Error loading csv data into Hive table

问题:

i have a csv file in hadoop and i have a Hive table ,now i want to laoad that csv file into this Hive table

i have used load LOAD DATA local 'path/to/csv/file' overwrite INTO TABLE tablename;

ended up with this error :

Error in .verify.JDBC.result(r, "Unable to retrieve JDBC result set for ",  : 
Unable to retrieve JDBC result set for LOAD DATA local
'path/to/csv/file' overwrite INTO TABLE tablename 
(Error while processing statement: FAILED: 
ParseException line 1:16 missing INPATH at ''path/tp csv/file'' near '<EOF>'
)

Note: i am trying this using RJDBC connection in r

回答1:

I have developed a tool to generate hive scripts from a csv file. Following are few examples on how files are generated. Tool -- https://sourceforge.net/projects/csvtohive/?source=directory

1. Select a CSV file using Browse and set hadoop root directory ex: /user/bigdataproject/

2. Tool Generates Hadoop script with all csv files and following is a sample of generated Hadoop script to insert csv into Hadoop

   #!/bin/bash -v
   
   hadoop fs -put ./AllstarFull.csv /user/bigdataproject/AllstarFull.csv
   hive -f ./AllstarFull.hive
   
   
   hadoop fs -put ./Appearances.csv /user/bigdataproject/Appearances.csv
   hive -f ./Appearances.hive
   
   
   hadoop fs -put ./AwardsManagers.csv /user/bigdataproject/AwardsManagers.csv
   hive -f ./AwardsManagers.hive

3. Sample of generated Hive scripts

   CREATE DATABASE IF NOT EXISTS lahman;
   
   USE lahman;
   
   CREATE TABLE AllstarFull (playerID string,yearID string,gameNum string,gameID string,teamID string,lgID string,GP string,startingPos string) row format delimited fields terminated by ',' stored as textfile;
   
   LOAD DATA INPATH '/user/bigdataproject/AllstarFull.csv' OVERWRITE INTO TABLE AllstarFull;
   
   SELECT * FROM AllstarFull;

Thanks Vijay

回答2:

I think the command to load CSV to Hive table is ( when CSV is in HDFS).

LOAD DATA INPATH '/user/test/my.csv' INTO TABLE my_test;

回答3:

As your file is already present in the HDFS remove the keyword Local

LOAD DATA inpath 'path/to/csv/file' overwrite INTO TABLE tablename;