infoschema: fix the issue txn state size is not defined (#53801) (#53825

)

close #53026

pkg/infoschema/tables.go

@@ -1527,7 +1527,7 @@ var tableTiDBTrxCols = []columnInfo{
 	{name: txninfo.StartTimeStr, tp: mysql.TypeTimestamp, decimal: 6, size: 26, comment: "Start time of the transaction"},
 	{name: txninfo.CurrentSQLDigestStr, tp: mysql.TypeVarchar, size: 64, comment: "Digest of the sql the transaction are currently running"},
 	{name: txninfo.CurrentSQLDigestTextStr, tp: mysql.TypeBlob, size: types.UnspecifiedLength, comment: "The normalized sql the transaction are currently running"},
-	{name: txninfo.StateStr, tp: mysql.TypeEnum, enumElems: txninfo.TxnRunningStateStrs, comment: "Current running state of the transaction"},
+	{name: txninfo.StateStr, tp: mysql.TypeEnum, size: 16, enumElems: txninfo.TxnRunningStateStrs, comment: "Current running state of the transaction"},
 	{name: txninfo.WaitingStartTimeStr, tp: mysql.TypeTimestamp, decimal: 6, size: 26, comment: "Current lock waiting's start time"},
 	{name: txninfo.MemBufferKeysStr, tp: mysql.TypeLonglong, size: 64, comment: "How many entries are in MemDB"},
 	{name: txninfo.MemBufferBytesStr, tp: mysql.TypeLonglong, size: 64, comment: "MemDB used memory"},

pkg/infoschema/test/clustertablestest/tables_test.go

@@ -1228,6 +1228,8 @@ func TestTiDBTrx(t *testing.T) {
 			// `WAITING_START_TIME` will not be affected by time_zone, it is in memory and we assume that the system time zone will not change.
 			blockTime2.Format(types.TimeFSPFormat)+
 			" 0 19 10 user1 db1 [\"sql1\",\"sql2\",\""+digest.String()+"\"] "))
+	tk.MustQuery(`select state from information_schema.tidb_trx as trx  union select state from information_schema.tidb_trx as trx`).Sort().
+		Check(testkit.Rows(txninfo.TxnRunningStateStrs[txninfo.TxnIdle], txninfo.TxnRunningStateStrs[txninfo.TxnLockAcquiring]))
 
 	rows := tk.MustQuery(`select WAITING_TIME from information_schema.TIDB_TRX where WAITING_TIME is not null`)
 	require.Len(t, rows.Rows(), 1)