williamchang73

Replica set : 

P1 : ( Primary )
S1 : ( Sec 1 )
A2 : ( Arbiter )



1. start mongo with replica in all instance
  stop iptables

dmulligan

################################################################################
#!/bin/sh
#
# Author: dave-at-mulligan.ie
# Useful URLs:
# https://gist.github.com/dmulligan/5876324
# http://maymay.net/blog/2009/02/24/how-to-use-git-svn-as-the-only-subversion-client-youll-need/
# http://maymay.net/blog/2008/03/26/howto-use-git-for-personal-development-when-everyone-else-is-using-subversion-part-1/
# http://viget.com/extend/effectively-using-git-with-subversion
# http://www.jukie.net/~bart/blog/svn-branches-in-git

neomatrix369

Everything I Ever Learned About JVM Performance Tuning @Twitter- by Attila Szegedi

http://www.infoq.com/presentations/JVM-Performance-Tuning-twitter (video & slides)

9 Fallacies of Java Performance - by Ben Evans

http://www.infoq.com/articles/9_Fallacies_Java_Performance (video & slides)

Visualizing Java GC - by Ben Evans

http://www.infoq.com/presentations/Visualizing-Java-GC (video & slides)

Java Garbage Collection Distilled by Martin Thompson

inparallel

#include <sys/types.h>
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
 
#include <event.h>
#include <evhttp.h>
 
void generic_request_handler(struct evhttp_request *req, void *arg)

mrflip

Next Steps

• Measure time spend on index, flush, refresh, merge, query, etc. (TD - done)
• Take hot threads snapshots under read+write, read-only, write-only (TD - done)
• Adjust refresh time to 10s (from 1s) and see how load changes (TD)
• Measure time of a rolling restart doing disable_flush and disable_recovery (TD)
• Specify routing on query -- make it choose same node for each shard each time (MD)
• GC new generation size (TD)
• Warmers

• measure before/after of client query time with and without warmers (MD)

laserson

laserson@laserson-MBA ~ $ pip install pydoop
Downloading/unpacking pydoop
  Downloading pydoop-0.7.0-rc1.tar.gz (891Kb): 891Kb downloaded
  Running setup.py egg_info for package pydoop
    Traceback (most recent call last):
      File "<string>", line 14, in <module>
      File "/Users/laserson/build/pydoop/setup.py", line 567, in <module>
        "Intended Audience :: Developers",
      File "/usr/local/Cellar/python/2.7.3/lib/python2.7/distutils/core.py", line 152, in setup
        dist.run_commands()

repeatedly

http://hadoop-scr13th.eventbrite.com/

Impala

• github repository
  • No SpringSource!
• For low latency compared to MapReduce
• Mainly data analytics
  • Join and Sort are the bomb!
• Java Frontend and C++ Backend

cdesante

#Load ggplot default data: Diamonds
  library(ggplot2)
  library(gridExtra)
data(diamonds)
head(diamonds)
diamonds <-     diamonds[diamonds$color < "J",]
#http://127.0.0.1:25615/library/ggplot2/html/diamonds.html


B1 <- ggplot(data = diamonds ) + geom_point(aes( x = carat, y = price, color=color)

mammadori

from subprocess import Popen, PIPE
from os import environ

def source(script, update=True, clean=True):
    """
    Source variables from a shell script
    import them in the environment (if update==True)
    and report only the script variables (if clean==True)
    """

mpcabd

# This work is licensed under the GNU Public License (GPL).
# To view a copy of this license, visit http://www.gnu.org/copyleft/gpl.html

# For more information visit this blog post http://mpcabd.igeex.biz/python-celery-asynchronous-task-decorator/

# Written by Abd Allah Diab (mpcabd)
# Email: mpcabd ^at^ gmail ^dot^ com
# Website: http://mpcabd.igeex.biz

from django.utils.decorators import available_attrs