Database Reference
In-Depth Information
Here's a sampling of the CSV file contents via an HDFS file system
cat
command, which dumps the contents of
the file /data/hunk/rdbms/rawdata.txt. The Linux
head
command limits the output to five lines:
[hadoop@hc2nn local]$ hdfs dfs -cat /data/hunk/rdbms/rawdata.txt | head -5
1995,ACURA,INTEGRA,SUBCOMPACT,1.8,4,A4,X,10.2,7,28,40,1760,202
1995,ACURA,INTEGRA,SUBCOMPACT,1.8,4,M5,X,9.6,7,29,40,1680,193
1995,ACURA,INTEGRA GS-R,SUBCOMPACT,1.8,4,M5,Z,9.4,7,30,40,1660,191
1995,ACURA,LEGEND,COMPACT,3.2,6,A4,Z,12.6,8.9,22,32,2180,251
1995,ACURA,LEGEND COUPE,COMPACT,3.2,6,A4,Z,13,9.3,22,30,2260,260
Now that some basic configuration files are set up, I can start Hunk.
Running Hunk
Hunk is started from the bin directory within the installation as the Linux hadoop account user.
■
Note
when you first start hunk, you must use the
--accept-license
option; after that, it may be omitted.
In either case, you start Hunk by using the
splunk
command:
[hadoop@hc2nn local]$ cd /usr/local/hunk/bin
[hadoop@hc2nn bin]$ ./splunk start --accept-license
When starting, Hunk reads its configuration files, so you need to monitor the output for errors in the
configuration files' error messages, such as:
Checking conf files for problems...
Invalid key in stanza [source::/data/hunk/rdbms/...] in /usr/local/hunk/etc/system/local/
props.conf, line 3: DELIMS (value: ", ")
If any errors occur, you can fix the configuration files and restart Hunk, as follows:
[hadoop@hc2nn bin]$ ./splunk restart
If all is well, you are presented with a message containing the URL at which to access Hunk's web-based user
interface:
The Splunk web interface is at http://hc2nn:8000
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