From eb85d697c745ebaff1f0ebb6997c076b08285c3c Mon Sep 17 00:00:00 2001
From: Eric Anderson <ejona@google.com>
Date: Tue, 19 May 2015 09:45:02 -0700
Subject: [PATCH] Set likely final size of array in toHttp2Headers

We know the size won't be more than serializedHeaders.length, is
unlikely to be fewer, and very unlikely to be substantially fewer. This
prevents us from needing to resize the array in all cases.

Resolves #321
---
 core/src/main/java/io/grpc/transport/TransportFrameUtil.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/java/io/grpc/transport/TransportFrameUtil.java b/core/src/main/java/io/grpc/transport/TransportFrameUtil.java
index 84fcda34af..b100cffee2 100644
--- a/core/src/main/java/io/grpc/transport/TransportFrameUtil.java
+++ b/core/src/main/java/io/grpc/transport/TransportFrameUtil.java
@@ -78,7 +78,7 @@ public final class TransportFrameUtil {
    */
   public static byte[][] toHttp2Headers(Metadata headers) {
     byte[][] serializedHeaders = headers.serialize();
-    ArrayList<byte[]> result = new ArrayList<byte[]>();
+    ArrayList<byte[]> result = new ArrayList<byte[]>(serializedHeaders.length);
     for (int i = 0; i < serializedHeaders.length; i += 2) {
       byte[] key = serializedHeaders[i];
       byte[] value = serializedHeaders[i + 1];