1. In Coprocessor-start, a call on env.getTable will lead to connection refused error.
To solve this, using HTable constructor HTable(configuration, tableName) instead, configuration is necessary since zookeeper port number is not consistant always.
Remember to call htable.close() after operation to salve resource.
2. look for the thread using port 60010
lsof | grep 60010
Then kill the thread
Friday, May 11, 2012
Wednesday, April 25, 2012
mvn quick review
1. Get dependency source: mvn dependency:sources
2. Sometime, better remove the whole thing and install for multiple version updating
rm -Rf ~/.m2/repository/
In Eclipse, maven build... + insall + skip tests
3. An workaround for "Internal error when enable maven dependence management", check in with svn, them import --> import existing maven project, select local projects as a whole.
4. Switch maven version :
$ cd /usr/share/java
$ ls -q1 | grep maven #check if your desired maven version is there
apache-maven-2.0.9
maven-2.2.0
maven-2.2.1
maven-3.0.2
$ cd .. #go up
$ ls -l | grep maven #check what current version is
maven -> java/maven-3.0.2$ sudo rm maven #remove unwanted symlink
Password:
$ sudo ln -s java/maven-2.2.1 maven #set it to maven 2.2.1
5. mvn update version
3. An workaround for "Internal error when enable maven dependence management", check in with svn, them import --> import existing maven project, select local projects as a whole.
4. Switch maven version :
$ cd /usr/share/java
$ ls -q1 | grep maven #check if your desired maven version is there
apache-maven-2.0.9
maven-2.2.0
maven-2.2.1
maven-3.0.2
$ cd .. #go up
$ ls -l | grep maven #check what current version is
maven -> java/maven-3.0.2$ sudo rm maven #remove unwanted symlink
Password:
$ sudo ln -s java/maven-2.2.1 maven #set it to maven 2.2.1
5. mvn update version
mvn versions:set -DnewVersion=2.50.1-SNAPSHOT
It will adjust all pom versions, parent versions and dependency versions in a multi-module project.
update child module version
mvn versions:update-child-modules
If you made a mistake, do
mvn versions:revert
afterwards, or
mvn versions:commitFriday, January 20, 2012
OpenSuse install Chrome
1. Download Chrome frome google.com
2. At terminal: sudo zypper in ~/Downloads/[package name]
2. At terminal: sudo zypper in ~/Downloads/[package name]
Thursday, January 19, 2012
Kubuntu Missing Virtical Scoll Bar
sudo modprobe -r psmouse
sudo modprobe psmouse proto=imps
This enables scrolling for your current session - test and make sure it works. If so, you can make it permanent by:
sudo gedit /etc/modprobe.d/options
and adding the line:
options psmouse proto=imps
Then close and reboot.
Tuesday, December 6, 2011
OSX and Mac Quick Note
Add environment variable: apply commands in bash style in ~/.profile,
ex.
ACE_ROOT=~/Documents/ACE_wrappers; export ACE_ROOT
LD_LIBRARY_PATH=$ACE_ROOT/lib; export LD_LIBRARY_PATH
Install wget in OSX
curl -O http://ftp.gnu.org/gnu/wget/wget-1.13.4.tar.gz tar -xzvf wget-1.13.4.tar.gz cd wget-1.13.4 ./configure --with-ssl=openssl make sudo make install which wget #Should output: /usr/local/bin/wget
ex.
ACE_ROOT=~/Documents/ACE_wrappers; export ACE_ROOT
LD_LIBRARY_PATH=$ACE_ROOT/lib; export LD_LIBRARY_PATH
Install wget in OSX
curl -O http://ftp.gnu.org/gnu/wget/wget-1.13.4.tar.gz tar -xzvf wget-1.13.4.tar.gz cd wget-1.13.4 ./configure --with-ssl=openssl make sudo make install which wget #Should output: /usr/local/bin/wget
Sunday, November 27, 2011
Eclipse Shortcuts
My Useful Shortcut
goto line start Command + left arrow
goto line end
select to line end Command +shift + right arrow
goto line Command + L
delete a line Command + D
delete a line Command + D
Edit
Content Assist Alt+/ In Dialogs and Windows
Context Information Alt+? In Windows
Context Information Shift+Alt+? In Windows
Context Information Shift+Ctrl+Space In Windows
Copy Alt+W In Dialogs and Windows
Copy Ctrl+C In Dialogs and Windows
Copy Ctrl+Insert In Dialogs and Windows
Copy Esc W In Dialogs and Windows
Cut Ctrl+W In Dialogs and Windows
Cut Ctrl+X In Dialogs and Windows
Cut Shift+Del In Dialogs and Windows
Delete Delete In Windows
Find Previous Shift+Ctrl+K Editing Text
Find and Replace Alt+R In Windows
Find and Replace Esc R In Windows
Incremental Find Ctrl+J Editing Text
Incremental Find Ctrl+S Editing Text
Incremental Find Reverse Ctrl+R Editing Text
Incremental Find Reverse Shift+Ctrl+J Editing Text
Paste Ctrl+Y In Dialogs and Windows
Paste Shift+Ins In Dialogs and Windows
Quick Diff Toggle Shift+Ctrl+Q Editing Text
Quick Fix Ctrl+1 In Windows
Redo Ctrl+X R In Windows
Redo F10 In Windows
Redo Shift+Ctrl++ In Windows
Restore Last Selection Shift+Alt+Down Editing Java Source
Select All Ctrl+X H In Dialogs and Windows
Select Enclosing Element Shift+Alt+Up Editing Java Source
Select Next Element Shift+Alt+Right Editing Java Source
Select Previous Element Shift+Alt+Left Editing Java Source
Show Tooltip Description F2 Editing Java Source
Toggle Insert Mode Shift+Ctrl+Insert Editing Text
Undo Ctrl+X U In Windows
Undo F9 In Windows
Undo Shift+Ctrl+- In Windows
File
Close Ctrl+F4 In Windows
Close Ctrl+X K In Windows
Close All Ctrl+X Ctrl+C In Windows
Close All Shift+Ctrl+F4 In Windows
Close All Shift+Ctrl+W In Windows
New menu Shift+Alt+N In Windows
Print Alt+F9 In Windows
Print Esc F9 In Windows
Properties Alt+Enter In Windows
Refresh F5 In Windows
Rename F2 In Windows
Save Ctrl+X Ctrl+S In Windows
Save All Ctrl+X S In Windows
Save All Shift+Ctrl+S In Windows
Navigate
Backward History Alt+Left In Windows
Forward History Alt+Right In Windows
Go to Line Ctrl+L Editing Text
Go to Line Ctrl+X G Editing Text
Go to Matching Bracket Shift+Ctrl+P Editing Java Source
Go to Next Member Shift+Ctrl+Down Editing Java Source
Go to Previous Member Shift+Ctrl+Up Editing Java Source
Last Edit Location Ctrl+Q In Windows
Next Ctrl+. In Windows
Open Call Hierarchy Ctrl+Alt+H In Windows
Open Declaration F3 In Windows
Open External Javadoc Shift+F2 In Windows
Open Resource Shift+Ctrl+R In Windows
Open Structure Ctrl+F3 Editing Java Source
Open Type Shift+Ctrl+T In Windows
Open Type Hierarchy F4 In Windows
Open Type in Hierarchy Shift+Ctrl+H In Windows
Previous Ctrl+ In Windows
Quick Hierarchy Ctrl+T Editing Java Source
Quick Outline Ctrl+O Editing Java Source
Show In menu Shift+Alt+W In Windows
Refactor - Java
Change Method Signature Shift+Alt+C In Windows
Convert Local Variable to Field Shift+Alt+F Editing Java Source
Extract Local Variable Shift+Alt+L In Windows
Extract Method Shift+Alt+M In Windows
Inline Shift+Alt+I In Windows
Move - Refactoring Shift+Alt+V In Windows
Redo - Refactoring Shift+Alt+Y In Windows
Rename - Refactoring Shift+Alt+R In Windows
Show Refactor Quick Menu Shift+Alt+T In Windows
Undo - Refactoring Shift+Alt+Z In Windows
Run/Debug
Debug Ant Build Shift+Alt+D Q In Windows
Debug Eclipse Application Shift+Alt+D E In Windows
Debug JUnit Plug-in Test Shift+Alt+D P In Windows
Debug JUnit Test Shift+Alt+D T In Windows
Debug Java Applet Shift+Alt+D A In Windows
Debug Java Application Shift+Alt+D J In Windows
Debug Last Launched F11 In Windows
Debug SWT Application Shift+Alt+D S In Windows
Display Shift+Ctrl+D In Dialogs&Windows
Display Shift+Ctrl+V In Dialogs&Windows
Execute Ctrl+U In Windows
Inspect Shift+Ctrl+I In Dialogs&Windows
Resume F8 Debugging
Run Ant Build Shift+Alt+X Q In Windows
Run Eclipse Application Shift+Alt+X E In Windows
Run JUnit Plug-in Test Shift+Alt+X P In Windows
Run JUnit Test Shift+Alt+X T In Windows
Run Java Applet Shift+Alt+X A In Windows
Run Java Application Shift+Alt+X J In Windows
Run Last Launched Ctrl+F11 In Windows
Run SWT Application Shift+Alt+X S In Windows
Step Into F5 Debugging
Step Into Selection Ctrl+F5 Debugging
Step Over F6 Debugging
Step Return F7 Debugging
Toggle Line Breakpoint Shift+Ctrl+B In Windows
Toggle Step Filters Shift+F5 In Windows
Search
Open Search Dialog Ctrl+H In Windows
References in Workspace Shift+Ctrl+G In Windows
Show Occurrences in File Quick Menu Shift+Ctrl+U In Windows
Source
Add Block Comment Shift+Ctrl+/ Editing Java Source
Add Import Shift+Ctrl+M Editing Java Source
Add Javadoc Comment Shift+Alt+J In Windows
Format Esc Ctrl+F Editing Java Source
Format Shift+Ctrl+F Editing Ant Buildfiles
Indent Line Ctrl+I Editing Java Source
Open External Documentation Shift+F2 Editing Ant Buildfiles
Organize Imports Shift+Ctrl+O In Windows
Quick Assist - Assign to field Ctrl+2 F Editing Java Source
Quick Assist - Assign to local variable Ctrl+2 L Editing Java Source
Quick Assist - Rename in file Ctrl+2 R Editing Java Source
Remove Block Comment Shift+Ctrl+\ Editing Java Source
Remove Occurrence Annotations Shift+Alt+U Editing Java Source
Rename In File Shift+Alt+R Editing Ant Buildfiles
Show Source Quick Menu Shift+Alt+S In Windows
Show Tooltip Description F2 Editing Ant Buildfiles
Toggle Ant Mark Occurrences Shift+Alt+O Editing Ant Buildfiles
Toggle Comment Ctrl+/ Editing Java Source
Toggle Comment Ctrl+7 Editing Java Source
Toggle Comment Esc Ctrl+C Editing Java Source
Toggle Mark Occurrences Shift+Alt+O Editing Java Source
Text Editing
Clear Mark Ctrl+G Editing Text
Collapse Ctrl+Numpad_SubtractEditing Text
Copy Lines Ctrl+Alt+Down Editing Text
Cut to Beginning of Line Alt+0 Ctrl+K Editing Text
Cut to Beginning of Line Esc 0 Ctrl+K Editing Text
Cut to End of Line Ctrl+K Editing Text
Delete Next Ctrl+D Editing Text
Delete Next Word Alt+D Editing Text
Delete Next Word Ctrl+Delete Editing Text
Delete Next Word Esc D Editing Text
Delete Previous Word Alt+Backspace Editing Text
Delete Previous Word Ctrl+Backspace Editing Text
Delete Previous Word Esc Backspace Editing Text
Delete to End of Line Shift+Ctrl+Delete Editing Text
Duplicate Lines Ctrl+Alt+Up Editing Text
Expand Ctrl+Numpad_Add Editing Text
Expand All Ctrl+Numpad_Multiply Editing Text
Insert Line Above Current Line Shift+Ctrl+Enter Editing Text
Insert Line Below Current Line Shift+Enter Editing Text
Line Down Ctrl+N Editing Text
Line End Ctrl+E Editing Text
Line Start Ctrl+A Editing Text
Line Up Ctrl+P Editing Text
Move Lines Down Alt+Down Editing Text
Move Lines Up Alt+Up Editing Text
Next Column Ctrl+F Editing Text
Next Word Alt+F Editing Text
Next Word Ctrl+Right Editing Text
Next Word Esc F Editing Text
Page Down Ctrl+V Editing Text
Page Up Alt+V Editing Text
Page Up Esc V Editing Text
Previous Column Ctrl+B Editing Text
Previous Word Alt+B Editing Text
Previous Word Ctrl+Left Editing Text
Previous Word Esc B Editing Text
Scroll Line Down Ctrl+Down Editing Text
Scroll Line Down Ctrl+Z Editing Text
Scroll Line Up Alt+Z Editing Text
Scroll Line Up Ctrl+Up Editing Text
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