos[vbno] = vector.Seqnos[i]
r.Ts.Vbuuids[vbno] = vector.Vbuuids[i]
}
} else if cons == common.SessionConsistency {
r.Ts = common.NewTsVbuuid("", cfg["numVbuckets"].Int())
r.Ts.Seqnos = vector.Seqnos // full set of seqnos.
r.Ts.Crc64 = vector.GetCrc64()
}
}
setIndexParams := func() {
var localErr error
defer func() {
if err == nil {
err = localErr
}
}()
s.mu.RLock()
defer s.mu.RUnlock()
stats := s.stats.Get()
indexInst, localErr = s.findIndexInstance(r.DefnID)
if localErr == nil {
r.isPrimary = indexInst.Defn.IsPrimary
r.IndexName, r.Bucket = indexInst.Defn.Name, indexInst.Defn.Bucket
r.IndexInstId = indexInst.InstId
if r.Ts != nil {
r.Ts.Bucket = r.Bucket
}
if indexInst.State != common.INDEX_STATE_ACTIVE {
localErr = ErrIndexNotReady
} else {
r.Stats = stats.indexes[r.IndexInstId]
}
}
}
switch req := protoReq.(type) {
case *protobuf.StatisticsRequest:
r.DefnID = req.GetDefnID()
r.ScanType = StatsReq
r.Incl = Inclusion(req.GetSpan().GetRange().GetInclusion())
setIndexParams()
fillRanges(
req.GetSpan().GetRange().GetLow(),
req.GetSpan().GetRange().GetHigh(),
req.GetSpan().GetEquals())
case *protobuf.CountRequest:
r.DefnID = req.GetDefnID()
cons := common.Consistency(req.GetCons())
vector := req.GetVector()
setConsistency(cons, vector)
r.ScanType = CountReq
r.Incl = Inclusion(req.GetSpan().GetRange().GetInclusion())
setIndexParams()
fillRanges(
req.GetSpan().GetRange().GetLow(),
req.GetSpan().GetRange().GetHigh(),
req.GetSpan().GetEquals())
case *protobuf.ScanRequest:
r.DefnID = req.GetDefnID()
cons := common.Consistency(req.GetCons())
vector := req.GetVector()
setConsistency(cons, vector)
r.ScanType = ScanReq
r.Incl = Inclusion(req.GetSpan().GetRange().GetInclusion())
setIndexParams()
fillRanges(
req.GetSpan().GetRange().GetLow(),
req.GetSpan().GetRange().GetHigh(),
req.GetSpan().GetEquals())
r.Limit = req.GetLimit()
case *protobuf.ScanAllRequest:
r.DefnID = req.GetDefnID()
cons := common.Consistency(req.GetCons())
vector := req.GetVector()
setConsistency(cons, vector)
r.ScanType = ScanAllReq
r.Limit = req.GetLimit()
setIndexParams()
default:
err = ErrUnsupportedRequest
}
return
}
// This function gets the list of vb and seqno to repair stream.
// Termination condition for stream repair:
// 1) All vb are in StreamBegin state
// 2) All vb have ref count == 1
// 3) There is no error in stream repair
func (ss *StreamState) getRepairTsForBucket(streamId common.StreamId,
bucket string) (*common.TsVbuuid, bool, []Vbucket) {
// always repair if the last repair is not successful
anythingToRepair := ss.streamBucketRestartVbErrMap[streamId][bucket]
numVbuckets := ss.config["numVbuckets"].Int()
repairTs := common.NewTsVbuuid(bucket, numVbuckets)
var shutdownVbs []Vbucket = nil
var count = 0
hwtTs := ss.streamBucketHWTMap[streamId][bucket]
hasConnError := ss.hasConnectionError(streamId, bucket)
// First step : Find out if there is any StreamEnd or ConnError on any vb.
for i, s := range ss.streamBucketVbStatusMap[streamId][bucket] {
if s == VBS_STREAM_END || s == VBS_CONN_ERROR {
ss.addRepairTs(repairTs, hwtTs, Vbucket(i))
count++
anythingToRepair = true
if hasConnError {
// Make sure that we shutdown vb for BOTH StreamEnd and
// ConnErr. This is to ensure to cover the case where
// indexer may miss a StreamBegin from the new owner
// due to connection error. Dataport will not be able
// to tell indexer that vb needs to start since
// StreamBegin never arrives.
shutdownVbs = append(shutdownVbs, Vbucket(i))
}
}
}
// Second step: Find out if any StreamEnd over max retry limit. If so,
// add it to ShutdownVbs (for shutdown/restart). Only need to do this
// if there is no vb marked with conn error because vb with StreamEnd
// would already be in shutdownVbs, if there is connErr.
if !hasConnError {
for i, s := range ss.streamBucketVbStatusMap[streamId][bucket] {
if s == VBS_STREAM_END {
vbs := ss.streamBucketRestartVbRetryMap[streamId][bucket]
vbs[i] = Seqno(int(vbs[i]) + 1)
if int(vbs[i]) > REPAIR_RETRY_BEFORE_SHUTDOWN {
logging.Debugf("StreamState::getRepairTsForBucket\n\t"+
"Bucket %v StreamId %v Vbucket %v repair is being retried for %v times.",
bucket, streamId, i, vbs[i])
ss.clearRestartVbRetry(streamId, bucket, Vbucket(i))
shutdownVbs = append(shutdownVbs, Vbucket(i))
}
}
}
}
// Third step: If there is nothing to repair, then double check if every vb has
// exactly one vb owner. If not, then the accounting is wrong (most likely due
// to connection error). Make the vb as ConnErr and continue to repair.
// Note: This will also take care of vb in VBS_INIT state.
if !anythingToRepair {
for i, _ := range ss.streamBucketVbStatusMap[streamId][bucket] {
count := ss.streamBucketVbRefCountMap[streamId][bucket][i]
if count != 1 {
logging.Debugf("StreamState::getRepairTsForBucket\n\t"+
"Bucket %v StreamId %v Vbucket %v have ref count (%v != 1). Convert to CONN_ERROR.",
bucket, streamId, i, count)
// Make it a ConnErr such that subsequent retry will
// force a shutdown/restart sequence.
ss.makeConnectionError(streamId, bucket, Vbucket(i))
ss.addRepairTs(repairTs, hwtTs, Vbucket(i))
count++
shutdownVbs = append(shutdownVbs, Vbucket(i))
anythingToRepair = true
}
}
}
// Forth Step: If there is something to repair, but indexer has received StreamBegin for
// all vb, then retry with the last timestamp.
if anythingToRepair && count == 0 {
logging.Debugf("StreamState::getRepairTsForBucket\n\t"+
"Bucket %v StreamId %v previous repair fails. Retry using previous repairTs",
bucket, streamId)
ts := ss.streamBucketRestartVbTsMap[streamId][bucket]
if ts != nil {
repairTs = ts.Copy()
} else {
repairTs = hwtTs.Copy()
}
shutdownVbs = nil
vbnos := repairTs.GetVbnos()
for _, vbno := range vbnos {
shutdownVbs = append(shutdownVbs, Vbucket(vbno))
}
}
if !anythingToRepair {
ss.streamBucketRestartVbTsMap[streamId][bucket] = nil
ss.clearRestartVbError(streamId, bucket)
} else {
ss.streamBucketRestartVbTsMap[streamId][bucket] = repairTs.Copy()
}
ss.adjustNonSnapAlignedVbs(repairTs, streamId, bucket)
return repairTs, anythingToRepair, shutdownVbs
}
