Technology Blog
the technology I am interested in and work with
Friday, December 7, 2012
my shell script cheat sheet
›
1. find the total line number of a fold for some files: find test -iname *.java | xargs wc -l | tail -1 2. count # of files in each fold...
insert control character with vi
›
insert a visible ^A , we must use: <ctrl> + v + a .
Thursday, November 1, 2012
Some svn commands
›
Create tag from trunk or branch : svn copy http://svn.mydomain.com/repository/myproject/trunk \ http://svn.mydomain.com/reposit...
Tuesday, July 17, 2012
Run Sqoop on Amazon Elastic MapReduce (EMR) with Amazon RDS
›
Amazon EMR doesn't have Sqoop installed. It is possible to run Sqoop with Amazon EMR. The following blog shows how to install and run ...
2 comments:
Tuesday, July 10, 2012
Run custom jar with elastic map reduce (EMR) on command line
›
I followed the instruction to run a custom jar on EMR: http://aws.amazon.com/articles/3938 I got stuck with step 5: 5. Run the job flo...
1 comment:
Friday, June 29, 2012
mvn test: LocalJobRunner.java with java.lang.OutOfMemoryError
›
When I run mvn test to unit test some hadoop related program, I got the following: java.lang.OutOfMemoryError: Java heap space at org....
Thursday, June 28, 2012
maven shade plugin: Invalid signature file digest for Manifest main attributes
›
If you get the following error message with maven shade plugin: Exception in thread "main" java.lang.SecurityException: Invalid ...
17 comments:
‹
›
Home
View web version