diff --git a/docs/configuration.md b/docs/configuration.md
index 3c073b83a..1432cbea1 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -401,7 +401,7 @@ A three node cluster running on different hosts could be minimally configured as
     
     [gossip]
       port = 12000
-      seed = "node0.pilosa.com:12000"
+      seeds = ["node0.pilosa.com:12000"]
 
     [cluster]
       replicas = 1
@@ -414,7 +414,7 @@ A three node cluster running on different hosts could be minimally configured as
     
     [gossip]
       port = 12000
-      seed = "node0.pilosa.com:12000"
+      seeds = ["node0.pilosa.com:12000"]
 
     [cluster]
       replicas = 1
@@ -427,7 +427,7 @@ A three node cluster running on different hosts could be minimally configured as
     
     [gossip]
       port = 12000
-      seed = "node0.pilosa.com:12000"
+      seeds = ["node0.pilosa.com:12000"]
 
     [cluster]
       replicas = 1
@@ -445,7 +445,7 @@ The same cluster which uses HTTPS instead of HTTP can be configured as follows.
 
     [gossip]
       port = 12000
-      seed = "node0.pilosa.com:12000"
+      seeds = ["node0.pilosa.com:12000"]
       key = "/home/pilosa/private/gossip.key32"
 
     [cluster]
@@ -463,7 +463,7 @@ The same cluster which uses HTTPS instead of HTTP can be configured as follows.
 
     [gossip]
       port = 12000
-      seed = "node0.pilosa.com:12000"
+      seeds = ["node0.pilosa.com:12000"]
       key = "/home/pilosa/private/gossip.key32"
 
     [cluster]
@@ -481,7 +481,7 @@ The same cluster which uses HTTPS instead of HTTP can be configured as follows.
 
     [gossip]
       port = 12000
-      seed = "node0.pilosa.com:12000"
+      seeds = ["node0.pilosa.com:12000"]
       key = "/home/pilosa/private/gossip.key32"
 
     [cluster]
@@ -503,7 +503,7 @@ You can run a cluster on the same host using the configuration above with a few
 
     [gossip]
       port = 12000
-      seed = "localhost:12000"
+      seeds = ["localhost:12000"]
       key = "/home/pilosa/private/gossip.key32"
 
     [cluster]
@@ -521,7 +521,7 @@ You can run a cluster on the same host using the configuration above with a few
 
     [gossip]
       port = 12001
-      seed = "localhost:12000"
+      seeds = ["localhost:12000"]
       key = "/home/pilosa/private/gossip.key32"
 
     [cluster]
@@ -539,7 +539,7 @@ You can run a cluster on the same host using the configuration above with a few
 
     [gossip]
       port = 12002
-      seed = "localhost:12000"
+      seeds = ["localhost:12000"]
       key = "/home/pilosa/private/gossip.key32"
 
     [cluster]
diff --git a/roaring/roaring.go b/roaring/roaring.go
index 9c45c044b..2fe76e8ef 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -232,6 +232,18 @@ func (b *Bitmap) Count() (n uint64) {
 	return b.Containers.Count()
 }
 
+// Size returns the number of bytes required for the bitmap.
+func (b *Bitmap) Size() int {
+	numbytes := 0
+	citer, _ := b.Containers.Iterator(0)
+	for citer.Next() {
+		_, c := citer.Value()
+		numbytes += c.size()
+
+	}
+	return numbytes
+}
+
 // CountRange returns the number of bits set between [start, end).
 func (b *Bitmap) CountRange(start, end uint64) (n uint64) {
 	if b.Containers.Size() == 0 {
diff --git a/roaring/roaring_test.go b/roaring/roaring_test.go
index 5da9fc38c..b165042a9 100644
--- a/roaring/roaring_test.go
+++ b/roaring/roaring_test.go
@@ -37,6 +37,29 @@ func TestContainerCount(t *testing.T) {
 		t.Fatalf("Count != CountRange\n")
 	}
 }
+func TestSize(t *testing.T) {
+	//array
+	a := roaring.NewFileBitmap(0, 65535, 131072)
+	if a.Size() != 6 {
+		t.Fatalf("Size in bytes incorrect \n")
+	}
+
+	//bitmap
+	b := roaring.NewFileBitmap()
+	for i := uint64(0); i <= 4096; i++ {
+		b.DirectAdd(i)
+	}
+
+	if b.Size() != 8192 {
+		t.Fatalf("Size in bytes incorrect \n")
+	}
+	//convert to rle
+	b.Optimize()
+	//rle
+	if b.Size() != 6 {
+		t.Fatalf("Size in bytes incorrect \n")
+	}
+}
 
 func TestCountRange(t *testing.T) {
 	tests := []struct {