入力に日時データがあり、Pig から正しくロードしたいと考えています。私はググって、chararrayとしてロードしてからToDate関数でdatetimeに変換することが提案されていることを知りました。ただし、同じスクリプトは 1 つの入力に対して機能しますが、同じデータ形式を持つ別の入力に対しては機能しません。私の豚のバージョンは0.12.1です。私が使用しているスクリプト：
A = load '/user/ss/debug/debug' using PigStorage(',') as (AUDIT:chararray,JOB:chararray,TYPE:chararray,ID:long,STATUS_ID:long,POOL_NAME:chararray,SLA_PRIORITY:long,STATUS:chararray,RUN_ID:long,TASK:chararray,SCENARIO_ID:long,CREDIT_CNT:long,COMM_CNT:long,BONUS_CNT:long,PAYMENT_CNT:long,RUN_TIME:long,START_TIME:chararray,END_TIME:chararray,ITEM_COUNT:long);
B = foreach A generate JOB, TYPE, ID, CREDIT_CNT, COMM_CNT, BONUS_CNT, PAYMENT_CNT, ToDate(START_TIME, 'yyyy-MM-dd HH:mm:ss') as (START_TIME_DT:datetime), ToDate(END_TIME, 'yyyy-MM-dd HH:mm:ss') as (END_TIME_DT:datetime), START_TIME, END_TIME, ITEM_COUNT;
dump B;
データは次のようになります。
エラーを報告する入力:
D789FD70FE9E3ABBE0432165880A09E1,D789FD70FE9D3ABBE0432165880A09E1,VA,123,4946586,DEFAULT,1,Completed,,DD13,,0,0,0,0,0,2013-03-10 02:41:14,2013-03-10 02:41:16,0
正しく実行される入力:
C888E618A7740A71E0432165880ABCA3,C888E618A7730A71E0432165880ABCA3,VA,123,4680120,DEFAULT,1,Completed,,DD12,,0,0,0,0,0,2012-08-31 04:16:56,2012-08-31 04:17:02,0
C888FC5DA4B212F3E0432165880A3C34,C888FC5DA4B112F3E0432165880A3C34,VA,123,4680125,DEFAULT,1,Completed,,DD12,,0,0,0,0,0,2012-08-31 04:17:51,2012-08-31 04:17:57,0
C888FC5DA4B912F3E0432165880A3C34,C888FC5DA4B812F3E0432165880A3C34,VA,123,4680127,DEFAULT,1,Completed,,DD14,,0,0,0,0,0,2012-08-31 04:18:17,2012-08-31 04:18:22,0
同一の入力スキーマとスクリプトが異なる結果になる理由がわかりません。エラーには、「"2013-03-10 02:41:14" を解析できません: タイム ゾーン オフセットの移行 (アメリカ/ロサンゼルス) による不正なインスタント」というメッセージが表示されます。
エラー ログは次のようになります。
Backend error message
---------------------
org.apache.pig.backend.executionengine.ExecException: ERROR 0: Exception while executing [POUserFunc (Name: POUserFunc(org.apache.pig.builtin.ToDate2ARGS)[datetime] - scope-120 Operator Key: scope-120) children: null at []]: java.lang.IllegalArgumentException: Cannot parse "2013-03-10 02:41:14": Illegal instant due to time zone offset transition (America/Los_Angeles)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:338)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:378)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNextTuple(POForEach.java:298)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:282)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:277)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:707)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:352)
at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127)
at org.apache.hadoop.mapred.Child.main(Child.java:264)
Caused by: java.lang.IllegalArgumentException: Cannot parse "2013-03-10 02:41:14": Illegal instant due to time zone offset transition (America/Los_Angeles)
at org.joda.time.format.DateTimeParserBucket.computeMillis(DateTimeParserBucket.java:336)
at org.joda.time.format.DateTimeFormatter.parseDateTime(DateTimeFormatter.java:672)
at org.apache.pig.builtin.ToDate2ARGS.exec(ToDate2ARGS.java:45)
at org.apache.pig.builtin.ToDate2ARGS.exec(ToDate2ARGS.java:33)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:330)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNextDateTime(POUserFunc.java:422)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:329)
... 13 more
Pig Stack Trace
---------------
ERROR 1066: Unable to open iterator for alias C. Backend error : Exception while executing [POUserFunc (Name: POUserFunc(org.apache.pig.builtin.ToDate2ARGS)[datetime] - scope-120 Operator Key: scope-120) children: null at []]: java.lang.IllegalArgumentException: Cannot parse "2013-03-10 02:41:14": Illegal instant due to time zone offset transition (America/Los_Angeles)
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator for alias C. Backend error : Exception while executing [POUserFunc (Name: POUserFunc(org.apache.pig.builtin.ToDate2ARGS)[datetime] - scope-120 Operator Key: scope-120) children: null at []]: java.lang.IllegalArgumentException: Cannot parse "2013-03-10 02:41:14": Illegal instant due to time zone offset transition (America/Los_Angeles)
at org.apache.pig.PigServer.openIterator(PigServer.java:870)
at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:774)
at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:372)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:198)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:173)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69)
at org.apache.pig.Main.run(Main.java:541)
at org.apache.pig.Main.main(Main.java:156)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.main(RunJar.java:197)
Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 0: Exception while executing [POUserFunc (Name: POUserFunc(org.apache.pig.builtin.ToDate2ARGS)[datetime] - scope-120 Operator Key: scope-120) children: null at []]: java.lang.IllegalArgumentException: Cannot parse "2013-03-10 02:41:14": Illegal instant due to time zone offset transition (America/Los_Angeles)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:338)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:378)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNextTuple(POForEach.java:298)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:282)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:277)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:707)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:352)
at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127)
at org.apache.hadoop.mapred.Child.main(Child.java:264)
Caused by: java.lang.IllegalArgumentException: Cannot parse "2013-03-10 02:41:14": Illegal instant due to time zone offset transition (America/Los_Angeles)
at org.joda.time.format.DateTimeParserBucket.computeMillis(DateTimeParserBucket.java:336)
at org.joda.time.format.DateTimeFormatter.parseDateTime(DateTimeFormatter.java:672)
at org.apache.pig.builtin.ToDate2ARGS.exec(ToDate2ARGS.java:45)
at org.apache.pig.builtin.ToDate2ARGS.exec(ToDate2ARGS.java:33)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:330)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNextDateTime(POUserFunc.java:422)
at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:329)どんな助けや提案も大歓迎です。どうもありがとう！