This is the manual for WebHCat, previously known as Templeton. WebHCat is the REST API for HCatalog, a table and storage management layer for Hadoop. If you are looking for a Hive GUI instead of an API, see Hive Web Interface removed in release 2.2.0. For example, to avoid the installation of Pig and Hive everywhere on the cluster, the server gathers a version of Pig or Hive from the Hadoop distributed cache whenever those resources are invoked. After placing the following components into HDFS please update the site configuration as required for each. Configuration Files. The configuration for WebHCat Templeton merges the normal Hadoop configuration with the WebHCat-specific variables. Because WebHCat is designed to connect services that are not normally connected, the configuration is more complex than might be desirable. Step 1: Enable WebHCat By default, Cloudera cluster created from Azure Marketplace doesn't have WebHCat enabled. To enable it, go to Cloudera Manager, select Hive, and Add Role Instances: You can see WebHCat server doesn't have a host, so click Select Hosts: Follow the wizard to select a host, and start the WebHCat server.
Managing the WebHCat Server. Running Jobs on the WebHCat Server. Hive and Tez Integration. You can use Tez, instead of MapReduce, for generic data processing tasks. Tez significantly increases the processing speed. Tez, working with Hive, provides smaller latency for interactive queries and higher throughput for batch queries. Managing Hive. Alert: Welcome to the Unified Cloudera Community. Former HCC members be sure to read and learn how to activate your account here.
Expert support for Hive. Trained by its creators, Cloudera has Hive experts available across the globe ready to deliver world-class support 24/7. With more experience across more production customers, for more use cases, Cloudera is the leader in Hive support so you can focus on results. Running Hive queries via webhcat REST API on CDH4.2; Vitaliy. Apr 9,. I have a CDH4.2 cluster setup with basic/non-HA MRv1 no YARN and I am trying to use webhcatalog to run Hive queries using REST API. There are a couple things I had to do after "yum install webhcat-server": - Add this to webhcat-site.xml defaults seem to point to wrong. We recently decided to enable GC logging for three Apache Hive-related servers: HiveServer2, Hive MetaStore server, and WebHCat server. This is on a number of clusters exact version varies as a aid to looking into Hive-related memory and garbage collection problems. Restart Hive Metastore Server/HiveServer2. Configuring HCatalog and WebHCat HCatalog. Starting in Hive release 0.11.0, HCatalog is installed and configured with Hive. The HCatalog server is the same as the Hive metastore. See Hive Metastore Administration for metastore configuration properties.
03/07/2015 · Connect Cloudera to Azure ML Hive Reader. Enable WebHCat. By default, Cloudera cluster created from Azure Marketplace doesn't have WebHCat enabled. To enable it, go to Cloudera Manager, select Hive, and Add Role Instances: You can see WebHCat server doesn't have a host, so click Select Hosts: Follow the wizard to select a host. If the Cloudera Manager Server and Agent run on the same host, install the Cloudera Manager Server first and then add the python-psycopg2 repository or package. The WebHCat service for REST access to Hive functionality runs as the hive user. HttpFS CDH 4, CDH 5. The Hadoop Connection Manager Editor dialog box opens. To configure related Hadoop cluster information, choose the WebHCat or WebHDFS tab in the left pane. If you enable the WebHCat option to invoke a Hive or Pig job on Hadoop, do the following: For WebHCat Host, enter the server that hosts the WebHCat service.
Cloudera Manager Server. The WebHCat service for REST access to Hive functionality runs as the hive user. HttpFS CDH 4, CDH 5 httpfs: httpfs: The HttpFS service runs as this user. See HttpFS Security Configuration for instructions on how to generate the merged httpfs-http.keytab file. Note: this artifact it located at Cloudera Rel repository repository./content/repositories/releases/. See templeton.exec.timeout property","exitcode":143 I don't know why it complains about a missing log directory only for foo_bar table but successfully returns the metadata regarding Person. BTW, I can go into the hive console and do a select count query on both Person and foo_bar. Top 50 Apache Hive Interview Questions and Answers 2016 by Knowledge Powerhouse: Apache Hive Query Language in 2 Days: Jump Start Guide Jump Start In 2 Days Series Book 1 2016 by Pak Kwan.
31/12/2019 · As of Hive 0.13-1504 and Hive 1.0-1504, WebHCat is managed by Warden. Therefore, you can start and stop WebHCat using maprcli and the MapR Control System MCS. Applies to versions prior to Hive. Hive and WebHCat Integration. Configuring the WebHCat Server; Managing the WebHCat Server. Running Jobs on the WebHCat Server. Hive 2.1 and Tez 0.8. Managing Hive Services; Connecting to Hive; Enabling High Availability; Hive 2.1 API. Troubleshooting Hive; HttpFS; Hue; Impala; Mahout; MapR Streams Clients and Tools. Myriad. Oozie; Pig. The following table lists the default ports used by the WebHCat service.
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