Cloudera

Hadoop Capacity Scheduler and Spark

╄→гoц情女王★ 提交于 2021-02-20 04:22:05
问题 If I define CapacityScheduler Queues in yarn as explained here http://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html how do I make spark use this? I want to run spark jobs... but they should not take up all the cluster but instead execute on a CapacityScheduler which has a fixed set of resources allocated to it. Is that possible ... specifically on the cloudera platform (given that spark on cloudera runs on yarn?). 回答1: You should configure the

why i am getting this error “Installation failed. Failed to receive heartbeat from agent.” in cloudera installtion

倖福魔咒の 提交于 2021-02-19 06:53:06
问题 I am installing cloudera manager on local machine. When trying to add new host getting following error Installation failed. Failed to receive heartbeat from agent. Ensure that the host's hostname is configured properly. Ensure that port 7182 is accessible on the Cloudera Manager server (check firewall rules). Ensure that ports 9000 and 9001 are free on the host being added. Check agent logs in /var/log/cloudera-scm-agent/ on the host being added (some of the logs can be found in the

CDH 大数据平台搭建

我与影子孤独终老i 提交于 2021-02-18 12:31:12
一、概述 Cloudera版本(Cloudera’s Distribution Including Apache Hadoop,简称“CDH”),基于Web的用户界面,支持大多数Hadoop组件,包括HDFS、MapReduce、Hive、Pig、 Hbase、Zookeeper、Sqoop,简化了大数据平台的安装、使用难度。 二、安装部署 | 序号 | IP地址 | 主机名 |系统版本| | -------- | -------- | -------- | | 1 | 172.20.2.222 | cm-server |centos7.3 | 2 | 172.20.2.203 | hadoop-1 |centos7.3 | 3 | 172.20.2.204 | hadoop-2 |centos7.3 | 4 | 172.20.2.205 | hadoop-3 |centos7.3 2.2.1 基础环境部署 a.修改主机名配置hosts systemctl stop firewalld hostnamectl set-hostname cm-server #更改个主机名 sed -i 's/SELINUX=enforcing/SELINUX=disable/g' /etc/selinux/config setenforce 0 cat >>/etc/hosts<<EOF

Installing cloudera impala without cloudera manager

倾然丶 夕夏残阳落幕 提交于 2021-02-18 06:59:59
问题 Kindly provide the link for installing the imapala in ubuntu without cloudera manager. Couldn't able to install with official link. Unable to locate package impala using these queries : sudo apt-get install impala # Binaries for daemons sudo apt-get install impala-server # Service start/stop script sudo apt-get install impala-state-store # Service start/stop script 回答1: First you need to get the list of packages and store it in /etc/apt/sources.list.d/ , then update the packages, then you

HBase数据同步到ElasticSearch的方案

☆樱花仙子☆ 提交于 2021-02-18 02:18:19
<div id="article_content" class="article_content"> <p><br> </p> <h3>ElasticSearch的River机制</h3> <p>ElasticSearch自身提供了一个River机制,用于同步数据。</p> <p>这里能够找到官方眼下推荐的River:</p> <p><a target="_blank" href="http://www.elasticsearch.org/guide/en/elasticsearch/rivers/current/">http://www.elasticsearch.org/guide/en/elasticsearch/rivers/current/</a><br> </p> <p>可是官方没有提供HBase的River。</p> <p>事实上ES的River很easy,就是一个用户打包好的jar包,ES负责找到一个node,并启动这个River。假设node失效了。会自己主动找另外一个node来启动这个River。</p><p></p> <p></p> <pre code_snippet_id="520284" snippet_file_name="blog_20141115_1_5215483" name="code" class="java">public interface

Spark-HBase - GCP template (1/3) - How to locally package the Hortonworks connector?

此生再无相见时 提交于 2021-02-17 06:30:36
问题 I'm trying to test the Spark-HBase connector in the GCP context and tried to follow [1], which asks to locally package the connector [2] using Maven (I tried Maven 3.6.3) for Spark 2.4, and leads to following issue. Error "branch-2.4": [ERROR] Failed to execute goal net.alchim31.maven:scala-maven-plugin:3.2.2:compile (scala-compile-first) on project shc-core: Execution scala-compile-first of goal net.alchim31.maven:scala-maven-plugin:3.2.2:compile failed.: NullPointerException -> [Help 1]

为什么大公司要开源自己的技术?

[亡魂溺海] 提交于 2021-02-11 20:57:00
大约一个月前,谷歌公开了用于Big Transfer(BiT)的预训练模型和微调代码——Big Transfer是一种深度学习的计算机视觉模型。根据谷歌的说法,Big Transfer将允许任何人在相应的任务上达到最优表现,即使每个类只有少量的标签图片。这仅仅是这家科技巨头免费向公众开放其专有产品的一个例子。要知道,发布强大的免费开源软件已经成为科技界的常见事件,并引发了这样一个问题:大型科技公司这么做得到了什么回报? 在90年代后期,当Open Source Initiative出现时,将源代码公开的想法被认为是一个坏策略,因为专有软件是标准,公司会尽一切努力保护软件。到2020年,开源的概念发生了巨大的变化,现在已经成为主流。 如今有许多开源技术公司,其中一些公司的年收入已经超过1亿美元(甚至10亿美元),包括红帽、MongoDB、Cloudera、MuleSoft、Hashicorp、Databricks(Spark)和Confluent(Kafka)。 除了上述科技公司高调收购和投资开源项目外,谷歌和Facebook等科技巨头也把开源放到了难以置信的重要位置,因为开源对于收集新产品的创新和建立一个庞大的开发者社区非常重要。例如,Flutter vs React Native、Tensorflow vs PyTorch、Kubernetes等

Is it possible to compress json in hive external table?

冷暖自知 提交于 2021-02-10 13:33:16
问题 I want to know how to compress json data in hive external table. How can it be done? I have created external table like this: CREATE EXTERNAL TABLE tweets ( id BIGINT,created_at STRING,source STRING,favorited BOOLEAN )ROW FORMAT SERDE "com.cloudera.hive.serde.JSONSerDe" LOCATION "/user/cloudera/tweets"; and I had set the compression properties set mapred.output.compress=true; set hive.exec.compress.output=true; set mapred.output.compression.codec=org.apache.hadoop.io.compress.GzipCodec; set

金三银四,数据分析跳槽加薪需要真本事

谁说胖子不能爱 提交于 2021-02-10 12:02:28
数据分析师岗位前景大好,很多人光靠这个当兼职,都能月收过万,所以 学习数据分析肯定是“赶早不赶晚”。 我用我的一段亲身经历告诉大家,“ 跳槽大厂数分岗位,到底需要准备什么? ” 之前我简历里带了一个 数据分析实战经验 ,项目不大不小,本来是想用来美化简历,最后成了让我 斩获大厂offer的关键 。 相比之下我朋友就没那么幸运,他信心满满准备了3个自以为很全面的demo,没想到在初面就下车了,他还跟我诉苦,想想之前花了两个月时间来准备,最后成了一场空。 (这就好比谈恋爱,你谈过3个女朋友,但每个都是不适合自己,最后时间和经历都耗费了,却只能眼睁睁看着别人幸福的步入婚姻殿堂) 后来我给他找了一套 自学数据分析和跳槽大厂数分岗位必备的直播课 —— 网易云课堂推出的 《3天 数据分析实战 训 练营》 在这三节课里,网易特邀数据架构讲师——“证书狂魔”Mars老师,通过直播 现场教学和实战的同时,开放互动参与学习。 (深度学习DeepLearning.ai实验室认证) (微软/甲骨文/Cloudera等公司颁发的数据分析证书) 不仅所有的问题都有解答,而且还能 跟随直播参与实战 ,从而锻炼量化交易能力,快速学习数据可视化,迅速提升数据分析能力。带你少走弯路,真正实现从入门到大神! 3天数据分析量化实战营直播主题 Day1 20:00 & 数据可视化入门: 60分钟

Impala: Show tables like query

南楼画角 提交于 2021-02-07 14:45:47
问题 I am working with Impala and fetching the list of tables from the database with some pattern like below. Assume i have a Database bank , and tables under this database are like below. cust_profile cust_quarter1_transaction cust_quarter2_transaction product_cust_xyz .... .... etc Now i am filtering like show tables in bank like '*cust*' It is returning the expected results like, which are the tables has a word cust in its name. Now my requirement is i want all the tables which will have cust