nsabharwal

su - hdfs
git clone https://github.com/pivotalsoftware/pivotal-samples.git

# I copied the files on /mnt
cd /mnt/pivotal-samples/sample-data   
# load data into HDFS
sh -x load_data_to_HDFS.sh   ## it will show you the output of the commands the script is running
 hdfs dfs -ls /retail_demo
####  Hive table  #####
https://github.com/pivotalsoftware/pivotal-samples/blob/master/hive/create_hive_tables.sql

rskumar

import collections
import json
import redis
import threading
from tornado import gen
from tornado import ioloop
from tornado import web
from tornado.options import define
from tornado.options import options
import tornadoredis

jvranish

#!/usr/bin/env python
# read abelectronics ADC Pi V2 board inputs with repeating reading from each channel.
# # Requries Python 2.7
# Requires SMBus 
# I2C API depends on I2C support in the kernel

# Version 1.0  - 06/02/2013
# Version History:
# 1.0 - Initial Release

mmerickel

from hashlib import sha256
import os

from pyramid.session import SignedCookieSessionFactory

def make_session_id():
  rand = os.urandom()
  return sha256(sha256(rand).digest()).hexdigest()

class MemorySessionSerializer(object):

korczis

proxy_cache_path  /var/cache/nginx/cache levels=1:2 keys_zone=cache:8m max_size=3000m inactive=600m;
proxy_temp_path /var/tmp;

# the IP(s) on which your node server is running. I chose port 3000.
upstream app_the_scratch {
    server 127.0.0.1:3000 weight=1 fail_timeout=60s;
}

# the nginx server instance
server {

ruckus

** Find commmonly accessed tables and their use of indexes:

SELECT relname,seq_tup_read,idx_tup_fetch,cast(idx_tup_fetch AS numeric) / (idx_tup_fetch + seq_tup_read) AS idx_tup_pct FROM pg_stat_user_tables WHERE (idx_tup_fetch + seq_tup_read)>0 ORDER BY idx_tup_pct;

Returns output like:

       relname        | seq_tup_read | idx_tup_fetch |      idx_tup_pct       
----------------------+--------------+---------------+------------------------
 schema_migrations    |          817 |             0 | 0.00000000000000000000
 user_device_photos   |          349 |             0 | 0.00000000000000000000