func (s *session) Retry() error {
s.retrying = true
nh := s.history.clone()
// Debug infos.
if len(nh.history) == 0 {
s.debugInfos[retryEmptyHistoryList] = true
} else {
s.debugInfos[retryEmptyHistoryList] = false
}
defer func() {
s.history.history = nh.history
s.retrying = false
}()
if forUpdate := s.Value(forupdate.ForUpdateKey); forUpdate != nil {
return errors.Errorf("can not retry select for update statement")
}
var err error
retryCnt := 0
for {
s.resetHistory()
s.FinishTxn(true)
success := true
for _, sr := range nh.history {
st := sr.st
// Skip prepare statement
if !needRetry(st) {
continue
}
log.Warnf("Retry %s", st.OriginText())
switch st.(type) {
case *stmts.ExecuteStmt:
_, err = runStmt(s, st, sr.params...)
default:
_, err = runStmt(s, st)
}
if err != nil {
if kv.IsRetryableError(err) {
success = false
break
}
log.Warnf("session:%v, err:%v", s, err)
return errors.Trace(err)
}
}
if success {
err = s.FinishTxn(false)
if !kv.IsRetryableError(err) {
break
}
}
retryCnt++
if (s.maxRetryCnt != unlimitedRetryCnt) && (retryCnt >= s.maxRetryCnt) {
return errors.Trace(err)
}
kv.BackOff(retryCnt)
}
return err
}
func (s *session) Retry() error {
variable.GetSessionVars(s).RetryInfo.Retrying = true
nh := s.history.clone()
// Debug infos.
if len(nh.history) == 0 {
s.debugInfos[retryEmptyHistoryList] = true
} else {
s.debugInfos[retryEmptyHistoryList] = false
}
defer func() {
s.history.history = nh.history
variable.GetSessionVars(s).RetryInfo.Retrying = false
}()
if forUpdate := s.Value(forupdate.ForUpdateKey); forUpdate != nil {
return errors.Errorf("can not retry select for update statement")
}
var err error
retryCnt := 0
for {
variable.GetSessionVars(s).RetryInfo.Attempts = retryCnt + 1
s.resetHistory()
log.Info("RollbackTxn for retry txn.")
err = s.RollbackTxn()
if err != nil {
// TODO: handle this error.
log.Errorf("rollback txn failed, err:%v", errors.ErrorStack(err))
}
success := true
variable.GetSessionVars(s).RetryInfo.ResetOffset()
for _, sr := range nh.history {
st := sr.st
log.Warnf("Retry %s", st.OriginText())
_, err = runStmt(s, st)
if err != nil {
if kv.IsRetryableError(err) {
success = false
break
}
log.Warnf("session:%v, err:%v", s, err)
return errors.Trace(err)
}
}
if success {
err = s.CommitTxn()
if !kv.IsRetryableError(err) {
break
}
}
retryCnt++
if (s.maxRetryCnt != unlimitedRetryCnt) && (retryCnt >= s.maxRetryCnt) {
return errors.Trace(err)
}
kv.BackOff(retryCnt)
}
return err
}
func (s *session) Retry() error {
if s.sessionVars.TxnCtx.ForUpdate {
return errors.Errorf("can not retry select for update statement")
}
s.sessionVars.RetryInfo.Retrying = true
defer func() {
s.sessionVars.RetryInfo.Retrying = false
}()
nh := getHistory(s)
var err error
retryCnt := 0
for {
PrepareTxnCtx(s)
success := true
s.sessionVars.RetryInfo.ResetOffset()
for _, sr := range nh.history {
st := sr.st
txt := st.OriginText()
if len(txt) > sqlLogMaxLen {
txt = txt[:sqlLogMaxLen]
}
log.Warnf("Retry %s (len:%d)", txt, len(st.OriginText()))
_, err = st.Exec(s)
if err != nil {
if s.isRetryableError(err) {
success = false
break
}
log.Warnf("session:%v, err:%v", s, err)
return errors.Trace(err)
}
}
if success {
err = s.doCommit()
if !s.isRetryableError(err) {
break
}
}
retryCnt++
if (s.maxRetryCnt != unlimitedRetryCnt) && (retryCnt >= s.maxRetryCnt) {
return errors.Trace(err)
}
kv.BackOff(retryCnt)
}
return err
}
