Fix memory leak in secondary, cleanup code.

mdb/collection.go

@@ -1,7 +1,6 @@
 package mdb
 
 import (
-	"bytes"
 	"encoding/json"
 	"errors"
 	"hash/crc64"
@@ -25,8 +24,6 @@ type Collection[T any] struct {
 	uniqueIndices []*Index[T]
 
 	ByID *Index[T]
-
-	buf *bytes.Buffer
 }
 
 type CollectionConfig[T any] struct {
@@ -67,7 +64,6 @@ func NewCollection[T any](db *Database, name string, conf *CollectionConfig[T])
 		validate:      conf.Validate,
 		indices:       []*Index[T]{},
 		uniqueIndices: []*Index[T]{},
-		buf:           &bytes.Buffer{},
 	}
 
 	db.addCollection(c.collectionID, c, &collectionState[T]{

mdb/db-rep.go

@@ -99,6 +99,7 @@ func (db *Database) repApply(rec wal.Record) (err error) {
 	}
 	tx.seqNum = rec.SeqNum
 	tx.timestampMS = rec.TimestampMS
+	tx.setReadOnly()
 	db.snapshot.Store(tx)
 	return nil
 }

mdb/db-testrunner_test.go

@@ -72,7 +72,7 @@ func testRunner_testCase(t *testing.T, testCase DBTestCase) {
 	}
 
 	// TODO: Why is this necessary?
-	time.Sleep(time.Second)
+	//time.Sleep(time.Second)
 	finalStep := testCase.Steps[len(testCase.Steps)-1]
 
 	secondarySnapshot := db2.Snapshot()

mdb/txaggregator.go

@@ -1,92 +0,0 @@
-package mdb
-
-/*
-type txAggregator struct {
-	Stop     chan struct{}
-	Done     *sync.WaitGroup
-	ModChan  chan txMod
-	W        *cswal.Writer
-	Index    *pagefile.Index
-	Snapshot *atomic.Pointer[Snapshot]
-}
-
-func (p txAggregator) Run() {
-	defer p.Done.Done()
-	defer p.W.Close()
-
-	var (
-		tx       *Snapshot
-		mod      txMod
-		rec      cswal.Record
-		err      error
-		toNotify = make([]chan error, 0, 1024)
-	)
-
-READ_FIRST:
-
-	toNotify = toNotify[:0]
-
-	select {
-	case mod = <-p.ModChan:
-		goto BEGIN
-	case <-p.Stop:
-		goto END
-	}
-
-BEGIN:
-
-	tx = p.Snapshot.Load().begin()
-	goto APPLY_MOD
-
-CLONE:
-
-	tx = tx.clone()
-	goto APPLY_MOD
-
-APPLY_MOD:
-
-	if err = mod.Update(tx); err != nil {
-		mod.Resp <- err
-		goto ROLLBACK
-	}
-
-	toNotify = append(toNotify, mod.Resp)
-	goto NEXT
-
-ROLLBACK:
-
-	if len(toNotify) == 0 {
-		goto READ_FIRST
-	}
-
-	tx = tx.rollback()
-	goto NEXT
-
-NEXT:
-
-	select {
-	case mod = <-p.ModChan:
-		goto CLONE
-	default:
-		goto WRITE
-	}
-
-WRITE:
-
-	rec, err = writeChangesToWAL(tx.changes, p.Index, p.W)
-	if err == nil {
-		tx.seqNum = rec.SeqNum
-		tx.updatedAt = rec.CreatedAt
-		tx.setReadOnly()
-		p.Snapshot.Store(tx)
-	}
-
-	for i := range toNotify {
-		toNotify[i] <- err
-	}
-
-	goto READ_FIRST
-
-END:
-}
-*/