hive jdbc

what is hive. Data warehousing: Storing, querying, and analyzing large-scale datasql language: Easy-to-use class SQL query languageO Programming Model: Allows developers to customize UDFs, Transform, Mapper, and Reducer to make it easier to do work that complex mapreduce cannot doo data format: process data in any data format on Hadoop, or use an optimized format to store data on Hadoop, rcfile,orcfile,parquestData Services: HiveServer2, multiple API

ServiceHive-server-Hive Management ServiceHive-metastore-Hive metadata, used for type check and syntax analysis of metadata The specifications defined in this Article avoid confusion in understanding the configuration of multiple servers:All of the following operations must be performed on the host where Hive is located, that is, hadoop-secondary. 1. Preparation

transferred from: http://blog.csdn.net/lifuxiangcaohui/article/details/40588929Hive is based on the Hadoop distributed File system, and its data is stored in a Hadoop Distributed file system. Hive itself does not have a specific data storage format and does not index the data, only the column separators and row separators in the hive data are told when the table is created, and

Hive default metadata information is stored in Derby. Derby's built-in relational database and single session (only single client connection is supported, and an error will be reported when two clients are connected in the past ); Hive supports storing metadata in relational databases, such as MySQL and Oracle; In this case, the hive metadata is stored in MySQL.

In the previous articleArticleI listed a simple hive operation instance, created a table test, and loaded data to this table. These operations are similar to relational database operations, we often compare hive with relational databases because many knowledge points of hive are similar to those of relational databases. Relational databases also contain tables,

| *5dd77395eb71a702d01a6b0fadd8f2c0c88830c5 || Hive | % | *4DF1D66463C18D44E3B001A8FB1BBFBEA13E27FC || Hive | localhost | *4DF1D66463C18D44E3B001A8FB1BBFBEA13E27FC || Hive | Sparksinglenode | *4DF1D66463C18D44E3B001A8FB1BBFBEA13E27FC |+------------------+-----------------+-------------------------------------------+8 rows in Set (0.00 sec)Mysql> exit;Bye[Email p

their actual/home/hive/warehouse://192.168.1.108:3306/hive? Characterencoding=utf-8#需要在数据库里添加存储元数据的库HiveMySQL# #连接数据库的用户名和密码, authorized user name and password/home/hive/home/hive/tmp/home/hiveConfiguring log information for OutputHive.log.dir=/home/hiveHive.log.file=hive.logLog4j.appender.eventcounter=org.apache.hado

install postgresql, copy the postgres jdbc jar file to the hive lib directory.Upload files Uploadhive-0.10.0-cdh4.2.0.tarTo strongtop1/opt, And decompressInstall ipvs Create a database Create the database metastore and hiveuser. The password is redhat. psql -U postgresCREATE DATABASE metastore; \c metastore;CREATE USER hiveuser WITH PASSWORD 'redhat';GRANT ALL ON DATABASE metastore TO hiveuser;\q In

userGRANT All Privileges on *. * to ' Hive ' by ' [email protected] ' ; Create Database Privileges; 6.ConfigurationHive-site.xmlfile1) Configure the hive-site.xml file$HIVE _home/CONFCP HIVE-default. Xml.template hive-site.xmlModify :>trueSwitch >falseTo set the

Hive.metastore.schema.verification configuration item value to False7. Verifying the deploymentStart Metastore and HiveserverBefore using hive, you need to start the Metastore and Hiveserver services, which are enabled by the following command:Copy the MySQL JDBC driver package to the Lib directory of hive.Version of the JDBC driver package: Mysql-connector-java

database was not initialized. Please use Schematool (e.g./schematool-initschema-dbtype ...) to create the schema. If needed, don ' t forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ? createdatabaseifnotexist=true for MySQL) 2.2 Solutions Run the Schematool-initschema-dbtype mysql command in the scripts directory to initialize the hive metabase: xia

console and execute: show tables. If no error occurs, it indicates that the default version of hive is successfully installed (in fact, an error is reported, which is an XML error, I didn't think of the hive release version, and XML would have errors! The start tag and end tag of XML must beConsistent, according to the error message, change the auth tag to value, OK ).I gave it the default version, because

This page contains more information about setting up and using the ODBC Connector hive. This page contains the following topics: Before you start the SQL Connector software and hardware requirements to install and configure authentication in DSN configuration SSL configuration DSN run SQLPrepare optimization Note data type HIVEQL notes in Application Note Microsoft Access Microsoft E Xcel/Query screen before the desktop starts The ODBC Connector for t

1. Installing hiveBefore installing hive, make sure that Hadoop is installed, if it is not installed, refer to Centoos install Hadoop cluster for installation;　　　1.1, download, unzipDownload hive2.1.1:http://mirror.bit.edu.cn/apache/hive/hive-2.1.1/apache-hive-2.1.1-bin.tar.gz;Unzip the downloaded

Server2 provides new commands beelineJDBC/ODBC, which accesses hive through Java, with traditional database JDBC mode types, such as we use Java to access MySQL through JDBCWebUI, accessing hive in the browser Meta data: MetastoreHive stores metadata in a database (Metastore), which can be any of a relational database, including: Table name, database to which th

Apache Hive cannot collect stats Environment:Hive: apache-hive-1.1.0Hadoop: hadoop-2.5.0-cdh5.3.2Hive metadata and stats are stored using mysql.Hive stats parameters are as follows:Hive. stats. autogather: automatically collects statistics when the insert overwrite command is run. The default value is true.Hive. stats. dbclass: the database that stores the hive t