本地load data到hive表中,可能会由于一些表格式的问题或文本格式问题,导致上传失败。
总结原因:
1. 上传格式和建表格式不匹配
自己上传的为txt文本,而创建表指定的file format 是sequencefile。
hive> load data local inpath '/home/hadoop/ma_test.txt' into table sep26_ma_deposit_dim;
Copying data from file:/home/hadoop/ma_test.txt
Copying file: file:/home/hadoop/ma_test.txt
Loading data to table dw.sep26_ma_deposit_dim
Failed with exception Wrong file format. Please check the file's format.
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MoveTask
思路:
先导入存为textfile,然后再执行MR,覆写这个表
hive> create table tempshengli_test (t1 int, t2 int, t3 int, t4 string) row format delimited fields terminated by '\t' stored as textfile;
OK
Time taken: 0.256 seconds
hive> desc tempshengli_test;
OK
t1 int
t2 int
t3 int
t4 string
Time taken: 0.141 seconds
hive> load data local inpath '/home/hadoop/ma_test.txt' into table tempshengli_test;
Copying data from file:/home/hadoop/ma_test.txt
Copying file: file:/home/hadoop/ma_test.txt
Loading data to table dw.tempshengli_test
OK
Time taken: 4.228 seconds
hive> insert overwrite into table sep26_ma_deposit_dim as select * from tempshengli_test;
FAILED: Parse Error: line 1:17 cannot recognize input near 'into' 'table' 'sep26_ma_deposit_dim' in destination specification
hive> insert overwrite table sep26_ma_deposit_dim select * from tempshengli_test;
Total MapReduce jobs = 2
Ended Job = job_201403301416_112745
16 Rows loaded to sep26_ma_deposit_dim
OK
Time taken: 64.341 seconds
drop table tempshengli_test
2.文本格式不匹配
还要注意格式, Unix UTF-8和Windows上的ANSI上传上去不一样。