hive patches

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

One, hive command line 1, hive support some of the commands Command Description quit Use quit or exit to leave the interactive shell. Set Key=value Use the To set value of particular configuration variable. One thing to note here's if you misspell the variable name, the CLI won't show an error. Set This would print a list of configuration variables that is overridden by user or

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

Here list common operations, more refer to https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-Create%2FDrop%2FTruncateTable Simple Table Creation Create Table table_name (ID int, dtdontquery string, name string) Create a partitioned table Create Table table_name (ID int, dtdontquery string, name string) partitioned by (date string) A table can have one or more partitions. Each partition exists in a

Microsoft released the ANI security patch, but it also caused a lot of trouble while fixing the vulnerability. A forum administrator said: "Some users in our security forum have noticed that Microsoft's latest Windows Patch (KB925902) has caused many problems. Most obviously, the patch prevents anti-virus software from being loaded. Some people say that the computer cannot even be started after the update is installed. At present, we have received reports about AVG, Realtec, F-Secure errors, Va

OpenSSL will release security patches tomorrow to fix undisclosed 0-day high-risk Vulnerabilities OpenSSL officially issued a vulnerability warning, reminding the system administrator to prepare for OpenSSL upgrade. The latest version of OpenSSL will be released on April 9, July 9 (this Thursday) to fix an undisclosed high-risk vulnerability. Many security experts speculate that this high-risk vulnerability may be another "heartbleed" vulnerability "

According to foreign media reports, Adobe released a security notice on Thursday and patches for the two latest Security Vulnerabilities found in Flash. According to ArsTechnica, one of the security vulnerabilities affects Apple's Mac platform, and the other affects Microsoft's Windows platform. They will use the Flash Player vulnerabilities to install malware on users' systems. Although users in other operating systems, such as Linux, have not repor

. If such ICMP messages are repeatedly sent, the device may become inaccessible to the network. The IETF document also outlines another DoS attack method that uses the path's largest transmission unit to discover PMTUD. PMTUD is a mechanism of ICMP to process error messages.Cisco indicates that only routers and other devices running IOS with PMTUD enabled are under this attack. It indicates that ICMP "hardware error" message attacks are invalid for Cisco devices. However, all versions of IOS10.x

Install patches quickly. Exim causes 0.4 million servers to face severe code execution vulnerabilities. An unknown but widely used email program Exim vulnerability may expose up to 0.4 million of servers around the world to severe attacks until they install updates. Exim is one of the email MTA services available for Ubuntu, and Exim4 is the default setting for Debian. Exim stands for the experimental Internet Mailer, developed for Unix systems at

Alert! After installing the CPU vulnerability patch in Win7, a blue screen is displayed! Security mode cannot be used. win7 vulnerability patches After reporting last week that Windows 10 has accumulated an update of KB4056892, which causes incompatibility with AMD Athlon 64 x2 processors, it has recently reported that the upgrade of KB4056894 released by Microsoft for Windows 7 has failed, the error code 0x000000c4 is displayed on the blue screen. A

About the Linux kernel preemptible patch principle-Linux general technology-Linux programming and kernel information, the following is a detailed description. When the CPU runs in the kernel, it cannot be preemptible everywhere. There are some gaps in the kernel. In this case, it is safe to preemptible, the basic principle of kernel preemption patch is to regard SMP parallel code segments as areas where kernel preemption can be performed. The Linux 2.4 kernel precisely refined the kernel thre

Find out the patches not available in linux-general Linux technology-Linux programming and kernel information. The following is a detailed description. I first used a perl program to read the patch directory on ftp.kernl.org in a file list. Then I used shell to find the unpatched patch. It was written in C at the beginning, and it was quite troublesome, so I wrote it while watching the shell. The perl program is as follows: CODE :#! /U

-itemproperty-erroraction Stop-path ($RegistryPrefix+"hkey_local_machine\software\microsoft\net Framework setup\ndp\v4\client")| Select-expandproperty"Version")-eq"4.0.30319.0") ) {Write-host". NET Framework 4-client"; }} Catch {}#4-fullTry {IF((Get-itemproperty-erroraction Stop-path ($RegistryPrefix+"hkey_local_machine\software\microsoft\net Framework setup\ndp\v4\full")| Select-expandproperty"Install")-eq1)-and(Get-itemproperty-erroraction Stop-path ($RegistryPrefix+"hkey_local_machine\softwar

privilege if an attacker logs on to the system and runs a specially crafted application. ImportantPrivilege elevation Reboot required Microsoft Windows ms16-035 Security update for the. NET Framework to fix security feature Bypass Vulnerability (3141780)This security update fixes a vulnerability in the Microsoft. NET Framework. If the. NET Framework component does not correctly validate certain elements in the signed XML document, a security feature bypass vuln

;$ Limitflush =50000; # Nb of records in data arrays after how we need to flush data on diskThis can effectively increase the speed of statistics (reduce disk I/O) and avoid excessive statistical files caused by monthly summary of data; Set the configuration file as follows:Include "common. conf"Logfile = "/home/Apache/logs/access_log. % YYYY-24 % MM-24 % DD-24"Sitedomain = "www.chedong.com"Hostaliases = "chedong.com"Defaultfile = "index.html"Dirdata = "/home/Apache/cgi-bin/AWStats/data /" Su