A query with a lot of ORs fails

[s-yata]

Description

A select with a lot of ORs in its --query fails as follows:

> select article --match_columns body --query \
  '0 OR 1 OR 2 OR 3 OR 4 OR 5 OR 6 OR 7 OR 8 OR 9 OR \
   10 OR 11 OR 12 OR 13 OR 14 OR 15 OR 16 OR 17 OR 18 OR 19 OR \
   20 OR 21 OR 22 OR 23 OR 24 OR 25 OR 26 OR 27 OR 28 OR 29 OR \
   30 OR 31 OR 32 OR 33 OR 34 OR 35 OR 36 OR 37 OR 38 OR 39 OR \
   40 OR 41 OR 42 OR 43 OR 44 OR 45 OR 46 OR 47 OR 48 OR 49 OR \
   50 OR 51 OR 52 OR 53 OR 54 OR 55 OR 56 OR 57 OR 58 OR 59 OR \
   60 OR 61 OR 62 OR 63 OR 64 OR 65 OR 66 OR 67 OR 68 OR 69 OR \
   70 OR 71 OR 72 OR 73 OR 74 OR 75 OR 76 OR 77 OR 78 OR 79 OR \
   80 OR 81 OR 82 OR 83 OR 84 OR 85 OR 86 OR 87 OR 88 OR 89 OR \
   90 OR 91 OR 92 OR 93 OR 94 OR 95 OR 96 OR 97 OR 98 OR 99 OR \
   100 OR 101 OR 102 OR 103 OR 104 OR 105 OR 106 OR 107 OR 108 OR 109 OR \
   110 OR 111 OR 112 OR 113 OR 114 OR 115 OR 116 OR 117 OR 118 OR 119 OR \
   120 OR 121 OR 122 OR 123 OR 124 OR 125 OR 126 OR 127 OR 128 OR 129 OR \
   130 OR 131 OR 132 OR 133 OR 134 OR 135 OR 136 OR 137 OR 138 OR 139 OR \
   140 OR 141 OR 142 OR 143 OR 144 OR 145 OR 146 OR 147 OR 148 OR 149 OR \
   150 OR 151 OR 152 OR 153 OR 154 OR 155 OR 156 OR 157 OR 158 OR 159 OR \
   160 OR 161 OR 162 OR 163 OR 164 OR 165 OR 166 OR 167 OR 168 OR 169 OR \
   170 OR 171 OR 172 OR 173 OR 174 OR 175 OR 176 OR 177 OR 178 OR 179 OR \
   180 OR 181 OR 182 OR 183 OR 184 OR 185 OR 186 OR 187 OR 188 OR 189 OR \
   190 OR 191 OR 192 OR 193 OR 194 OR 195 OR 196 OR 197 OR 198 OR 199 OR \
   200 OR 201 OR 202 OR 203 OR 204 OR 205 OR 206 OR 207 OR 208 OR 209 OR \
   210 OR 211 OR 212 OR 213 OR 214 OR 215 OR 216 OR 217 OR 218 OR 219 OR \
   220 OR 221 OR 222 OR 223 OR 224 OR 225 OR 226 OR 227 OR 228 OR 229 OR \
   230 OR 231 OR 232 OR 233 OR 234 OR 235 OR 236 OR 237 OR 238 OR 239 OR \
   240 OR 241 OR 242 OR 243 OR 244 OR 245 OR 246 OR 247 OR 248 OR 249 OR \
   250 OR 251 OR 252 OR 253 OR 254 OR 255 OR 256'
[[-35,1449563985.26278,0.000534296035766602,"stack is full",
 [["grn_expr_append_obj","expr.c",741],[...]]],[]]

commands.txt

The above --query is the shortest case.
If there are 255 ORs in --query, the select does not fail.

Reported by Hiroyuki Sato. Thanks!!!

• groonga検索時にrc=-35のエラーが発生する (groonga-dev,03718) - Groonga - fulltext search engine. (グルンガ) - OSDN
  • https://osdn.jp/projects/groonga/lists/archive/dev/2015-December/003721.html

[s-yata]

In this case, the error message "stack is full" means that grn_expr.codes is exhausted.
When I set GRN_STACK_SIZE * 2 to grn_expr.codes_size, the select with 256 ORs succeeded.
I'll check whether or not grn_expr.codes is resizable.

[s-yata]

I've confirmed that the latest version can execute a select with 1000 ORs in --query.

ORx1000.txt