我写了一个pig script工作wordcount正常的。我可以在 hdfs 的输出目录中看到 pig 脚本的结果。但在我的控制台快结束时，我看到以下内容：
Success!
Job Stats (time in seconds):
JobId Maps Reduces MaxMapTime MinMapTIme AvgMapTime MedianMapTime MaxReduceTime MinReduceTime AvgReduceTime MedianReducetime Alias Feature Outputs
job_local1695568121_0002 1 1 0 0 0 0 0 0 0 0 words_sorted SAMPLER
job_local2103470491_0003 1 1 0 0 0 0 0 0 0 0 words_sorted ORDER_BY /output/result_pig,
job_local696057848_0001 1 1 0 0 0 0 0 0 0 0 book,words,words_agg,words_grouped GROUP_BY,COMBINER
Input(s):
Successfully read 0 records from: "/data/pg5000.txt"
Output(s):
Successfully stored 0 records in: "/output/result_pig"
Counters:
Total records written : 0
Total bytes written : 0
Spillable Memory Manager spill count : 0
Total bags proactively spilled: 0
Total records proactively spilled: 0
Job DAG:
job_local696057848_0001 -> job_local1695568121_0002,
job_local1695568121_0002 -> job_local2103470491_0003,
job_local2103470491_0003
2014-07-01 14:10:35,241 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Success!
如您所见，这项工作是成功的。但不是Input(s)and output(s)。他们俩都说successfully read/stored 0 records，并且计数器值都为0。为什么该值为零。这些不应该为零。
我在用hadoop2.2 and pig-0.12
这是脚本：
book = load '/data/pg5000.txt' using PigStorage() as (lines:chararray);
words = foreach book generate FLATTEN(TOKENIZE(lines)) as word;
words_grouped = group words by word;
words_agg = foreach words_grouped generate group as word, COUNT(words);
words_sorted = ORDER words_agg BY $1 DESC;
STORE words_sorted into '/output/result_pig' using PigStorage(':','-schema');
注意：我的数据存在于/data/pg5000.txt而不是在默认目录中/usr/name/data/pg5000.txt
编辑：这是将我的文件打印到控制台的输出
hadoop fs -cat /data/pg5000.txt | head -10
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cat: Unable to write to output stream.