Hi list,

I've been using hive to perform queries on data hosted on AWS S3, and my tables 
point at data by specifying the directory in which the data is stored, eg

$ create external table myData (str1 string, str2 string, count1 int) 
partitioned by <snip> row format <snip> stored as textfile location 
's3://mybucket/path/to/data';

where s3://mybucket/path/to/data is the "directory" that contains the files I'm 
interested in. My use case now is to create a table with data pointing to a 
specifc file in a directory:

$ create external table myData (str1 string, str2 string, count1 int) 
partitioned by <snip> row format <snip> stored as textfile location 
's3://mybucket/path/to/data/src1.txt';

and I get the error: "FAILED: Error in metadata: MetaException(message:Got 
exception: java.io.IOException Can't make directory for path 
's3://spinmetrics/global/counter_Fixture.txt' since it is a file.)". Ok, lets 
try to create the table without specifying the data source:

$ create external table myData (str1 string, str2 string, count1 int) 
partitioned by <snip> row format <snip> stored as textfile

Ok, no problem. Now lets load the data

$ LOAD DATA INPATH 's3://mybucket/path/to/data/src1.txt' INTO TABLE myData;

(referring to https://cwiki.apache.org/Hive/languagemanual-dml.html - 
"...filepath can refer to a file (in which case hive will move the file into 
the table)")

Error message is: " FAILED: Error in semantic analysis: Line 1:17 Path is not 
legal ''s3://mybucket/path/to/data/src1.txt": Move from: s3:// 
mybucket/path/to/data/src1.txt to: 
hdfs://10.48.97.97:9000/mnt/hive_081/warehouse/gfix is not valid. Please check 
that values for params "default.fs.name" and "hive.metastore.warehouse.dir" do 
not conflict."

So I check my default.fs.name and hive.metastore.warehouse.dir (which have 
never caused problems before):

$ set fs.default.name;
fs.default.name=hdfs://10.48.97.97:9000
$ set hive.metastore.warehouse.dir;
hive.metastore.warehouse.dir=/mnt/hive_081/warehouse

Clearly different, but which is correct? Is there an easier way to load a 
single file into a hive table? Or should I just put each file in a directory 
and proceed as before?

Thanks!

Tony







Tony Burton
Senior Software Engineer
e: tbur...@sportingindex.com<mailto:tbur...@sportingindex.com>

[cid:image001.png@01CE2A44.EDE53F90]<http://www.sportingsolutions.com/>

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