Dan, include these jars register 'jackson-core-2.0.6.jar' register 'jackson-databind-2.0.6.jar' register 'jackson-annotations-2.0.6.jar'
-- Harsha On Wednesday, July 24, 2013 at 2:25 PM, Serega Sheypak wrote: > There is a missing dependency, a jar with class > com.fasterxml.jackson.databind.ObjectMapper > Use Google to find jar. Suggest you to use maven public repos. > 24.07.2013 23:16 пользователь "Dan Zhu" <dan...@yahoo-inc.com > (mailto:dan...@yahoo-inc.com)> написал: > > > Hi pig-users, > > > > I have tuples of nested JSON string, I am trying to parse it in Pig. > > > > I tried com.twitter.elephantbird.pig.piggybank.JsonStringToMap() > > (acctDataJsonized = FOREACH acctData GENERATE > > com.mozilla.pig.eval.json.JsonMap($0) AS json_map:map[];) but it only > > parsed the first level rather than nested. > > > > I also tried com.mozilla.pig.eval.json.JsonMap() (acctDataJsonized = > > FOREACH acctData GENERATE > > com.twitter.elephantbird.pig.piggybank.JsonStringToMap($0);) but it throws: > > (is it due to NULL value in the JSON data?) > > > > ERROR 1200: Pig script failed to parse: > > <line 7, column 45> Failed to generate logical plan. Nested exception: > > java.lang.RuntimeException: could not instantiate > > 'com.mozilla.pig.eval.json.JsonMap' with arguments 'null' > > > > Failed to parse: Pig script failed to parse: > > <line 7, column 45> Failed to generate logical plan. Nested exception: > > java.lang.RuntimeException: could not instantiate > > 'com.mozilla.pig.eval.json.JsonMap' with arguments 'null' > > at > > org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:184) > > at org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1570) > > at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1543) > > at org.apache.pig.PigServer.registerQuery(PigServer.java:545) > > at org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:970) > > at > > org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:386) > > at > > org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:189) > > at > > org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:165) > > at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69) > > at org.apache.pig.Main.run(Main.java:495) > > at org.apache.pig.Main.main(Main.java:111) > > Caused by: > > <line 7, column 45> Failed to generate logical plan. Nested exception: > > java.lang.RuntimeException: could not instantiate > > 'com.mozilla.pig.eval.json.JsonMap' with arguments 'null' > > at > > org.apache.pig.parser.LogicalPlanBuilder.buildUDF(LogicalPlanBuilder.java:980) > > at > > org.apache.pig.parser.LogicalPlanGenerator.func_eval(LogicalPlanGenerator.java:7316) > > at > > org.apache.pig.parser.LogicalPlanGenerator.projectable_expr(LogicalPlanGenerator.java:8857) > > at > > org.apache.pig.parser.LogicalPlanGenerator.var_expr(LogicalPlanGenerator.java:8632) > > at > > org.apache.pig.parser.LogicalPlanGenerator.expr(LogicalPlanGenerator.java:7984) > > at > > org.apache.pig.parser.LogicalPlanGenerator.flatten_generated_item(LogicalPlanGenerator.java:5962) > > at > > org.apache.pig.parser.LogicalPlanGenerator.generate_clause(LogicalPlanGenerator.java:14101) > > at > > org.apache.pig.parser.LogicalPlanGenerator.foreach_plan(LogicalPlanGenerator.java:12493) > > at > > org.apache.pig.parser.LogicalPlanGenerator.foreach_clause(LogicalPlanGenerator.java:12360) > > at > > org.apache.pig.parser.LogicalPlanGenerator.op_clause(LogicalPlanGenerator.java:1577) > > at > > org.apache.pig.parser.LogicalPlanGenerator.general_statement(LogicalPlanGenerator.java:789) > > at > > org.apache.pig.parser.LogicalPlanGenerator.statement(LogicalPlanGenerator.java:507) > > at > > org.apache.pig.parser.LogicalPlanGenerator.query(LogicalPlanGenerator.java:382) > > at > > org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:177) > > ... 10 more > > Caused by: java.lang.RuntimeException: could not instantiate > > 'com.mozilla.pig.eval.json.JsonMap' with arguments 'null' > > at > > org.apache.pig.impl.PigContext.instantiateFuncFromSpec(PigContext.java:554) > > at > > org.apache.pig.impl.PigContext.instantiateFuncFromSpec(PigContext.java:560) > > at > > org.apache.pig.impl.PigContext.instantiateFuncFromAlias(PigContext.java:583) > > at > > org.apache.pig.parser.LogicalPlanBuilder.buildUDF(LogicalPlanBuilder.java:977) > > ... 23 more > > Caused by: java.lang.NoClassDefFoundError: Could not initialize class > > com.fasterxml.jackson.databind.ObjectMapper > > at com.mozilla.pig.eval.json.JsonMap.<init>(JsonMap.java:47) > > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) > > at > > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) > > at > > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > > at java.lang.reflect.Constructor.newInstance(Constructor.java:525) > > at java.lang.Class.newInstance0(Class.java:374) > > at java.lang.Class.newInstance(Class.java:327) > > at > > org.apache.pig.impl.PigContext.instantiateFuncFromSpec(PigContext.java:524) > > ... 26 more > > > > Any suggestion will be very appreciated. > > > > Thanks & Regards, > > > > Dan