Hi solr community:
I have been thinking to use composite key for my next project iteration and tried it today to see how it distributes the documents. Here is a gist of my code: https://gist.github.com/niqbal/3e293e2bcb800d6912a250d914c9d478 I have 117 shards and i tried to use document ids from zero to 116. I find that the distribution is very uneven, e.g., the largest bucket receives total 5 documents; and around 38 shards will be empty. Is it expected? In the following result: value1 is the shard number, value 2 is a list of documents which it received. List(98:List(29) , 34:List(36) , 8:List(54) , 73:List(31) , 19:List(77) , 23:List(59) , 62:List(86) , 77:List(105) , 11:List(11) , 104:List(23) , 44:List(4) , 37:List(0) , 61:List(71) , 107:List(37) , 46:List(34) , 99:List(19) , 24:List(32) , 94:List(90) , 103:List(106) , 72:List(97) , 59:List(2) , 76:List(6) , 54:List(20) , 65:List(3) , 71:List(26) , 108:List(17) , 106:List(57) , 17:List(108) , 25:List(13) , 60:List(56) , 102:List(87) , 69:List(60) , 64:List(53) , 53:List(85) , 42:List(35) , 115:List(82) , 0:List(28) , 20:List(27) , 81:List(39) , 101:List(92) , 30:List(16) , 41:List(63) , 3:List(10) , 91:List(21) , 85:List(18) , 28:List(8) , 113:List(76, 95) , 51:List(47, 102) , 78:List(30, 67) , 4:List(52, 84) , 110:List(112, 116) , 9:List(1, 40) , 50:List(22, 101) , 13:List(72, 83) , 35:List(73, 100) , 16:List(48, 64) , 112:List(69, 103) , 10:List(14, 66) , 87:List(68, 104) , 57:List(49, 114) , 36:List(79, 99) , 1:List(24, 70) , 96:List(5, 98) , 95:List(45, 89) , 75:List(9, 91) , 70:List(62, 78) , 2:List(74, 75) , 114:List(81, 88) , 74:List(7, 115) , 52:List(46, 111) , 55:List(12, 50, 113) , 47:List(43, 44, 96) , 92:List(25, 33, 58) , 39:List(15, 41, 61, 107) , 21:List(38, 51, 55, 93, 110) , 27:List(42, 65, 80, 94, 109) )
