Use a throttled logger for exceeded memory warnings (#15424)

Signed-off-by: Manan Gupta <manan@planetscale.com> Signed-off-by: Florent Poinsard <florent.poinsard@outlook.fr> Co-authored-by: Florent Poinsard <florent.poinsard@outlook.fr>
vitessio · Mar 26, 2024 · bec2180 · bec2180
1 parent 6976baa
commit bec2180
Showing 1 changed file with 16 additions and 2 deletions.
diff --git a/go/vt/vtgate/executor.go b/go/vt/vtgate/executor.go
@@ -33,13 +33,15 @@ import (
 	"vitess.io/vitess/go/acl"
 	"vitess.io/vitess/go/cache/theine"
 	"vitess.io/vitess/go/mysql/collations"
+	"vitess.io/vitess/go/mysql/sqlerror"
 	"vitess.io/vitess/go/sqltypes"
 	"vitess.io/vitess/go/stats"
 	"vitess.io/vitess/go/streamlog"
 	"vitess.io/vitess/go/trace"
 	"vitess.io/vitess/go/vt/callerid"
 	"vitess.io/vitess/go/vt/key"
 	"vitess.io/vitess/go/vt/log"
+	"vitess.io/vitess/go/vt/logutil"
 	binlogdatapb "vitess.io/vitess/go/vt/proto/binlogdata"
 	querypb "vitess.io/vitess/go/vt/proto/query"
 	topodatapb "vitess.io/vitess/go/vt/proto/topodata"
@@ -73,6 +75,8 @@ var (
 
 	queriesProcessedByTable = stats.NewCountersWithMultiLabels("QueriesProcessedByTable", "Queries processed at vtgate by plan type, keyspace and table", []string{"Plan", "Keyspace", "Table"})
 	queriesRoutedByTable    = stats.NewCountersWithMultiLabels("QueriesRoutedByTable", "Queries routed from vtgate to vttablet by plan type, keyspace and table", []string{"Plan", "Keyspace", "Table"})
+
+	exceedMemoryRowsLogger = logutil.NewThrottledLogger("ExceedMemoryRows", 1*time.Minute)
 )
 
 const (
@@ -231,7 +235,12 @@ func (e *Executor) Execute(ctx context.Context, mysqlCtx vtgateservice.MySQLConn
 		if err != nil {
 			piiSafeSQL = logStats.StmtType
 		}
-		log.Warningf("%q exceeds warning threshold of max memory rows: %v. Actual memory rows: %v", piiSafeSQL, warnMemoryRows, len(result.Rows))
+		warningMsg := fmt.Sprintf("%q exceeds warning threshold of max memory rows: %v. Actual memory rows: %v", piiSafeSQL, warnMemoryRows, len(result.Rows))
+		exceedMemoryRowsLogger.Warningf(warningMsg)
+		safeSession.RecordWarning(&querypb.QueryWarning{
+			Code:    uint32(sqlerror.EROutOfMemory),
+			Message: warningMsg,
+		})
 	}
 
 	logStats.SaveEndTime()
@@ -365,7 +374,12 @@ func (e *Executor) StreamExecute(
 		if err != nil {
 			piiSafeSQL = logStats.StmtType
 		}
-		log.Warningf("%q exceeds warning threshold of max memory rows: %v. Actual memory rows: %v", piiSafeSQL, warnMemoryRows, srr.rowsReturned)
+		warningMsg := fmt.Sprintf("%q exceeds warning threshold of max memory rows: %v. Actual memory rows: %v", piiSafeSQL, warnMemoryRows, srr.rowsReturned)
+		exceedMemoryRowsLogger.Warningf(warningMsg)
+		safeSession.RecordWarning(&querypb.QueryWarning{
+			Code:    uint32(sqlerror.EROutOfMemory),
+			Message: warningMsg,
+		})
 	}
 
 	logStats.SaveEndTime()