Eight practical ways to solve Spark data skew
What is data skew?
For distributed big data systems such as Spark/Hadoop, the large amount of data is not scary; what is scary is data skew.
For dis...
I saw on the Internet that "after the battery is disconnected, the power of the mobile phone is provided by the charger. At this time, the battery is in a dormant state, neither charging nor dischargi...
[i=s]This post was last edited by yangjiaxu on 2019-1-16 23:49[/i] I have been so depressed these past two days. I have not been able to log in to the Rapid IOT Studio online development environment. ...
[i=s]This post was last edited by Xiaotaiyangyy on 2021-8-11 14:49[/i]The silk screen on it says 96 TI. Is this from Texas Instruments? Why can't I find it?Because it is not clear, I re-uploaded...
1. ICEPICK_C: Error connecting to the target:
(Error -180 @ 0xFFFFFF4C) The controller has detected a target power loss.
The user must turn-on or connect the power supply for the target. (Emulation pa...
TI's touch chip MSP430FR2633 touch solution can support proximity sensing. Generally, the proximity sensing PCB Sensor will be placed close to the machine casing. Antistatic tests will be performed du...
According to MacRumors, Apple's next Apple Watch activity challenge will take place on International Women's Day, which this year falls on Tuesday, March 8. Activity challenges will appear ...[Details]
Zebra Smart VENUS system is more "AI". We learned from SAIC Roewe officials that it has exposed the interior design of the Roewe RX5 PLUS for the first time. The 14-inch floating curved large s...[Details]
- Issue 76 -
CAN bus is widely used in new energy vehicles due to its powerful anti-interference and error correction retransmission mechanism. However, in actual applications, it is still int...[Details]
Yesterday, Huawei officially announced that MateX2 will be officially released on February 22, but its final screen supplier is only BOE, not Samsung Display. Why is that? A supply chain source revea...[Details]
UK research consortium GW4 builds supercomputer with 6 times higher energy efficiency for climate science, medical research and more
HAMBURG, Germany – International Supe...[Details]
Market trends have forced digital signal processor (DSP), microprocessor and field programmable gate array (FPGA) manufacturers to continuously increase the clock frequency to achieve higher performan...[Details]
According to Sina Digital News on the afternoon of March 3, Meizu officially released the 2021 flagship mobile phone, the Meizu 18 series 5G dual flagship mobile phones, Meizu 18 and Meizu 18 P...[Details]
Tsinghua Unigroup announced that its controlling shareholder, Tibet Unigroup Communications, plans to transfer 347,295,413 shares of the company through a public solicitation transfer agreement, acco...[Details]
To popularize LED lamps, it is necessary not only to significantly reduce costs, but also to solve technical problems. Doug Bailey, Vice President of Marketing at Power Integrations, shared his exp...[Details]
The GPU war has reignited, and this time the protagonist is Huawei. Among the four high-end chips - GPU, CPU, FPGA, and DSP, if some domestic companies have been working hard to develop the latter th...[Details]
On December 9, the comprehensive energy management and control cloud platform of Fu Jen Senior High School in Wuxi City, Jiangsu Province was launched, realizing six major functions including energ...[Details]
The crystal oscillator in this example is 32M
#include reg52.h
#define uint unsigned int
void drive();
void delay(uint);
sbit pwm=P2^0;
uint set; //set is the steering gear angle flag
unsi...[Details]
Parallel programming is the earliest programming method with the most powerful functions, but it requires more pins to be connected and usually requires a high voltage of 12V~24V. To distinguish it...[Details]
LM2941/2941C is a five-terminal adjustable linear voltage regulator circuit, with an output voltage ranging from 5VV to 20V, a minimum input-output voltage difference of 0.5V, and a maximum output cu...[Details]
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