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From "Don Drake (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-15467) Getting stack overflow when attempting to query a wide Dataset (>200 fields)
Date Sat, 21 May 2016 22:12:12 GMT
Don Drake created SPARK-15467:
---------------------------------

             Summary: Getting stack overflow when attempting to query a wide Dataset (>200
fields)
                 Key: SPARK-15467
                 URL: https://issues.apache.org/jira/browse/SPARK-15467
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.0.0
            Reporter: Don Drake


This can be duplicated in a spark-shell, I am running Spark 2.0.0-preview.

{code}
import spark.implicits._


case class Wide(
val f0:String = "",
val f1:String = "",
val f2:String = "",
val f3:String = "",
val f4:String = "",
val f5:String = "",
val f6:String = "",
val f7:String = "",
val f8:String = "",
val f9:String = "",
val f10:String = "",
val f11:String = "",
val f12:String = "",
val f13:String = "",
val f14:String = "",
val f15:String = "",
val f16:String = "",
val f17:String = "",
val f18:String = "",
val f19:String = "",
val f20:String = "",
val f21:String = "",
val f22:String = "",
val f23:String = "",
val f24:String = "",
val f25:String = "",
val f26:String = "",
val f27:String = "",
val f28:String = "",
val f29:String = "",
val f30:String = "",
val f31:String = "",
val f32:String = "",
val f33:String = "",
val f34:String = "",
val f35:String = "",
val f36:String = "",
val f37:String = "",
val f38:String = "",
val f39:String = "",
val f40:String = "",
val f41:String = "",
val f42:String = "",
val f43:String = "",
val f44:String = "",
val f45:String = "",
val f46:String = "",
val f47:String = "",
val f48:String = "",
val f49:String = "",
val f50:String = "",
val f51:String = "",
val f52:String = "",
val f53:String = "",
val f54:String = "",
val f55:String = "",
val f56:String = "",
val f57:String = "",
val f58:String = "",
val f59:String = "",
val f60:String = "",
val f61:String = "",
val f62:String = "",
val f63:String = "",
val f64:String = "",
val f65:String = "",
val f66:String = "",
val f67:String = "",
val f68:String = "",
val f69:String = "",
val f70:String = "",
val f71:String = "",
val f72:String = "",
val f73:String = "",
val f74:String = "",
val f75:String = "",
val f76:String = "",
val f77:String = "",
val f78:String = "",
val f79:String = "",
val f80:String = "",
val f81:String = "",
val f82:String = "",
val f83:String = "",
val f84:String = "",
val f85:String = "",
val f86:String = "",
val f87:String = "",
val f88:String = "",
val f89:String = "",
val f90:String = "",
val f91:String = "",
val f92:String = "",
val f93:String = "",
val f94:String = "",
val f95:String = "",
val f96:String = "",
val f97:String = "",
val f98:String = "",
val f99:String = "",
val f100:String = "",
val f101:String = "",
val f102:String = "",
val f103:String = "",
val f104:String = "",
val f105:String = "",
val f106:String = "",
val f107:String = "",
val f108:String = "",
val f109:String = "",
val f110:String = "",
val f111:String = "",
val f112:String = "",
val f113:String = "",
val f114:String = "",
val f115:String = "",
val f116:String = "",
val f117:String = "",
val f118:String = "",
val f119:String = "",
val f120:String = "",
val f121:String = "",
val f122:String = "",
val f123:String = "",
val f124:String = "",
val f125:String = "",
val f126:String = "",
val f127:String = "",
val f128:String = "",
val f129:String = "",
val f130:String = "",
val f131:String = "",
val f132:String = "",
val f133:String = "",
val f134:String = "",
val f135:String = "",
val f136:String = "",
val f137:String = "",
val f138:String = "",
val f139:String = "",
val f140:String = "",
val f141:String = "",
val f142:String = "",
val f143:String = "",
val f144:String = "",
val f145:String = "",
val f146:String = "",
val f147:String = "",
val f148:String = "",
val f149:String = "",
val f150:String = "",
val f151:String = "",
val f152:String = "",
val f153:String = "",
val f154:String = "",
val f155:String = "",
val f156:String = "",
val f157:String = "",
val f158:String = "",
val f159:String = "",
val f160:String = "",
val f161:String = "",
val f162:String = "",
val f163:String = "",
val f164:String = "",
val f165:String = "",
val f166:String = "",
val f167:String = "",
val f168:String = "",
val f169:String = "",
val f170:String = "",
val f171:String = "",
val f172:String = "",
val f173:String = "",
val f174:String = "",
val f175:String = "",
val f176:String = "",
val f177:String = "",
val f178:String = "",
val f179:String = "",
val f180:String = "",
val f181:String = "",
val f182:String = "",
val f183:String = "",
val f184:String = "",
val f185:String = "",
val f186:String = "",
val f187:String = "",
val f188:String = "",
val f189:String = "",
val f190:String = "",
val f191:String = "",
val f192:String = "",
val f193:String = "",
val f194:String = "",
val f195:String = "",
val f196:String = "",
val f197:String = "",
val f198:String = "",
val f199:String = "",
val f200:String = "",
val f201:String = "",
val f202:String = "",
val f203:String = "",
val f204:String = "",
val f205:String = "",
val f206:String = "",
val f207:String = "",
val f208:String = "",
val f209:String = "",
val f210:String = "",
val f211:String = "",
val f212:String = "",
val f213:String = "",
val f214:String = "",
val f215:String = "",
val f216:String = "",
val f217:String = "",
val f218:String = "",
val f219:String = "",
val f220:String = "",
val f221:String = "",
val f222:String = "",
val f223:String = "",
val f224:String = "",
val f225:String = "",
val f226:String = "",
val f227:String = "",
val f228:String = "",
val f229:String = "",
val f230:String = "",
val f231:String = "",
val f232:String = "",
val f233:String = "",
val f234:String = "",
val f235:String = "",
val f236:String = "",
val f237:String = "",
val f238:String = "",
val f239:String = "",
val f240:String = "",
val f241:String = "",
val f242:String = "",
val f243:String = "",
val f244:String = "",
val f245:String = "",
val f246:String = "",
val f247:String = "",
val f248:String = "",
val f249:String = "",
val f250:String = "",
val f251:String = "",
val f252:String = "")

val ds = Seq(Wide(), Wide()).toDS

ds.groupByKey(x => x.f0).mapGroups( (k, vals) => { k } ).show
{code}



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