JAVA 中的 PIG UDF 错误 1070

我创造了UDF_UPPER.jar文件输入/home/GED385/pigScripts.

[GED385@snshadoope1 pigScripts]$ jar tf /home/GED385/pigScripts/UDF_UPPER.jar | grep UPPER
UPPER.class

但是在执行猪时我遇到了以下错误。

grunt> exec digital_web_trkg_9.pig
2012-11-30 00:15:32,027 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve UDF_UPPER.UPPER using imports: [, org.apache.pig.builtin., org.apache.pig.impl.builtin.]
Details at logfile: /data/1/GED385/pigScripts_digital/pig_1354233151486.log

猪猪脚本：

REGISTER /usr/lib/pig/contrib/piggybank/java/piggybank.jar;
REGISTER /home/GED385/pigScripts/UDF_UPPER.jar;

A = LOAD '/user/GED385/digital/scrn_rsln_id_cln.dat' USING PigStorage('|')
                  AS (web_vstr_scrn_rsln_id:int,web_vstr_scrn_rsln_desc :chararray, edw_publn_id:chararray);

B = LOAD '/user/GED385/digital/scrn_rsln_id1_cln.dat' USING PigStorage('|')
                  AS (web_vstr_scrn_rsln_id:int,web_vstr_scrn_rsln_desc :chararray, edw_publn_id:chararray);

H = LOAD '/user/GED385/digital/scrn_rsln_id_base_unload_cln.dat' USING PigStorage('|')
                  AS (web_vstr_scrn_rsln_id_1:int,web_vstr_scrn_rsln_desc :chararray, edw_publn_id:chararray);

J = GROUP H BY edw_publn_id;

K = FOREACH J GENERATE group,  MAX(H.web_vstr_scrn_rsln_id_1);

C = UNION A, B;

D = FILTER C BY web_vstr_scrn_rsln_desc is not null;

E = DISTINCT D;

F = JOIN E BY web_vstr_scrn_rsln_desc LEFT , H BY web_vstr_scrn_rsln_desc;

I = FILTER F BY H::web_vstr_scrn_rsln_id_1 is null;

--G = FOREACH I GENERATE H::web_vstr_scrn_rsln_id_1,E::web_vstr_scrn_rsln_desc,E::edw_publn_id;
G = FOREACH I GENERATE K.$1+1,E::web_vstr_scrn_rsln_desc,E::edw_publn_id,UDF_UPPER.UPPER(E::web_vstr_scrn_rsln_desc);

--L = JOIN G BY $2 LEFT , K BY $0;

DUMP G;

你的UPPER类属于哪个java包？

您需要使用包名称来限定您的 UPPER 类，以便 Pig 能够找到它。您不需要引用 jar 文件名。

所以如果你的 UPPER 班级属于com.blah

你会写：

G = FOREACH I GENERATE K.$1+1,E::web_vstr_scrn_rsln_desc,E::edw_publn_id,com.blah.UPPER(E::web_vstr_scrn_rsln_desc);