Cloudera impala is an engine that runs distributed queries on HDFS and hbase.This source is a snapshot of our internal development version. We regularly update the version.This readme document describes how to use this source to build cloudera Impala. For more information, see:
Https://ccp.cloudera.com/display/IMPALA10BETADOC/
Cloudera Certified Administrator forapache Hadoop (CCA-500)Number of Questions:QuestionsTime Limit:minutesPassing Score:70%Language:中文版, JapaneseExam Sections and Blueprint1. HDFS (17%)
Describe the function of HDFS daemons
Describe the normal operation of a Apache Hadoop cluster, both in data storage and in data processing
Identify current features of co
Create a cloudera-SCM user (with a branch, This is a Linux Command ,)
[[emailprotected]cloudera-manager-5.1.0]$sudouseradd--system--home=/opt/cloudera-manager-5.1.0/run/cloudera-scm-server--no-create-home--shell=/bin/false--comment"ClouderaSCMUser"cloudera-scm
Change server_
Services:haddoop components that can be deployed on cluster, such as Hdfs,yarn,hbase.Roles: When the service is configured, it is created by Cloudera Manager. For example, Namenode is a role of the HDFs service.Role group: The management of role can divide the same category of roles (such as datanode) into different role groups. Each role group can have its own s
Provider are required for any authorization system. Therefore, they are public modules and can serve other query engines in the future.5. Summary
Fine-grained access control on the big data platform is being implemented. Of course, the platform vendors are dominated by Cloudera and Hortonworks. Cloudera focuses on the Sentry authorization system; on the one hand, Hortonwork relies on Control over open-sour
When we are in the process of downloading, the following figure
If our network is good, download success, as shown below.
However, we have interrupted the download process, we are not back to the download interface,
Instead, it enters the following interface:
How do we get cloudera-agent back?
Execute the following command:
sudo apt-get remove Avro-tools crunch flume-ng hadoop-hdfs
Tags: ODI HadoopThis article describes how to combine ODI with Hadoop. Before doing so, make sure you have the ODI software installed and build a Hadoop environment, or you can refer to my other blog posts to build the environment.1. Create a Directory[[emailprotected] ~]# hdfs dfs -mkdir -p /user/oracle/odi_home[[emailprotected] ~]# hdfs dfs -chown oracle:oinstall /user/oracle/odi_home[[emailprotected] ~]#
or download the Word document: http://download.csdn.net/download/xfg0218/9747346
about CDH and Cloudera Manager
CDH (Cloudera's distribution, including Apache Hadoop), is one of the many branches of Hadoop, built from Cloudera maintenance, based on the stable version of Apache Hadoop, and integrates many patches, Can be used directly in production environments.
Cloud
Turn from http://molisa.iteye.com/blog/1953390 I am mainly adjusting the time zone problem of hue according to this instructionsThere was a problem when using Cloudera hue:1. When using the Sqoop import function, the "Save Run" job does not commit properly due to configuration errors, and there is no prompt on the interface:
Sqoop shell with Hue-"Start job--jid * Submit some error prompts
And then go to/var/log/sqoop/and check the log.
1. Cloudera ManagerCloudera Manager is an end-to-end application that manages CDH.Role– Management– Monitoring– Diagnostics– Integration• architecture Server– Management Console server and application logic– Responsible for software installation, configuration, start-up and stop services– Management Service runs the clusterAgent– Installed on each host– Responsible for starting and stopping processes, configuring, monitoring hostsManagement Servi
I just started to play with Cloudera Manager 5.0.1 and a small fresh setup cluster. It has six datanodes with a total capacity of 16.84 TB, one Namenode and another node for the Cloudera Manager and other S Ervices. From start on, I is wondering how to start the HDFS balancer.
Short answer:
To run the balancer your need to add the balancer role to any node in you
A brief introduction to CDHEveryone often says CDH, whose full name is: Cloudera's distribution including Apache Hadoop, simply Cloudera's Hadoop platform, is encapsulated and reinforced on the basis of Apache native Hadoop components. What is there in CDH? Such as:So how does this CDH software install? Cloudera Company provides a set of software to install CDH, manage and maintain CDH components, called Cloudera
Configuration
After yum is configured, you can install it.
Prepare Parcels to install CDH5
Put the CHD5-related Parcel package in the/opt/cloudera/parcel-repo/directory of the master node (parcel-repo needs to be manually created ).
The related files are as follows:
CDH-5.1.3-1.cdh5.1.3.p0.12-el6.parcel
CDH-5.1.3-1.cdh5.1.3.p0.12-el6.parcel.sha1
Manifest. json
Finally, rename the CDH-5.1.3-1.cdh5.1.3.p0.12-el6.parcel.sha1 to CDH-5.1.3
name] [--list] Collection [--create name-s When the SOLR service starts for the first time, the/SOLR directory is created on HDFs, and the/SOLR node is created on the zookeeper, which is used to hold/SOLR-related configuration information under the Solrcloud node on the zookeeper.Since there is no collection on the Solrcloud, we first create a collection, named Collection1, to upload the configuration information to Collection1 before creating zookee
Recently engaged in the installation of Cloudera Manager, experienced a lot of frustrations, summed up:
Also referred to a number of other people's posts such as:
http://blog.csdn.net/a921122/article/details/51939692
Http://www.aboutyun.com/forum.php?mod=viewthreadtid=9086extra=page%3D1
http://www.aboutyun.com/forum.php?mod=viewthreadtid=10852highlight=%C0%EB%CF%DF%B0%B2%D7%B0Cloudera% 2BManager
The approximate method is feasible. System Environment4
configuration Authentication configuration
Hive default all users can make permission changes, configured to only administrators (such as admin) to modify permissionsUse hooks for identity interception, if the user is not admin and Operation Rights Management operation, reject, the code example is as follows:
When using client hive, the statements that are output to the console are displayed for easy debuggingWhen operating on hue, the output of logger will output the authorization configurat
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