fix: Fixed issue with context cancelled error leading to connection spikes on Master

Author: Bhargav Dodla

.github/workflows/build.yml

@@ -2,9 +2,9 @@ name: Go
 
 on:
   push:
-    branches: [master, v9, v9.7]
+    branches: [master, v9]
   pull_request:
-    branches: [master, v9, v9.7]
+    branches: [master, v9]
 
 permissions:
   contents: read

error.go

@@ -38,6 +38,15 @@ type Error interface {
 
 var _ Error = proto.RedisError("")
 
+func isContextError(err error) bool {
+	switch err {
+	case context.Canceled, context.DeadlineExceeded:
+		return true
+	default:
+		return false
+	}
+}
+
 func shouldRetry(err error, retryTimeout bool) bool {
 	switch err {
 	case io.EOF, io.ErrUnexpectedEOF:

osscluster.go

@@ -1321,7 +1321,9 @@ func (c *ClusterClient) processPipelineNode(
 	_ = node.Client.withProcessPipelineHook(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
 		cn, err := node.Client.getConn(ctx)
 		if err != nil {
-			node.MarkAsFailing()
+			if !isContextError(err) {
+				node.MarkAsFailing()
+			}
 			_ = c.mapCmdsByNode(ctx, failedCmds, cmds)
 			setCmdsErr(cmds, err)
 			return err