diff --git a/vendor/github.com/Shopify/sarama/record.go b/vendor/github.com/Shopify/sarama/record.go
index cded308..cdccfe3 100644
--- a/vendor/github.com/Shopify/sarama/record.go
+++ b/vendor/github.com/Shopify/sarama/record.go
@@ -6,10 +6,12 @@
 )
 
 const (
+	isTransactionalMask   = 0x10
 	controlMask           = 0x20
 	maximumRecordOverhead = 5*binary.MaxVarintLen32 + binary.MaxVarintLen64 + 1
 )
 
+//RecordHeader stores key and value for a record header
 type RecordHeader struct {
 	Key   []byte
 	Value []byte
@@ -33,15 +35,16 @@
 	return nil
 }
 
+//Record is kafka record type
 type Record struct {
+	Headers []*RecordHeader
+
 	Attributes     int8
 	TimestampDelta time.Duration
 	OffsetDelta    int64
 	Key            []byte
 	Value          []byte
-	Headers        []*RecordHeader
-
-	length varintLengthField
+	length         varintLengthField
 }
 
 func (r *Record) encode(pe packetEncoder) error {