haridsv’s gists

haridsv / opencv_demo.py

Created October 7, 2011 00:16

Sample OpenCV 2.0 Python script to detect faces using a webcam

	import sys
	import cv

	class FaceDetect():
	def __init__(self):
	cv.NamedWindow ("CamShiftDemo", 1)
	device = 0
	self.capture = cv.CaptureFromCAM(device)
	capture_size = (320,200)
	cv.SetCaptureProperty(self.capture, cv.CV_CAP_PROP_FRAME_WIDTH, capture_size[0])

haridsv / tmux_local_static_install.sh

Last active September 23, 2021 08:05 — forked from ryin/tmux_local_install.sh

	#!/bin/bash

	# Script for installing tmux on systems where you don't have root access.
	# tmux will be installed in $HOME/local/bin.
	# It's assumed that wget and a C/C++ compiler are installed.

	# exit on error
	set -e

	# create our directories

haridsv / gist:5877544

Created June 27, 2013 15:43

Static methods in Python are inherited. See: http://stackoverflow.com/questions/136097/what-is-the-difference-between-staticmethod-and-classmethod-in-python/136138?noredirect=1#comment2605431_136138

	class B(object):
	@staticmethod
	def identify():
	return "B"

	def iden(self):
	return self.identify()

	class D(B):
	@staticmethod

haridsv / iowait.txt

Created November 7, 2014 09:06

Mirroring https://blog.pregos.info/wp-content/uploads/2010/09/iowait.txt

	What exactly is "iowait"?

	To summarize it in one sentence, 'iowait' is the percentage
	of time the CPU is idle AND there is at least one I/O
	in progress.

	Each CPU can be in one of four states: user, sys, idle, iowait.
	Performance tools such as vmstat, iostat, sar, etc. print
	out these four states as a percentage. The sar tool can
	print out the states on a per CPU basis (-P flag) but most

haridsv / After.png

Last active August 29, 2015 14:14

mcNewsSortOverlay.js: Show an overlay with a table of current news stories sorted by date on the MoneyControl portfolio news page.

haridsv / 1.error.txt

Last active August 29, 2015 14:20

OpenTSDB errors under load

2015-04-27 13:27:17,030 ERROR [New I/O worker #67] RegionClient: Uncaught error during de-serialization of MultiAction(batch=[PutRequest(table="tsdb", key=[0, 0, 22, 85, 27, -35, -64, 0, 0, 1, 0, 0, -64], family="t", qualifiers=[[17, -121]], values=[[0, 0, 0, 10, -64, 92, -47, 108]], timestamp=9223372036854775807, lockid=-1, durable=true, bufferable=true, attempt=2, region=RegionInfo(table="tsdb", region_name="tsdb,,1430141025970.93e30e6cb050703b91b3aae198c79e3c.", stop_key=[0, 0, 78, 85, 27, -105, 112, 0, 0, 1, 0, 0, -33, 0, 0, 13, 0, 0, 111, 0, 0, 14, 0, 0, 121, 0, 0, 15, 0, 0, 103, 0, 0, 16, 0, 0, 87])), PutRequest(table="tsdb", key=[0, 0, 29, 85, 27, -35, -64, 0, 0, 1, 0, 0, -64], family="t", qualifiers=[[17, -125]], values=[[0, 5, 18, 11]], timestamp=9223372036854775807, lockid=-1, durable=true, bufferable=true, attempt=2, region=RegionInfo(table="tsdb", region_name="tsdb,,1430141025970.93e30e6cb050703b91b3aae198c79e3c.", stop_key=[0, 0, 78, 85, 27, -105, 112, 0, 0, 1, 0, 0, -33, 0, 0, 13, 0, 0, 111, 0, 

haridsv / 01.Exception.txt

Last active August 29, 2015 14:20

OpenTSDB error net.opentsdb.core.IllegalDataException: Found out of order or duplicate data for a row that seems to have cells that belong to a different hour than it is meant for. The hour corresponding to the row (from key) is "Tue, 05 May 2015 23:00:00 GMT" but it has cells for the hour "Tue, 05 May 2015 18:00:00 GMT".

net.opentsdb.core.IllegalDataException: Found out of order or duplicate data: last_delta=3225000, delta=3225000, offending KV=KeyValue(key=[0, 0, 93, 85, 73, 75, 112, 0, 0, 1, 0, 1, 47, 0, 0, 2, 0, 0, 40], family="t", qualifier=[-55, -111], value=[0, -88], timestamp=1430848824713), row=[KeyValue(key=[0, 0, 93, 85, 73, 75, 112, 0, 0, 1, 0, 1, 47, 0, 0, 2, 0, 0, 40], family="t", qualifier=[0, 1], value=[0, -116], timestamp=1430848806993), KeyValue(key=[0, 0, 93, 85, 73, 75, 112, 0, 0, 1, 0, 1, 47, 0, 0, 2, 0, 0, 40], family="t", qualifier=[0, -80], value=";", timestamp=1430866814036), KeyValue(key=[0, 0, 93, 85, 73, 75, 112, 0, 0, 1, 0, 1, 47, 0, 0, 2, 0, 0, 40], family="t", qualifier=[0, -16], value="p", timestamp=1430848807144), KeyValue(key=[0, 0, 93, 85, 73, 75, 112, 0, 0, 1, 0, 1, 47, 0, 0, 2, 0, 0, 40], family="t", qualifier=[1, -32], value="~", timestamp=1430848807144), KeyValue(key=[0, 0, 93, 85, 73, 75, 112, 0, 0, 1, 0, 1, 47, 0, 0, 2, 0, 0, 40], family="t", qualifier=[2, -112], value=";", timestamp=14

haridsv / 01.Exception.txt

Last active August 29, 2015 14:20

OpenTSDB error net.opentsdb.core.IllegalDataException: Found out of order or duplicate data for a row that has no cells of its own. The hour of the row is "Tue, 05 May 2015 13:00:00 GMT", but all cells are for the hour " Wed, 06 May 2015 10:47:00 GMT".

2015-05-08 11:59:28,205 ERROR [New I/O worker #9] HttpQuery: [id: 0x53f85b19, /10.204.22.80:63089 => /10.230.229.36:4242] Internal Server Error on /q?start=2015/04/01-00:00:00&end=2015/05/08-00:00:00&m=sum:1d-avg:proc.stat.cpu&o=&yrange=%5B0:%5D&wxh=1416x626&json

net.opentsdb.core.IllegalDataException: Found out of order or duplicate data: cell=Cell([-108, 39], [0, 0, 0, 8, 20, 123, -24, 61]), delta=2370000, prev cell=Cell([-108, 35], [3, -111, -121, 60]), last_delta=2370000, in row=[KeyValue(key=[0, 2, -116, 85, 72, -66, -48, 0, 0, 1, 0, 1, 47, 0, 0, 2, 0, 0, 38, 0, 0, 8, 0, 1, 53], family="t", qualifier=[0, 7, 0, -9, 1, -25, 2, -41, 3, -57, 4, -73, 5, -89, 6, -105, 7, -121, 8, 119, 9, 103, 10, 87, 11, 71, 12, 55, 13, 39, 14, 23, 15, 7, 15, -9, 16, -25, 17, -41, 18, -57, 19, -73, 20, -89, 21, -105, 22, -121, 23, 119, 24, 103, 25, 87, 26, 71, 27, 55, 28, 39, 29, 23, 30, 7, 30, -9, 31, -29, 32, -41, 33, -57, 34, -73, 35, -93, 36, -109, 37, -121, 38, 119, 39, 103, 40, 87, 41, 71, 42, 51, 43, 39, 44, 23, 45, 7, 

haridsv / bookmarklet

Last active June 14, 2022 05:14

Paste Enabler, remove attributes from form text fields that restrict copy and paste operations. Tested to be working on many financial websites, though on some it causes duplication (workaround: undo).

javascript:s=document.createElement('script');s.type='text/javascript';document.body.appendChild(s);s.src='https://goo.gl/OrQlxL';void(0);

haridsv / hbase_shell_snippets.md

Last active June 22, 2019 10:17

Decode byte strings from HBase shell, a collection of snippets

    hbase(main):002:0> T = create 'emp',  {NAME => 'f', VERSIONS => 5}
0 row(s) in 1.1300 seconds

=> Hbase::Table - emp
hbase(main):003:0> T.put '001', 'f:name', 'Tom'
0 row(s) in 0.0890 seconds
hbase(main):003:0> T.put '001', 'f:name', 'Tom Too'
0 row(s) in 0.0890 seconds


  

Hari Krishna Dara haridsv