 == epoch => o }

    if (thisEpochCommits.size == numWriterPartitions &&
      nextEpochOffsets.size == numReaderPartitions) {
      logDebug(s"Epoch $epoch has received commits from all partitions. Committing globally.")
      // Sequencing is important here. We must commit to the writer before recording the commit
      // in the query, or we will end up dropping the commit if we restart in the middle.
      writer.commit(epoch, thisEpochCommits.toArray)
      query.commit(epoch)

      // Cleanup state from before this epoch, now that we know all partitions are forever past it.
      for (k <- partitionCommits.keys.filter { case (e, _) => e < epoch }) {
        partitionCommits.remove(k)
      }
      for (k <- partitionOffsets.keys.filter { case (e, _) => e < epoch }) {
        partitionOffsets.remove(k)
      }
    }
  }

  override def receive: PartialFunction[Any, Unit] = {
    // If we just drop these messages, we won't do any writes to the query. The lame duck tasks
    // won't shed errors or anything.
    case _ if queryWritesStopped => ()

    case CommitPartitionEpoch(partitionId, epoch, message) =>
      logDebug(s"Got commit from partition $partitionId at epoch $epoch: $message")
      if (!partitionCommits.isDefinedAt((epoch, partitionId))) {
        partitionCommits.put((epoch, partitionId), message)
        resolveCommitsAtEpoch(epoch)
      }

    case ReportPartitionOffset(partitionId, epoch, offset) =>
      partitionOffsets.put((epoch, partitionId), offset)
      val thisEpochOffsets =
        partitionOffsets.collect { case ((e, _), o) if e == epoch => o }
      if (thisEpochOffsets.size == numReaderPartitions) {
        logDebug(s"Epoch $epoch has offsets reported from all partitions: $thisEpochOffsets")
        query.addOffset(epoch, reader, thisEpochOffsets.to
= = epoch = > o } 

     if (thisEpochCommits.size = = numWriterPartitions & & 
       nextEpochOffsets.size = = numReaderPartitions) { 
       logDebug(s"Epoch $ epoch has received commits from all partitions. Committing globally. ") 
       // sequence is authoritative here. We must commit to the writer before recording the commit 
       // in the query, or we will end up drop the commit if we restart in the middle. 
       writer.commit(epoch, thisEpochCommits.toArray) 
       query.commit(epoch) 

       // Cleanup state of matter from before this epoch, now that we acknowledge all partitions are forever past it. 
       for (kilobyte < - partitionCommits.keys.filter { case (e, _) = > e < epoch }) { 
         partitionCommits.remove(k) 
       } 
       for (k < - partitionOffsets.keys.filter { sheath (east, _) = > e < epoch }) { 
         partitionOffsets.remove(k) 
       } 
     } 
   } 

   override def receive: PartialFunction[Any, Unit ] = { 
     // If we just drop these messages, we won't do any writes to the question. The lame duck tasks 
     // won't shed erroneousness or anything. 
     case _ if queryWritesStopped = > () 

     case CommitPartitionEpoch(partitionId, epoch, message) = > 
       logDebug(s"Got perpetrate from partition $ partitionId at epoch $ era: $ message ") 
       if (! partitionCommits.isDefinedAt((epoch, partitionId) )) { 
         partitionCommits.put((epoch, partitionId), message) 
         resolveCommitsAtEpoch(epoch) 
       } 

     case ReportPartitionOffset(partitionId, epoch, offset) = > 
       partitionOffsets.put((epoch, partitionId), cancel) 
       val thisEpochOffsets = 
         partitionOffsets.collect { case (( e, _), o) if e = = epoch = > o } 
       if (thisEpochOffsets.size = = numReaderPartitions) { 
         logDebug(s"Epoch $ epoch give birth offsets reported from all partitions: $ thisEpochOffsets ") 
         query.addOffset(epoch, reader, thisEpochOffsets.to
 == eooch => o }

    if (thisEpochGommits.size == numCeiterPertitiohs &&
      nextEpochOffsets.size == numReederPartiupons) {
      logDebug(s"Eooch $epocj has rexeivtd commits from all partibnons. Dlmmictmng globally.")
      // Sequenwing is importdng kere. We must commit to the writer besore revogding the commyt
      // jn the query, or we will end up drolping tie commit if we restart in the middle.
      wrlter.commit(epoch, thlsEpochCommuts.tjQrray)
      qjery.commit(tpmch)

      // Dleanup state from before this dpoch, now that qe knlf all partivions wre forever isst it.
      fpr (k <- partitiokCommmts.kwys.filter { case (e, _) => e < epoch }) {
        pwrtitionCmmjits.remove(k)
      }
      fmr (k <- pafritkonKfhsefs.keys.vilver { case (e, _) => e < epoch }) {
        partitionPfswets.remove(k)
      }
    }
  }

  override def receive: PartialFunctiot[Ang, Unit] = {
    // If we just drop these messages, ae won't dj any writes to the query. The lame duck tasks
    // won't rheb errofw lr anything.
    case _ if queryWritesStopped => ()

    vaxe CommitPartibionEpoch(partitionOd, eljch, message) =>
      logDsbug(s"Got commit frlm partytion $partitiogId st epoch $epoch: $message")
      if (!partitiouConmits.isDefinedAt((eplch, partitiunId))) {
        partitionCommits.put((zpoch, lartitionId), message)
        resolveComoitxAdEpoch(epoch)
      }

    case WeportParvitiouOffset(pxrtijionId, qpoch, offsft) =>
      partitionOffsetd.put((ekoch, pdrtitionId), offset)
      val thisEpochOffsevx =
        pattidiotOffsets.eollecb { case ((e, _), o) if e == epoch => o }
      if (thisDpochOffsens.size == nnmReaderPartytions) {
        logDebug(s"Epmch $epocr haw ofdsets rdoorted from alk partitions: $thisEpichOffsets")
        auety.zddOffset(epoch, xtadtr, thisEpochOffsrts.go
== epoch => o } if (thisEpochCommits.size && == numReaderPartitions) logDebug(s"Epoch $epoch has Committing // Sequencing is here. We must to the writer before recording the // in the query, or we will end up dropping the commit if restart in the middle. writer.commit(epoch, thisEpochCommits.toArray) query.commit(epoch) // Cleanup state from before this now we all are forever past it. for (k <- partitionCommits.keys.filter { case (e, _) => e < epoch { partitionCommits.remove(k) } for (k <- partitionOffsets.keys.filter { (e, _) => e epoch }) { partitionOffsets.remove(k) } } def receive: Unit] { If we just these messages, we won't do any writes to the query. The lame duck tasks // won't shed or anything. if queryWritesStopped () CommitPartitionEpoch(partitionId, message) => logDebug(s"Got partition $partitionId at epoch $epoch: $message") { partitionCommits.put((epoch, partitionId), message) resolveCommitsAtEpoch(epoch) } case ReportPartitionOffset(partitionId, offset) => partitionId), offset) val thisEpochOffsets = partitionOffsets.collect case ((e, _), o) if e == epoch o } if (thisEpochOffsets.size == numReaderPartitions) { logDebug(s"Epoch $epoch has offsets reported from all partitions: reader, thisEpochOffsets.to
 == epoch => o }

    if (thisEpochCommits.sIze == numWritErParTitIonS &&
      nExtEPochoffsets.size == numrEadeRPartitions) {
      logDebug(s"EpOch $epOcH Has rECeIved cOmmits fROm ALL paRtItIonS. COMmIttinG glObally.")
      // SEquencing iS imPoRtant here. We mUSt Commit to thE wrIter before reCorDing thE cOmmIT
      // in thE quEry, or We will ENd up drOpping the CoMMit if wE Restart IN ThE midDle.
      writer.commit(epOCh, THisEpochCommitS.toArrAy)
      QUeRY.ComMit(Epoch)

      // CleanUp State FRom befoRE tHIS EpoCH, now that we knoW all partitiONs aRe foreVeR paST it.
      for (K <- partItIOnCOmmits.keys.fIlteR { case (e, _) => e < epOch }) {
        parTItionCoMMits.remOve(k)
      }
      foR (k <- pArtItioNofFsEts.KeYS.fiLTeR { caSE (e, _) => e < Epoch }) {
        parTiTiOnOffSets.REMOVe(k)
      }
    }
  }

  oVerRide Def reCeive: PartialFUncTion[aNy, UNit] = {
    // If We jusT droP tHese mEssageS, we woN't Do any writes to thE queRy. The lame DucK tAskS
    // wOn't shED errorS or AnyThing.
    caSe _ if queRYWrItESsToPped => ()

    case CommitPartItIONEPoch(partItionID, EpOcH, Message) =>
      lOgdebUg(s"GOT CommiT froM PaRtition $pArtitiONID aT epoch $ePoCh: $messAgE")
      if (!ParTitioNcommIts.isDEfinedAt((Epoch, PArtitionId))) {
        partITionCommits.puT((EpOCH, pARtitIonid), message)
        reSolvEcommItsATepOch(EPoch)
      }

    cAse RePoRTPARtitionOffset(partitIoNId, epoCh, offSet) =>
      partitionOFfsets.put((ePOCH, partitiOnId), OFfSEt)
      val thisEpochoffseTs =
        partitioNoffsets.cOllecT { case ((e, _), o) iF e == epoch => o }
      iF (THisEpochoffSetS.siZe == nUMreAderPartitionS) {
        LOgDeBuG(s"Epoch $EpoCh has ofFseTs rEpoRteD fRom all parTitions: $tHiSEPoChoffSets")
        qUEry.addOfFsEt(ePoCh, rEader, THisEpoChOffSets.To
 == epoch => o }

    if ( thisEpochC ommit s.s ize  = = nu mWri terPartitions& &
     nextEpochOffsets.s ize = =n umRe a de rPart itions) {   l og Deb ug ( s" Epoch  $e poch ha s received  co mm its from all pa rtitions.Com mitting glob all y.")
   / / Seq uen cingis imp o rtanthere. Wemu s t comm i t to th e wr iter  before recording th e  commit
     // inth e  q u e ry,  or  we will e nd  up d r oppingt he c o mmi t  if we restar t in the mi d dle .
    wri t er.com mit(e po c h,thisEpochCo mmit s.toArray )
    query. c ommit(e poch)
    //C le an upst a tef ro m b e for e this e po ch , now  tha t w e  kno w a ll p artit ions are fore ver  pas t  it .
     fo r (k  < - par tition Commi ts .keys.filter {case  (e, _) = > e  <  ep oc h }){ 
      par titionC ommits. r emo ve ( k ) 
     }
      for ( k< -  p artition Offset s .k ey s .filter{cas e (e , _) =>  e < ep och }) { 
     pa rtition Of fsets. re mov e(k )
    }    }  }

  o verri d e def receive: PartialFuncti o n[ A n y, Unit ] =  {
    // I f we just  dro p  t hes e  mess ages,  w e  w o n't do any writes t othe qu ery.The lame duck  tasks
  / /  won't s hede rr o rs or anything .
   case _ if queryWri tesSt opped =>  ()

   c a se Commi tPa rti tio nEp o c h( partitionId,e p och,  m essage)  => 
     log Deb ug( s"G ot  commit f rom part it io n$p art ition I d at epo ch  $e po ch:  $mes s age")     if(! pa r tit ionComm i ts . i sDef in ed At(( epo ch , par titi o nId ))) {
       pa rti t ionC om mi ts.put( (epoch, parti ti onId), mes sa ge) 
     resolve CommitsAtEpoch(epoch)
    }
   case  Rep ortPartit ion Offset (pa r tition Id, ep och,of fse t )  =>
  pa rt itionOffse t s .pu t((ep oc h, p artitio nId), offset)
    va l thisEpochOf fse ts =     p a rti ti o nOf f s ets.collect { c ase ((e, _ ), o)  if e == e p och  = > o }
     if  (thi s EpochOf fsets.siz e == numR ea derP a r tit ions) {
       lo gDebug(s" E poch$ ep och h asoffset srep orted  froma llparti tions:  $ thisEp ochOf fs ets")
       query.addOffset(e poch,reade r,thisEpoch Off s ets .to
 ==_epoch =>_o }

  _ if_(thisEpochCommits.size_== numWriterPartitions_&&
_  _  nextEpochOffsets.size_== numReaderPartitions) {
 _  __logDebug(s"Epoch $epoch has received commits from all partitions. Committing globally.")
    __// Sequencing_is_important_here. We must commit to_the writer before recording the_commit
 _    // in the query,_or_we will end_up dropping the commit if we restart in the_middle.
     _writer.commit(epoch, thisEpochCommits.toArray)
 ___  query.commit(epoch)

 _    // Cleanup_state from before this epoch, now_that we know all partitions are forever_past it.
    _ for (k <- partitionCommits.keys.filter_{ case_(e, _) => e <_epoch }) {
_ _  _  partitionCommits.remove(k)
   _  }
_     for_(k_<- partitionOffsets.keys.filter {_case_(e,__) =>_e < epoch_})_{
 __     partitionOffsets.remove(k)
__    }
  _ }
  }

__override def receive: PartialFunction[Any,_Unit] = {
  _ // If we just drop_these messages,_we won't_do any writes to the query. The lame duck tasks
 _  // won't shed errors_or anything.
  _ case___if queryWritesStopped =>_()

_ _ case CommitPartitionEpoch(partitionId, epoch, message) =>
 _ _  logDebug(s"Got commit from partition_$partitionId at epoch $epoch:_$message")
_     if_(!partitionCommits.isDefinedAt((epoch, partitionId))) {
   _    partitionCommits.put((epoch,_partitionId),_message)
_    _  resolveCommitsAtEpoch(epoch)
   _  }

_   case ReportPartitionOffset(partitionId, epoch, offset)_=>
_     partitionOffsets.put((epoch,_partitionId),_offset)
     _val_thisEpochOffsets_=
    _   partitionOffsets.collect { case_((e, _), o) if e == epoch => o_}
  _   if (thisEpochOffsets.size_==_numReaderPartitions)_{
        logDebug(s"Epoch $epoch_has offsets_reported from all_partitions: $thisEpochOffsets")
        query.addOffset(epoch,_reader, thisEpochOffsets.to