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Removed String() call in favor of variable substitution. (#9829) #9949

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Removed String() call in favor of variable substitution. (#9829) #9949

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15 changes: 15 additions & 0 deletions dm/pkg/binlog/position.go
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Original file line number Diff line number Diff line change
Expand Up @@ -355,9 +355,24 @@
// -1, true if gSet1 is less than gSet2
//
// but if can't compare gSet1 and gSet2, will returns 0, false.
<<<<<<< HEAD

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syntax error: non-declaration statement outside function body

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syntax error: non-declaration statement outside function body
func CompareGTID(gSet1, gSet2 gtid.Set) (int, bool) {
gSetIsEmpty1 := gSet1 == nil || len(gSet1.String()) == 0
gSetIsEmpty2 := gSet2 == nil || len(gSet2.String()) == 0
=======

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syntax error: unexpected ==, expecting }

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syntax error: unexpected ==, expecting }
var (
emptyMySQLGTIDSet, _ = gmysql.ParseMysqlGTIDSet("")
emptyMariaDBGTIDSet, _ = gmysql.ParseMariadbGTIDSet("")
)

func CheckGTIDSetEmpty(gSet gmysql.GTIDSet) bool {
return gSet == nil || gSet.Equal(emptyMySQLGTIDSet) || gSet.Equal(emptyMariaDBGTIDSet)
}

func CompareGTID(gSet1, gSet2 gmysql.GTIDSet) (int, bool) {
gSetIsEmpty1 := CheckGTIDSetEmpty(gSet1)
gSetIsEmpty2 := CheckGTIDSetEmpty(gSet2)
>>>>>>> 5ec0b15ee1 (Removed String() call in favor of variable substitution. (#9829))

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syntax error: unexpected >>, expecting }

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exponent has no digits

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invalid character U+0023 '#'

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syntax error: unexpected >>, expecting }

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exponent has no digits

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invalid character U+0023 '#'

switch {
case gSetIsEmpty1 && gSetIsEmpty2:
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2 changes: 1 addition & 1 deletion dm/syncer/checkpoint.go
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Expand Up @@ -634,7 +634,7 @@ func (cp *RemoteCheckPoint) IsOlderThanTablePoint(table *filter.Table, location
}
oldLocation := point.MySQLLocation()
// if we update enable-gtid = false to true, we need to compare binlog position instead of GTID before we save table point
cmpGTID := cp.cfg.EnableGTID && !(oldLocation.GTIDSetStr() == "" && binlog.ComparePosition(oldLocation.Position, binlog.MinPosition) > 0)
cmpGTID := cp.cfg.EnableGTID && !(binlog.CheckGTIDSetEmpty(oldLocation.GetGTID()) && binlog.ComparePosition(oldLocation.Position, binlog.MinPosition) > 0)
cp.logCtx.L().Debug("compare table location whether is newer", zap.Stringer("location", location), zap.Stringer("old location", oldLocation), zap.Bool("cmpGTID", cmpGTID))

return binlog.CompareLocation(location, oldLocation, cmpGTID) <= 0
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2 changes: 1 addition & 1 deletion dm/syncer/syncer.go
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Expand Up @@ -4057,7 +4057,7 @@ func (s *Syncer) adjustGlobalPointGTID(tctx *tcontext.Context) (bool, error) {
// 2. location already has GTID position
// 3. location is totally new, has no position info
// 4. location is too early thus not a COMMIT location, which happens when it's reset by other logic
if !s.cfg.EnableGTID || location.GTIDSetStr() != "" || location.Position.Name == "" || location.Position.Pos == 4 {
if !s.cfg.EnableGTID || !binlog.CheckGTIDSetEmpty(location.GetGTID()) || location.Position.Name == "" || location.Position.Pos == 4 {
return false, nil
}
// set enableGTID to false for new streamerController
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