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Hadoop cluster (CDH4) practice (0) PrefaceHadoop cluster (CDH4) Practice (1) Hadoop (HDFS) buildHadoop cluster (CDH4) Practice (2) Hbasezookeeper buildHadoop cluster (CDH4) Practice (3) Hive BuildHadoop cluster (CHD4) Practice (4) Oozie build
Hadoop cluster (CDH4) practice (0) Preface
During my t
High-availability Hadoop platform-Hadoop Scheduling for Oozie Workflow1. Overview
In the "high-availability Hadoop platform-Oozie Workflow" article, I will share with you how to integrate a single plug-in such as Oozie. Today, we
DescriptionTasks performed in Hadoop sometimes require multiple map/reduce jobs to be connected together in order to achieve the goal. In the Hadoop ecosystem,Oozie allows us to combine multiple map/reduce jobs into a single logical unit of work, To accomplish larger tasks. PrincipleOozie is a java Web application that runs in the Java servlet container- the Tomc
What is Azkaban? (a)Functional characteristics of Azkaban (II.)Architecture of the Azkaban (iii)Not much to say, directly on the dry goods!Http://www.cnblogs.com/zlslch/category/938837.htmlCurrently, there are two of the most popular Hadoop workflow engine schedulers Azkaban and Oozie on the market.Specifically, you can look further at my blog.Azkaban Concept Learning Series http://www.cnblogs.com/zlslch/ca
High-availability Hadoop platform-Oozie Workflow1. Overview
When developing and using Hadoop-related applications, we can directly use Crontab to schedule related applications without complicated services and few tasks. Today, we will introduce the system for unified management of various scheduling tasks. The following is the content directory shared today:
Co
-scm-agent# for a in {1..6}; Do ssh enc-bigdata0$a/opt/cm-5.8.0/etc/init.d/cloudera-scm-agent start; Done6. Problem: Cloudera-scm-agent failed to start: Unable to create the PidfileReason: Unable to create/opt/cm-5.8.0/run/cloudera-scm-agentWorkaround:# mkdir/opt/cm-5.8.0/run/cloudera-scm-agent# Chown-r Cloudera-scm:cloudera-scm/opt/cm-5.8.0/run/cloudera-scm-agent7. Access URL: http://IP:7180/(configuration CDH5.8.0)enc-bigdata0[1-6].enc.cn # #点击模式Note: It is important to modify the JDK home dir
Author Boris Lublinsky, Michael Segel , translator Surtani released on August 18, 2011 | Note:Qcon Global Software Development Conference (Beijing) April 2016 21-23rd, Learn more!
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Tasks performed in Hadoop sometimes require multiple map/reduce jobs to be connected together in order to achieve the goal. [1] in the
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With the exception information, you can guess that the configuration was not read when the task was executed, so the default 0.0.0.0:8030 address was used. In order to verify whether this is the cause, we can modify the log level of log4j in the oozie/conf directory for debugging.Then, by viewing and tracking the source code of Hadoop, the correctness of the conjectur
1. How does oozie view task logs?
The oozie job ID can be used to view detailed process information. The command is as follows:
Oozie job-Info0012077-180830142722522-oozie-hado-w
The process details are as follows:
Job ID:0012077-180830142722522-oozie-hado-w
Certificate ---
Related Run commandRun an app: Bin/oozie Job-oozie http://hadoop-1:11000/oozie-config examples/apps/map-reduce/ Job.properties-run Kill a jobbin/oozie job-oozie http://Hadoop-1:11000/
Oozie error when calling Hive to execute HQLJava.lang.IllegalArgumentException:java.net.URISyntaxException:Relative Path in absolute uri:file:./tmp/yarn/ 32f78598-6ef2-444b-b9b2-c4bbfb317038/hive_2016-07-07_00-46-43_542_5546892249492886535-1https://issues.apache.org/jira/browse/ OOZIE-23804.1.0 version Fix modification org.apache.oozie.action.hadoop.JavaActionExecutor location: core\src\main\java\org\apache
to increase the memory. We know that the way that Oozie implements hive action is to start a launcher (a job with only a map), which is the client, to submit the hive task, and the job that actually processes the data is the Mr Job that hive submits. In this error, launcher happened outofmemoryerror.
The workaround is also simple, add the following configuration to the Hive Action's config to increase the launcher memory:
In fact, the oozie.launche
pipelined execution model runs multiple data processing segments at the same time, passing data from one processing segment to the next when the data is available. Such a way would greatly reduce the end-to-end response time for various queries. At the same time, Presto designed a simple data storage abstraction layer to satisfy the use of SQL to query on different data storage systems. The storage connector currently supports HBase, Scribe, and custom developed systems in addition to HIVE/HDF
First, introduceOozie is a Hadoop-based workflow Scheduler that can submit different types of jobs programmatically through the Oozie Client, such as mapreduce jobs and spark jobs to the underlying computing platform, such as Cloudera Hadoop.Quartz is an open-source scheduling software that provides a variety of triggers and listeners for scheduling execution of tasksThe following uses Quartz +
idea that we can place our shared jar packages in one place, and then create a corresponding soft connection under/usr/hdp/current/hive-webhcat/share/hcatalog, for example, We put the jar uniformly under the/usr/lib/share-lib and then set up the soft connection: -u-s /usr/lib/share-lib/elasticsearch-hadoop-2.1.0.Beta4.jar /usr/hdp/current/hive-webhcat/share/hcatalog/elasticsearch-hadoop-2.1.0.Beta4.jarHow
third, the use of Oozie periodic automatic execution of ETL1. Oozie Introduction(1) What is Oozie?Oozie is a management Hadoop job, scalable, extensible, reliable workflow scheduling system, its workflow is composed of a series of actions made of a forward acyclic graph (DAG
More than half a year has been doing hive-related development work, and using Oozie as the engine for hive workflows to manage Hadoop tasks. Oozie's task flow includes: Croodinator, workflow. Workflow is used to describe the order in which tasks are executed, and croodinator is used to define Oozie scheduled tasks. Workflow defines two kinds of nodes: Control Flo
pig-0.9.2 installation
and configuration
Http://www.cnblogs.com/linjiqin/archive/2013/03/11/2954203.html
Pig Instance One
http://www.cnblogs.com/linjiqin/archive/2013/03/12/2956550.html
Hadoop Pig Learning Notes (i) various kinds of SQL implemented in pig
Blog Category: Hadoop Pig http://guoyunsky.iteye.com/blog/1317084
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