docs: add notes in the customization guide about the feature file size limit

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

docs/usage/customization-guide.md

@@ -315,6 +315,9 @@ The label value defaults to `true`, if not specified.
 
 Label namespace may be specified with `<namespace>/<name>[=<value>]`.
 
+> **NOTE:** The feature file size limit it 64kB. The feature file will be
+> ignored if the size limit is exceeded.
+
 Comment lines (starting with `#`) are ignored.
 
 Adding following line anywhere to feature file defines date when

source/local/local.go

@@ -46,7 +46,7 @@ const ExpiryTimeKey = "expiry-time"
 const DirectivePrefix = "# +"
 
 // MaxFeatureFileSize defines the maximum size of a feature file size
-const MaxFeatureFileSize = 64000
+const MaxFeatureFileSize = 65536
 
 // Config
 var (
@@ -334,8 +334,8 @@ func getFeaturesFromFiles() (map[string]string, error) {
 		fileSize := fileInfo.Size()
 		if fileSize > MaxFeatureFileSize {
 			klog.ErrorS(
-				fmt.Errorf("invalid file size: %d bytes > %d bytes", fileSize, MaxFeatureFileSize),
-				"skipping file with invalid size",
+				fmt.Errorf("file size limit exceeded: %d bytes > %d bytes", fileSize, MaxFeatureFileSize),
+				"skipping too big feature file",
 				"fileName", fileName, "fileSize", fileSize,
 			)
 			continue