ファイルの名前が「data」で、次のようになっていると仮定しましょう。
2343234 {23.8375,-2.339921102} {(343.34333,-2.0000022)} 5-23-2013-11-am
2 番目のフィールドを座標番号のペアに変換する必要があります。そこで、次のコードを書き、それを basic.pig と呼びました。
A = LOAD 'data' AS (f1:int, f2:chararray, f3:chararray. f4:chararray);
B = foreach A generate STRSPLIT(f2,',').$0 as f5, STRSPLIT(f2,',').$1 as f6;
C = foreach B generate REPLACE(f5,'{',' ') as f7, REPLACE(f6,'}',' ') as f8;
次に (float) を使用して文字列を float に変換します。しかし、コマンド「REPLACE」が機能せず、次のエラーが発生します。
-bash-3.2$ pig -x local basic.pig
2013-06-24 16:38:45,030 [main] INFO org.apache.pig.Main - Apache Pig version 0.11.1 (r1459641) compiled
Mar 22 2013, 02:13:53 2013-06-24 16:38:45,031 [main] INFO org.apache.pig.Main - Logging error messages to: /home/--/p/--test/pig_1372117125028.log
2013-06-24 16:38:45,321 [main] INFO org.apache.pig.impl.util.Utils - Default bootup file /home/isl/pmahboubi/.pigbootup not found
2013-06-24 16:38:45,425 [main] INFO org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to hadoop file system at: file:///
2013-06-24 16:38:46,069 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1000: Error during parsing. Lexical error at line 7, column 0. Encountered: <EOF> after : ""
Details at logfile: /home/--/p/--test/pig_1372117125028.log
そして、これは pig_137..log の詳細です
Pig Stack Trace
---------------
ERROR 1000: Error during parsing. Lexical error at line 7, column 0. Encountered: <EOF> after : ""
org.apache.pig.tools.pigscript.parser.TokenMgrError: Lexical error at line 7, column 0. Encountered: <EOF> after : ""
at org.apache.pig.tools.pigscript.parser.PigScriptParserTokenManager.getNextToken(PigScriptParserTokenManager.java:3266)
at org.apache.pig.tools.pigscript.parser.PigScriptParser.jj_ntk(PigScriptParser.java:1134)
at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:104)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:194)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:170)
at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:84)
at org.apache.pig.Main.run(Main.java:604)
at org.apache.pig.Main.main(Main.java:157)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.main(RunJar.java:197)
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