Name
Value
Description
Hadoop. Job. History. Location
The path of the historical job file, which has no configuration parameters and does not need to be written in the configuration file. It is in the History folder of logs by default.
Hadoop. Job. History. User. Location
Location of historical User Files
Io. Sort. Factor
30
The number of files to be sorted when stream merging is processed. I think it is the number of files to be opened during
version under Linux is 6.1.2.BitTorrent's official website: http://bitconjurer.org/BitTorrent/Installing BitTorrent softwareBecause the software is written in Python, you need to use commands before installing BitTorrent:#rpm-qa|grep PythonCheck that the Python language is configured. Otherwise, you will need to download the installation to the official Python website http://www.python.org, and then execute the following command to install the BitTorrent software:#rpm-IVH bittorrent-6.1.2.pytho
, you need to open the appropriate system services.
1. Open System Support
Enabling the SSDP Discovery service in Windows XP enables the SSDP Discovery service in Windows Vista.
2. Turn on UPnP support
Select tools → configuration, then click the bt/port Settings item on the left, and then on the right, select the Allow UPnP Automatic Port mapping feature check box. After that, we can see the Thunder 5 in the lower left-hand corner of the "network" item icon is already green, click to see th
problem of large capacity storage and load balancing. Especially suitable for the document as the carrier of online services, such as photo albums, video sites and so on.
The FASTDFS server has two roles: Tracker (tracker) and storage node (storage). The tracker mainly does the dispatching work and plays the role of load balancing on the access.
Storage node sto
Fastdfs Open Source Architecture version of the Chinaunix site in the link address, the moderator is Fastdfs's author
Http://bbs.chinaunix.net/forum-240-8.html
The FASTDFS server has two roles: Tracker (tracker) and storage node (storage). The tracker mainly does the dispatching work and plays the role of load balancing on the access.Storage node storage file
When configuring Fastdfs, modifying the configuration file is a very important step and understanding the meaning of each item in the configuration file is more important, so I refer to the great God's post and organize the explanation of the configuration file. The original post is as follows: Http://bbs.chinaunix.net/thread-1941456-1-1.html, because the original post in the earlier version, so I have to modify the existing version, the original post did not client.conf introduction, here I add
introduction of Fastdfs
Fastdfs is an open source lightweight Distributed File system developed by HAPPY_FISH100, and she manages the files, including file storage, file synchronization, file access (file upload, file downloading), etc., which solves the problem of large capacity storage and load balancing. Especially suitable for the document as the carrier of online services, such as photo albums, video sites and so on. The FASTDFS server has two roles: Tr
Recently, to improve storage performance (mainly write performance) for small files (around 100KB), the idea of using FASTDFS requires a simple test of its performance.
1. Install Fastdfs
Cd/opt mkdir fastdfs cd fastdfs
git clone https://github.com/happyfish100/fastdfs.git
git clone https://github.com/happyfish100/libfastcommon.git
cd/opt/fastdfs/libfastcommon
./make.sh /make.sh Install
cd/opt/fastdfs/fastdfs
./make.sh /make.sh InstallAfter successful installation, Fastdfs
installed in the/
approaching process of swinging constantly. We can try to remove the restriction.
For as unfamiliar, I would like to explain this: enemy._x + = (dx>=0), Enemyspeed:-enemyspeed), in fact, is equivalent to the following sentence:
if (dx >= 0) {enemy._x = enemy._x + enemyspeed;} else {enemy._x = Enemy._x-enemyspeed;}
This is used to determine the direction of the enemy's movement, according to DX dy positive and negative conditions, to determine which direction to move.
OK, so far, I think it
Tracker on token configuration/etc/fdfs/http.conf:
# If use tokens to Anti-steal# default value is False (0)Http.anti_steal.check_token=true# token TTL (Time to live), seconds# Default value is 600Http.anti_steal.token_ttl=60# secret key to generate Anti-steal token# This parameter must is set when Http.anti_steal.check_token set to True# The length of the secret key should not exceed byteshttp.anti_steal.secret_key=fastdfs1234567890# Return the conte
the/usr/bin directory. Including: btmaketorrent. py (seed making tool), bttest. py (test seed tool), bttrack. py (Tracker tool) and btdownloadheadless. py (used to create a Shared Source Tool) and btlaunchtasks. py (the Shared Source Tool is started in the background) and btshowmetainfo. py (tool for viewing download conditions) and btdownloadgui. py (graphical sharing Source Tool), btmaketorrent. py (graphical seed making tool ).
2. Configure and s
New feature 1: the Tracker and navigation bar of the desktop search bar are similar to the Ubuntu7.10 search bar of Google Desktop. I saw for the first time in Linux that it was the search bar integrated by SUSELinux, similar to the search usage of Vista. Tracker has powerful search functions. It can search any file or content, including documents, music, logs, and chat records, which is easier to use than
The download server provides download services for every user who sends a download request. The download service is point-to-point and one-to-one. BitTorrent works in different ways, it is the part of content contributed by each node. It serves several nodes at the same time until all user downloads are completed.
Generally, if there are too many people downloading HTTP/FTP, the server can easily reach the bottleneck and become slow. BitTorrent downloads feature that the more people download, t
. The actual crawling part is solved by the consumer, and the code is used: new fetcherthread (getconf ()). start (); we can see that we should go to the run function of fetcherthread to execute a series of page captures., Parsing, and other operations. (In addition, from the debugging process, you can see the property configuration file information: {job. end. retry. interval = 30000, FTP. keep. connection = false, Io. bytes. per. checksum= 512, mapred. job.
keep increasing during application running.
Allocation tracker (assign tracker)
The allocation tracker view displays deeper details about the allocation. Click Start tracking, perform an operation in the application, and then click get allocations )".
Figure 5
The list is sorted by allocation. The latest allocation is displayed first. Select it to see a stack t
, you can hold a service named "heart rate monitor", which contains characteristic words such as "Heart Rate Measurement ". You can find a series of GATT-based profiles and services on mongoth.org.
1.2 roles and functions
The following are some applicable roles and functions for an Android device to interact with a BLE device:
* Central and peripheral devices.This applies to the connection of BLE itself. Devices that act as central devices are responsible for scanning and searching for adverti
download time can be calculated. Similarly, it can be used to record the playback of Flash animation. Note that the fourth parameter is an integer.
Extended Application
Here we will introduce two JS libraries:
Timetracker ()
Http://code.google.com/apis/analytics/samples/time-tracker.js
Mouseovertracker ()
Http://code.google.com/apis/analytics/samples/mouseover-tracker.js
They need to be loaded to the statistics page.
Timetracker () has two main features:
1. Record duration
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