automatic fetcher

Analysis of The fetcher capture model of nutch 1.0 ----------------------------- 1. Introduction 2. Capture Process Analysis 3. End ------------- 1. Introduction As a sub-project of Apache Lucene, nutch is mainly used to collect and index webpage data. It integrates Apache hadoop, Lucene, and other sub-projects. The following figure shows the general crawling process of the nutch: 1. Import the initial website inject to the crawldb for preparation. 2.

Primary error message :error:org.apache.hadoop.mapreduce.task.reduce.shuffle$shuffleerror: Error in Shuffle in Fetcher#43workaround : Limit the shuffle memory usage of reduce hive:set mapreduce.reduce.shuffle.memory.limit.percent=0.1;MR:job.getConfiguration (). Setstrings ("Mapreduce.reduce.shuffle.memory.limit.percent", "0.1");principle Analysis : Reduce will initiate multiple fetch threads at map execution to a certain percentage to pull the outpu

C # automatic prompt, Automatic completion, and automatic completion in the TextBox input box,Function Overview Related attributes TextBox. AutoCompleteCustomSource attributes Gets or sets the custom T: System. Collections. Specialized. StringCollection to be used when the TextBox. AutoCompleteSource attribute is set to [CustomSource.TextBox. AutoCompleteMode a

Our idea is that each member of the team uploads their code to SVN at a specified time (for example, 18:30) and then updates the code at a specified time (for example, 18:30), executes the ant Packaging command, Finally, the APK package will be stored in the specified directory (or upload the specified FTP directory), other departments or colleagues can access the specified address to download the latest APK package. is to create a timed task in the Ubuntu system, which executes a written compil

C # automatic prompt, Automatic completion, and automatic completion in the TextBox input box, Function Overview Related attributes TextBox. AutoCompleteCustomSource attributes Gets or sets the custom T: System. Collections. Specialized. StringCollection to be used when the TextBox. AutoCompleteSource attribute is set to [CustomSource. TextBox. AutoCompleteMod

Preparation tools:SqlServer2008WinRar1. Set up maintenance schedule scheduled backups for SQL ServerThis is a simple operation, and you can follow the wizard to add a maintenance plan.2. Automatic compression scriptsc:\progra~2\winrar\winrar.exe a D:\bak\database_buckup_%date:~0,4%_%date:~5,2%_%date:~8,2% D:\bak\database_*%Date:~0,4%_%date:~5,2%_%date:~8,2%_*.BakThe format of the backup file is: Database_backup_2015_05_15_010001_5555338.bak,The compre

Features Overview related Properties Textbox.autocompletecustomsource Property Gets or sets the custom t:system.collections.specialized.stringcollection to use when the Textbox.autocompletesource property is set to [CustomSource]. Textbox.autocompletemode Property Gets or sets an option that controls how automatic completion applies to the TextBox.Property ValueType: System.Windows.Forms.AutoCompleteModeOne of the AutoCompleteMode values. The follo

the directories that need to be retrieved; G:\3241\3241string dir = @ "G:\3241\3241";DirectoryInfo Dir2 = new DirectoryInfo (dir);Defines the generic type that holds the directory;listThe converted file information;listTraverse the list of files in the directory;foreach (FileInfo fi in Dir2. GetFiles ()){Files that contain only 3241 of the file name;if (FI. Name.contains ("3241") ==true){fillist. Add (FI. Name); }}Traverse the name of the file after generating the transform;foreach (String filt

In the process of PHP development, if you want to introduce a class from the outside, you will typically use the include and require methods to include the file that defines the class. This is not a big problem when it comes to small-scale development. However, in large-scale development projects, doing so generates a large number of require or include method calls, which makes the code difficult to maintain without compromising efficiency, and the cost of require_once is great.Before PHP5, each

Many beginners are always unable to handle the color of the photo. Don't worry, Photoshop is like a camera with a palette of "automatic", you can easily "automatic levels", "automatic Contrast" and "Automatic Color", this practical and efficient method in most cases can help us get better results, Now let us study toge

SQL Server automatic backup, automatic compression, automatic deletion of old backup, SQL Server backup Compression Preparation tools:SqlServer2008WinRar 1. Set a scheduled backup for SqlServerThis operation is relatively simple. Simply add a maintenance plan according to the wizard. 2. Automatic compression of script

How can I disable automatic computer upgrade? Windows system automatic upgrade to close the tutorial, automatic upgrade to windows Sometimes, after we start the system or restart it, there will be a small circle that turns around and prompts that the system is being updated, and sometimes prompts that the system and the new failed, please do not close the comput

Import Java. io. file; An android tool class used in the past, Version Detection and automatic update. Poor versatility, right to take notes. Package COM. hiyo. game. PDK. tool; // Obtain the package name and version:

is automatic unpacking and automatic boxing Automatic Boxing: The base type is packaged with their corresponding packing class so that they have the object's characteristics and can invoke the method defined by the corresponding wrapper class, such as ToString (). As an example: Integer i0 = new Integer (0); Integer i1 = 2; Integer i1_ = integer.valueof

Thinkphp automatic verification and automatic filling are invalid solutions. Automatic verification and auto-filling are frequently used when thinkphp is used, but sometimes automatic verification and auto-filling do not work, in this article, thinkphp's automatic verificati

Automatic Verification and auto-filling are frequently used when thinkphp is used, but sometimes automatic verification and auto-filling do not work, this article analyzes the possible causes of thinkphp automatic verification and auto-filling failure and proposes corresponding solutions. (1) There is a problem with the create () method ThinkPHP

Java EE -------- use filters to enable automatic user logon, secure logon, and disable automatic logon. In our life, automatic login to an account is very common, so this function is implemented using filters. This section describes how to automatically log on to and cancel Automatic Logon, and enable one-day

maintenance window. The collection of statistical information is a resource-intensive task, so you may want to ensure that it does not affect the normal operation of the database. Statistical information collection can also be done by using the gather auto option in the process dbms_stats.gather_database_stats. Compared with the internal process scheduler in the system, dbms_stats.gather_database_stats does not distinguish the priority of the database object statistical information requirements

11g new Features-automatic SQL tuning (Automatic SQL Tuning)In Oracle 10g, an automatic SQL Tuning feature was introduced. In addition, ADDM monitors SQL statements that capture high loads.In Oracle 11g, the automatic SQL Tuning feature is enhanced by running SQL Tuning Advisor. By default,

Label:11g new Features-automatic SQL tuning (Automatic SQL Tuning) In Oracle 10g, an automatic SQL Tuning feature was introduced. In addition, ADDM monitors SQL statements that capture high loads. In Oracle 11g, the automatic SQL Tuning feature is enhanced by running SQL Tuning Advisor. By default,