我试图建立我的第一个猪的UDF在Java中使用AvroStorage(),并正在与Eclipse 建设时遇到麻烦调用函数我的代码如下所示:猪
REGISTER /home/user2/deb/demo.jar;
寄存器/归属/user2/deb/deb/avro-1.4.0.jar 注册/home/user2/deb/deb/json-simple-1.1.jar 注册/home/user2/deb/deb/piggybank.jar 注册/ home /user2/deb/jackson-core-asl-1.5.5.jar 注册/home/user2/deb//jackson-mapper-asl-1.5.5.jar
avro = LOAD '/user/user2/deb/part-r-00000.avro' USING AvroStorage('schema_check') AS (accntNo: chararray);
C = FOREACH avro GENERATE masking.AccountMask(accntNo); 转储C;
ERROR 1070: Could not resolve AvroStorage using imports: [, org.apache.pig.builtin., org.apache.pig.impl.builtin.]
java.lang.RuntimeException: Cannot instantiate:AvroStorage
at org.apache.pig.impl.PigContext.instantiateFuncFromSpec(PigContext.java:459)
仍然没有工作,现在它抛出另一个异常 – Dev
错误2997:无法从错误中重新创建异常:错误:找到类org.apache.hadoop.mapreduce.TaskAttemptContext,但期望的接口 org.apache.pig.backend.executionengine.ExecException:错误2997:无法重新创建从后备错误异常:错误:找到类org.apache.hadoop.mapreduce.TaskAttemptContext,但是界面预计 – Dev
以前我用错了piggybank.jar,现在这个问题已经解决了 – Dev