hive controller

1. Download the source code on the hive's official website and upload it to the server2. Go to the directory to unzipTAR-ZXVF apache-hive-0.14.0-src.tar.gz3. Go to the web directoryCD APACHE-HIVE-0.14.0-SRCCD Hwi/web4. Make the Web source into a zip packageZip hive-hwi-0.14.0.zip./*//packaged into a. zip file.5. Change the zip suffix to warHive-hwi-0.14.0.war6. C

"Programming Hive" Reading notes (two) Hive basics: first read is browse. Build knowledge index, because some knowledge may not be able to use, know is good. The parts of interest can be studied more. After the use of the time to look specifically. and combined with other materials.Chapter 3.Data Types and File FormatsRaw data types and collection data typesSelect out of data, the delimiter between columns

Part I: Building a hive JDBC development environmentBuild:Steps ? New project Hivetest? Import hive-dependent packages? Hive Command line start thrift service? Hive--service Hiveserver Part Two: Introduction of basic Operation ObjectsConnectionDescription: The connection object connected to

The hive Custom function consists of three UDFs, UDAF, UDTFUDF (User-defined-function) one in and outUDAF (user-defined Aggregation funcation) aggregation function, the more in one out. Count/max/minUDTF (user-defined table-generating Functions) One more step out, such as lateral view explore ()How to use: Add a custom function's jar file in a hive session, and then create a function to use itUdf1, the UDF

HIVE-UDF operationOperation procedure of UDF:Add A custom function to the jar file in the HIVE session , and then create the function, The function is then used. Below is an example of the following topics:Topic: Statistics of PV and UV for each activityFirst, Java through the regular expression, intercept the title name.Take a link to intercept the red string.http://cms.yhd.com/sale/vtxqclczfto? tc=ad.0.0.

Explain syntax Hive provides the explain command to display the query execution plan. Syntax: Explain [extended] Query The explain statement uses extended to provide additional information about the operation in the execution plan. This is a typical physical information, such as a file name. Hive queries are converted into sequences (this is a directed acyclic graph. These stages may be mapper/reduc

Hive has two data modification methods Load from file to hive table Hive does not perform any conversion when loading data to a table. The loading operation is a pure copy/move operation, which moves data files to the corresponding hive table. Syntax Load data [local] inpath 'filepath' [overwrite] into Table ta

Detailed description of how Mysql metadata generates Hive table creation statement annotation scripts, and metadata hive Preface This article describes how to generate a script for commenting on Hive table creation statements generated by Mysql metadata for your reference. I will not talk about it here. Let's take a look at the detailed introduction: Recently, wh

Label: First,Eclipse new Other-"map/reduce Project Project The project automatically contains the jar packages of the associated Hadoop, In addition, you will need to import the following hive and the MySQL-connected jar package separately: Hive/lib/*.jar Mysql-connector-java-5.1.24-bin.jar Second, the shipment hiveserver Command: bin/hive--service Hiveserver

1. Missing MySQL driver package 1.1 Problem Description caused by:org.datanucleus.store.rdbms.connectionpool.DatastoreDriverNotFoundException:The specified datastore Driver ("Com.mysql.jdbc.Driver") was wasn't found in the CLASSPATH. Please check your CLASSPATH specification, and the name of the driver. At Org.datanucleus.store.rdbms.connectionpool.AbstractConnectionPoolFactory.loadDriver ( abstractconnectionpoolfactory.java:58) at Org.datanucleus.store.rdbms.connectionpool.BoneCPConnectionP

Written in front one: In this paper, hive and hbase are integrated so that hive can read the data in HBase, so that the two most commonly used frameworks in the Hadoop ecosystem are combined to complement each other. Written in front two: Use software description To contract all software storage directory: /home/yujianxin First, hive integrated hbase pr

Describe:Hive Table Pms.cross_sale_path is established with the date as the partition, the HDFs directory/user/pms/workspace/ouyangyewei/testusertrack/job1output/ The data on the Crosssale, written on the $yesterday partition of the tableTable structure:HIVE-E "Set Mapred.job.queue.name=pms;drop table if exists pms.cross_sale_path;create external table Pms.cross_sale_ Path (track_id string,track_time string,session_id string,gu_id string,end_user_id string,page_category_id bigint, algorithm_id i

Read the table structure in hive. This article contains the table class, the field class is used to encapsulate the table structure, and it will be OK after a rough look. (Change the code format) 1. Table class Public class table { Private string tablename; Private list Public table (){ } Public table (string tablename, list This. tablename = tablename; This. Field = field; } Public String gettablename (){ Return tablename; } Public void setta

Tags: Word exist Derby configuration driver data pre XML color / /server110:3306/hive?createdatabaseifnotexist=true Hive replaces default Derby's hive-site.xml configuration with MySQL as metadata

Hive simple instructions for use, hive simple instructions for use I usage: Hive: Start hive The command must end with a semicolon and tell hive to execute the command immediately, case insensitive. Show tables; View tables Desc tablename; view the columns in the tabl

Use Cases of hive concurrency Model Concurrency support (http://issues.apache.org/jira/browse/HIVE-1293) is a must for databases and Their Use Cases are well understood. At least, we should try to support concurrent reading and writing. It is useful to add several locks that are currently locked. There is no direct requirement to add an API to explicitly obtain the lock. Therefore, all locks are obtained i

default database table is stored in the/user/hive/warehouse directory.(1) TextfileTextfile is the default format and is stored as a row store. Data is not compressed, disk overhead is large, data parsing cost is large.(2) SequencefileSequencefile is a binary file support provided by the Hadoop API, which is easy to use, can be segmented, and compressible. Sequencefile supports three types of compression options: NONE, RECORD, BLOCK. The record compre

Hive The main features of each version Introduction to Key new Feature of Hive versions The website downloads the introduction of the page Hive Foundationcommand-line interface The user interface provided by hive includes: CLI, Client, WebUI several ways, we usually mainly use CLI, the future cluster upgrade may have

Hive file Format1, TextfileDefault file formatData does not compress, disk overhead, data parsing overhead, can be combined with gzip, BZIP2 use (System Auto-detection, automatic decompression when executing queries)Data is not segmented by hive, so data cannot be manipulated in parallelTo create a command:2, Sequencefileis a binary file support provided by the Hadoop APIEasy to use, divisible, compressible

Transfer from http://superlxw1234.iteye.com/blog/1582880First, control the number of maps in the hive task:1. Typically, the job produces one or more map tasks through the directory of input.The main determinants are: The total number of input files, the file size of input, the size of the file block set by the cluster (currently 128M, can be set dfs.block.size in hive; command to see, this parameter can no