The premise of integrating hive is that the Apache Hadoop cluster can start normally.Hadoop version apach2.6.0 hive version: 1.2.11. Install MySQL and give permissions:1.1: Create hive user and password:Create user ' hive ' identified by ' 123456 '1.2: Create the database: c
addition, the independence of data also helps to improve the degree of parallelism. In addition, a single line of execution results in low cache performance.
Datasets represent bulk rows (default 1024, configurable).
In single-line mode, a row of data is processed by the entire query tree before the next line is processed, and now the bulk behavior unit is executed.
Performance testing
File format
Query plan
Query execution
necessary to use a view to split the dimensions and measures of the complex types field.In our current practice, some of the fact tables that cube relies on are created by view, which adds a layer of mapping that reduces the cube's reliance on the original table and increases flexibility.3. Using View LimitsHive cannot get data from view using Hcatalog due to hive limitations(https://issues.apache.org/jira/browse/
12 tips for easy survival in Apache Hive
Learn to live with Apache Hive in 12 easy steps
Hive allows you to use SQL on Hadoop, but optimizing SQL on a distributed system is different. Here are 12 tips that allow you to easily master Hiv
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.
Apache Hive Security Restriction Bypass Vulnerability (CVE-2014-0228)
Release date:Updated on:
Affected Systems:Apache Group HiveDescription:--------------------------------------------------------------------------------Bugtraq id: 68039CVE (CAN) ID: CVE-2014-0228Apache Hive is a database software that facilitates query and management of large datasets on dist
You are welcome to reprint it. Please indicate the source, huichiro.Wedge
Hive is an open source data warehouse tool based on hadoop. It provides a hiveql language similar to SQL, this allows upper-layer data analysts to analyze massive data stored in HDFS without having to know too much about mapreduce. This feature has been widely welcomed.
An important module in the overall hive framework is the executio
[Author] Nick Kew [press] Prentice Hall[File format] PDF [ISBN] 0-13-240967-4
Chapter 1 applications development with ApacheChapter 2 The Apache platform and architectureChapter 3 the Apache Portable RuntimeChapter 4 Programming Techniques and caveatsChapter 5 writing a content GeneratorChapter 6 request processing cycle and metadata handlersChapter 7 AAA: Access, authentication, and authorizationChapter 8
Do not use the Local keyword load data local inpath Yes No
Beeline Mode problem, is Beeline bug, use Nohup sh xxx.sh also error
BEELINE-F Execute SQL file if reported "Error:error while compiling statement:FAILED:ParseException line 1:814 cannot recognize input NE Ar '; '
BEELINE-E "SQL statement" execution specifies that removing a header is a bug that doesn't work.
Apache Hive 0.14 be
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