prasanthj

Enable native memory tracking in JVM by specifying the following flag

-XX:NativeMemoryTracking=detail

Know the <PID> of the java process

jps

To print ps based RSS

ps -p <PID> -o pcpu,rss,size,vsize

To print native memory tracking summary

epiphani

So Hive in CDH is horribly, painfully slow. Cloudera ships Hive 1.1, which is actually moderately modern. It is, however, very badly configured out of the box and patched with custom code from Cloudera. With a bit of effort, we managed to improve hive performance considerably. We really shouldn't have to do this, but Cloudera is actively working against supporting a performant Hive.

First, building Tez was fairly straightforward. Using the instructions at https://github.com/apache/tez/blob/master/docs/src/site/markdown/install.md, the only change was to use the version string "2.6.0" for the build. I believe that was the default. Don't use the CDH string, it won't work.

At the bottom of the installation instructions, there's mention of the fact that to use the local hadoop jars (rather than those packaged with tez) you must unpack the jars in HDFS rather than using the tarball. In this case, unpack the tez-minimal tarball and upload the contents to /apps/tez-0.7.0 (or whatever you prefer). Don't fo

t3rmin4t0r

import json
import sys

class ATSFile(object):
	def __init__(self, name):
		self.data = json.load(open(name))
		self.name = name
	def dump(self):
		info = self.data["otherinfo"]
		q = json.loads(info["QUERY"])

johnynek

/**
 * To get started:
 * git clone https://github.com/twitter/algebird
 * cd algebird
 * ./sbt algebird-core/console
 */

/**
 * Let's get some data. Here is Alice in Wonderland, line by line
 */

jiaaro

// How to use:
//   1. Open "Script Editor" (requires OS X 10.10 Yosemite)
//   2. Change the language from "AppleScript" to "JavaScript"
//   3. Paste the code below and replace the safari example.
//
// More info:
// https://developer.apple.com/library/mac/releasenotes/InterapplicationCommunication/RN-JavaScriptForAutomation/index.html

var sys_events = Application("System Events");

lfittl

# Copyright (c) 2014 Lukas Fittl <[email protected]>
#
# Released in the public domain - fork as you wish.

require 'rubygems'
require 'mixlib/cli'
require 'pg'
require 'pg_query'
require 'curses'

badboy

Original link: http://www.concentric.net/~Ttwang/tech/inthash.htm
Taken from: http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm
Reformatted using pandoc

Integer Hash Function

Thomas Wang, Jan 1997

last update Mar 2007

ClaudiuC

(function () {
    function c() {
        var e = document.createElement("link");
        e.setAttribute("type", "text/css");
        e.setAttribute("rel", "stylesheet");
        e.setAttribute("href", f);
        e.setAttribute("class", l);
        document.body.appendChild(e)
    }
    function h() {

benjchristensen

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

adgedenkers

tell application "System Events"
	-- get current clipboard contents as a string
	set CurrentClipboard to the clipboard as string
	
	-- set the clipboad to your password	
	set the clipboard to "Y0urVPNPa$$w0rd"
	
	-- start playing with the VPN	
	tell current location of network preferences