Duplication · Netflix/dynomite

Duplication Overall

8% duplication:

21,884 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
1,938 duplicated lines

199 duplicates

dependency graphs: 2D graph | 2D graph (with duplicates)... | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 199 duplicates...

Size	#	Folders	Files	Lines	Code
26	x 2	src/proto src/proto	dyn_memcache.c dyn_memcache.c	676:729 (2%) 1156:1196 (2%)	view
24	x 2	src src	dyn_conf.c dyn_conf.c	718:759 (1%) 897:937 (1%)	view
19	x 2	src src	dyn_dnode_proxy.c dyn_proxy.c	177:203 (13%) 179:205 (14%)	view
19	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	1200:1221 (1%) 2955:2976 (<1%)	view
19	x 2	src/seedsprovider src/seedsprovider	dyn_dns.c dyn_florida.c	40:66 (24%) 63:89 (14%)	view
18	x 2	src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h	184:201 (4%) 324:341 (4%)	view
18	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	2361:2381 (<1%) 2980:2999 (<1%)	view
18	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	729:749 (1%) 2334:2355 (<1%)	view
16	x 2	src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h	169:184 (4%) 373:388 (4%)	view
15	x 2	src src	dyn_dnode_msg.c dyn_dnode_msg.c	449:468 (2%) 559:578 (2%)	view
15	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	1868:1892 (<1%) 2009:2033 (<1%)	view
15	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	1868:1892 (<1%) 2163:2187 (<1%)	view
15	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	1868:1892 (<1%) 2272:2296 (<1%)	view
15	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	2009:2033 (<1%) 2163:2187 (<1%)	view
15	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	2009:2033 (<1%) 2272:2296 (<1%)	view
15	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	2163:2187 (<1%) 2272:2296 (<1%)	view
15	x 2	src/proto src/proto	dyn_memcache.c dyn_memcache.c	549:569 (1%) 1071:1091 (1%)	view
15	x 2	src/hashkit src/hashkit	dyn_token.c dyn_token.c	194:216 (11%) 227:249 (11%)	view
15	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	804:824 (1%) 2441:2461 (<1%)	view
14	x 2	src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h	191:204 (3%) 394:407 (3%)	view
14	x 2	src src	dyn_dnode_proxy.c dyn_proxy.c	54:73 (10%) 69:88 (10%)	view
13	x 2	src src	dyn_gossip.c dyn_gossip.c	687:702 (1%) 721:736 (1%)	view
13	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	1209:1223 (1%) 2345:2359 (<1%)	view
12	x 2	src src	dyn_dnode_msg.c dyn_dnode_msg.c	427:442 (1%) 540:555 (1%)	view
12	x 2	src src	dyn_conf.c dyn_conf.c	661:680 (<1%) 815:834 (<1%)	view
12	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	1794:1807 (<1%) 1946:1959 (<1%)	view
12	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	1794:1807 (<1%) 2109:2122 (<1%)	view
12	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	1794:1807 (<1%) 2218:2231 (<1%)	view
12	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	1946:1959 (<1%) 2109:2122 (<1%)	view
12	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	1946:1959 (<1%) 2218:2231 (<1%)	view
12	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	2109:2122 (<1%) 2218:2231 (<1%)	view
12	x 2	src/proto src/proto	dyn_redis.c dyn_redis.c	2345:2357 (<1%) 2964:2976 (<1%)	view
12	x 2	src src	dyn_client.c dyn_dnode_client.c	150:163 (1%) 107:120 (3%)	view
11	x 2	src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h	225:235 (3%) 388:398 (3%)	view
11	x 2	src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h	331:341 (3%) 394:404 (3%)	view
11	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	750:762 (1%) 2357:2369 (<1%)	view
11	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	1592:1608 (1%) 3849:3865 (<1%)	view
11	x 2	src src	dyn_dnode_peer.c dyn_server.c	357:367 (1%) 146:156 (1%)	view
10	x 2	src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h	215:224 (2%) 363:372 (2%)	view
10	x 2	src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h	239:248 (2%) 401:410 (2%)	view
10	x 2	src src	dyn_dnode_msg.c dyn_dnode_msg.c	707:722 (1%) 762:777 (1%)	view
10	x 2	src/proto src/proto	dyn_memcache.c dyn_memcache.c	621:636 (<1%) 662:676 (<1%)	view
10	x 2	src/proto src/proto	dyn_memcache.c dyn_memcache.c	739:749 (<1%) 1209:1219 (<1%)	view
10	x 2	src src	dyn_dnode_proxy.c dyn_proxy.c	129:149 (7%) 141:161 (7%)	view
10	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	699:727 (<1%) 2936:2951 (<1%)	view
10	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	739:749 (<1%) 2964:2974 (<1%)	view
10	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	765:777 (<1%) 2990:3001 (<1%)	view
10	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	1179:1194 (<1%) 2936:2951 (<1%)	view
10	x 2	src/proto src/proto	dyn_memcache.c dyn_redis.c	1229:1240 (<1%) 2994:3005 (<1%)	view
9	x 2	src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h	155:165 (2%) 434:444 (2%)	view

Most Frequent Duplicates

The list of 50 most frequently found duplicates.

Size	#	Folders	Files	Lines	Code
6	x 6	src src src src src src	dyn_dnode_msg.c dyn_dnode_msg.c dyn_dnode_msg.c dyn_dnode_msg.c dyn_dnode_msg.c dyn_dnode_msg.c	116:124 (<1%) 134:142 (<1%) 152:160 (<1%) 170:178 (<1%) 186:194 (<1%) 206:213 (<1%)	view
6	x 6	src/proto src/proto src/proto src/proto src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h	159:164 (1%) 215:220 (1%) 256:261 (1%) 298:303 (1%) 363:368 (1%) 438:443 (1%)	view
6	x 5	src/proto src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1781:1791 (<1%) 1933:1943 (<1%) 2096:2106 (<1%) 2205:2215 (<1%) 2309:2319 (<1%)	view
6	x 5	src/proto src/proto src/proto src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h	160:165 (1%) 216:221 (1%) 257:262 (1%) 364:369 (1%) 439:444 (1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1876:1884 (<1%) 2017:2025 (<1%) 2171:2179 (<1%) 2280:2288 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1881:1891 (<1%) 2022:2032 (<1%) 2176:2186 (<1%) 2285:2295 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	741:747 (<1%) 2347:2353 (<1%) 1211:1217 (<1%) 2966:2972 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	742:748 (<1%) 2348:2354 (<1%) 1212:1218 (<1%) 2967:2973 (<1%)	view
6	x 4	src src src src	dyn_client.c dyn_dnode_client.c dyn_server.c dyn_dnode_peer.c	158:163 (<1%) 115:120 (1%) 151:156 (<1%) 362:367 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1872:1883 (<1%) 2013:2024 (<1%) 2167:2178 (<1%) 2276:2287 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1796:1802 (<1%) 1948:1954 (<1%) 2111:2117 (<1%) 2220:2226 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	1208:1213 (<1%) 2963:2968 (<1%) 1224:1229 (<1%) 2979:2984 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	743:749 (<1%) 2349:2355 (<1%) 1213:1219 (<1%) 2968:2974 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1795:1801 (<1%) 1947:1953 (<1%) 2110:2116 (<1%) 2219:2225 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1883:1892 (<1%) 2024:2033 (<1%) 2178:2187 (<1%) 2287:2296 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	739:745 (<1%) 2345:2351 (<1%) 1209:1215 (<1%) 2964:2970 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1871:1881 (<1%) 2012:2022 (<1%) 2166:2176 (<1%) 2275:2285 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1868:1876 (<1%) 2009:2017 (<1%) 2163:2171 (<1%) 2272:2280 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	699:707 (<1%) 2315:2323 (<1%) 1179:1187 (<1%) 2936:2944 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	730:737 (<1%) 2335:2343 (<1%) 1200:1207 (<1%) 2955:2962 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1799:1804 (<1%) 1951:1956 (<1%) 2114:2119 (<1%) 2223:2228 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1879:1887 (<1%) 2020:2028 (<1%) 2174:2182 (<1%) 2283:2291 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	740:746 (<1%) 2346:2352 (<1%) 1210:1216 (<1%) 2965:2971 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1880:1888 (<1%) 2021:2029 (<1%) 2175:2183 (<1%) 2284:2292 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1801:1807 (<1%) 1953:1959 (<1%) 2116:2122 (<1%) 2225:2231 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1869:1879 (<1%) 2010:2020 (<1%) 2164:2174 (<1%) 2273:2283 (<1%)	view
6	x 4	src/event src/event src/event src/event	dyn_epoll.c dyn_epoll.c dyn_epoll.c dyn_epoll.c	93:99 (2%) 121:127 (2%) 149:155 (2%) 177:183 (2%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	737:742 (<1%) 2343:2348 (<1%) 752:757 (<1%) 2359:2364 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	1207:1212 (<1%) 2962:2967 (<1%) 1223:1228 (<1%) 2978:2983 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1800:1806 (<1%) 1952:1958 (<1%) 2115:2121 (<1%) 2224:2230 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	700:708 (<1%) 2316:2324 (<1%) 1180:1188 (<1%) 2937:2945 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1794:1800 (<1%) 1946:1952 (<1%) 2109:2115 (<1%) 2218:2224 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	738:743 (<1%) 2344:2349 (<1%) 753:758 (<1%) 2360:2365 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1798:1803 (<1%) 1950:1955 (<1%) 2113:2118 (<1%) 2222:2227 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_redis.c dyn_redis.c dyn_redis.c dyn_redis.c	1870:1880 (<1%) 2011:2021 (<1%) 2165:2175 (<1%) 2274:2284 (<1%)	view
6	x 4	src/proto src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c dyn_redis.c	694:703 (<1%) 2692:2701 (<1%) 1174:1183 (<1%) 2761:2769 (<1%)	view
6	x 3	src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_redis.c	755:761 (<1%) 2362:2368 (<1%) 2981:2987 (<1%)	view
6	x 3	src/seedsprovider src/seedsprovider src/hashkit	dyn_dns.c dyn_florida.c dyn_one_at_a_time.c	58:64 (7%) 81:87 (4%) 47:53 (40%)	view
6	x 3	src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_redis.c	766:773 (<1%) 2372:2379 (<1%) 2991:2997 (<1%)	view
6	x 3	src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_redis.c	754:760 (<1%) 2361:2367 (<1%) 2980:2986 (<1%)	view
6	x 3	src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c	167:175 (<1%) 2449:2457 (<1%) 812:820 (<1%)	view
6	x 3	src src src	dyn_gossip.c dyn_server.c dyn_gossip.c	89:94 (<1%) 504:509 (<1%) 98:103 (<1%)	view
6	x 3	src/proto src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h	195:200 (1%) 335:340 (1%) 398:403 (1%)	view
6	x 3	src/proto src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h	193:198 (1%) 333:338 (1%) 396:401 (1%)	view
6	x 3	src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_redis.c	729:734 (<1%) 2334:2340 (<1%) 2954:2959 (<1%)	view
6	x 3	src/proto src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h	192:197 (1%) 332:337 (1%) 395:400 (1%)	view
6	x 3	src/proto src/proto src/proto	dyn_proto_repair.h dyn_proto_repair.h dyn_proto_repair.h	169:174 (1%) 309:314 (1%) 373:378 (1%)	view
6	x 3	conf conf conf	redis_rack2_node.yml redis_rack3_node.yml redis_rack1_node.yml	11:16 (35%) 11:16 (35%) 11:16 (35%)	view
6	x 3	src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c	172:179 (<1%) 2454:2461 (<1%) 817:824 (<1%)	view
6	x 3	src/proto src/proto src/proto	dyn_memcache.c dyn_redis.c dyn_memcache.c	691:699 (<1%) 2689:2697 (<1%) 1171:1179 (<1%)	view

Duplicated Units

The list of top 1 duplicated units.

See data for all 1 unit duplicate

Size	#	Folders	Files	Lines	Code
12	x 2	src/seedsprovider src/seedsprovider	dyn_florida.c dyn_dns.c	75:90 52:67	view

About This Analysis

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:

Avoid Repetition, MartinFlower.com (IEEE Software article)
Refactoring duplicated code, sourcemaking.com
Beck Design Rules, MartinFowler.com
DRY (Don't Repeat Yourself) Principle, Wikipedia
The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:

"Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"

Reducing Coupling, MartinFlower.com (IEEE Software article):

"There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."