export: don't +1 TSO when set GC safepoint (pingcap#290)

tisonkun · Jul 6, 2021 · 3cef509 · 3cef509
1 parent 148e1bd
commit 3cef509
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/dumpling/v4/export/sql.go b/dumpling/v4/export/sql.go
@@ -967,7 +967,7 @@ func parseSnapshotToTSO(pool *sql.DB, snapshot string) (uint64, error) {
 	if !tso.Valid {
 		return 0, errors.Errorf("snapshot %s format not supported. please use tso or '2006-01-02 15:04:05' format time", snapshot)
 	}
-	return (uint64(tso.Int64)<<18)*1000 + 1, nil
+	return (uint64(tso.Int64) << 18) * 1000, nil
 }
 
 func buildWhereCondition(conf *Config, where string) string {

diff --git a/dumpling/v4/export/sql_test.go b/dumpling/v4/export/sql_test.go
@@ -317,7 +317,7 @@ func (s *testSQLSuite) TestParseSnapshotToTSO(c *C) {
 		WillReturnRows(sqlmock.NewRows([]string{`unix_timestamp("2020/07/18 20:31:50")`}).AddRow(1595075510))
 	tso, err := parseSnapshotToTSO(db, snapshot)
 	c.Assert(err, IsNil)
-	c.Assert(tso, Equals, (unixTimeStamp<<18)*1000+1)
+	c.Assert(tso, Equals, (unixTimeStamp<<18)*1000)
 	c.Assert(mock.ExpectationsWereMet(), IsNil)
 
 	// generate columns not valid snapshot