remove KetamaHash()

src/brpc/policy/hasher.cpp

@@ -39,10 +39,6 @@ uint32_t MD5Hash32(const void* key, size_t len) {
             | (results[0] & 0xFF);
 }
 
-uint32_t KetamaHash(const void* key, size_t len) {
-    return MD5Hash32(key, len);
-}
-
 uint32_t MD5Hash32V(const butil::StringPiece* keys, size_t num_keys) {
     MD5_CTX ctx;
     MD5_Init(&ctx);
@@ -165,9 +161,6 @@ const char *GetHashName(HashFunc hasher) {
     if (hasher == CRCHash32) {
         return "crc32";
     }
-    if (hasher == KetamaHash) {
-        return "ketama";
-    }
 
     return "user_defined";
 }

src/brpc/policy/hasher.h

@@ -34,8 +34,6 @@ uint32_t MD5Hash32V(const butil::StringPiece* keys, size_t num_keys);
 uint32_t MurmurHash32(const void* key, size_t len);
 uint32_t MurmurHash32V(const butil::StringPiece* keys, size_t num_keys);
 
-uint32_t KetamaHash(const void* key, size_t len);
-
 }  // namespace policy
 } // namespace brpc
 

test/brpc_load_balancer_unittest.cpp

@@ -488,7 +488,7 @@ TEST_F(LoadBalancerTest, consistent_hashing) {
     ::brpc::policy::HashFunc hashs[::brpc::policy::CONS_HASH_LB_LAST] = {
             ::brpc::policy::MurmurHash32, 
             ::brpc::policy::MD5Hash32,
-            ::brpc::policy::KetamaHash
+            ::brpc::policy::MD5Hash32
             // ::brpc::policy::CRCHash32 crc is a bad hash function in test
     };