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If you’re looking to get started with using Apache Phoenix, the open source SQL skin for HBase, the first thing you’ll want to do is install it. This guide will show you how to do that on the Hortonworks virtual sandbox. If you’re running your setup on a machine that isn’t the Hortonworks sandbox, the over on the Phoenix website should help. Hortonworks also has an for both unsecure and secure hadoop clusters. In this guide we’ll be setting up Phoenix on an unsecure cluster (sandbox). What is Apache Phoenix? Before we start, let’s talk briefly about what Phoenix is and what it can do for you.
Installing Hortonworks Sandbox – Fusion on Mac Getting Ready to install on a Mac using VMware Fusion Use this section to prepare for your installation. Prerequisites To use the Hortonworks Sandbox on a Mac you must have the following resources available to you: • Hosts: o A 64-bit machine with a chip that supports virtualization.
As previously mentioned, Phoenix is an open source SQL skin for HBase. This means that it takes your SQL queries and transforms them into a series of HBase scans.
The transformations are all done under the hood. For the most part, you can run SQL queries over HBase as if you were merely using a relational database like MySQL or SQLite. What are some use cases for Phoenix? Phoenix can be used for a few different use cases: • At SiftScience, they use Phoenix for ad-hoc queries and exposing data insights. • At Alibaba, they use Phoenix for queries where there is a large dataset with a relatively small result (10,000 records or so), or for complicated queries over large dataset with a large result (millions of records). • At Ebay, they use Phoenix for Path or Flow analysis, as well as for real time data trends. To see more use cases, go.
Where to learn more If you’re inclined to learn more about Phoenix before we get started, check out the, learn about (a lot), or simply check out the. Installing Phoenix Ready to get started? We’re going to be using the open-source, package management utility yum (Yellowdog Updater, Modified) to install Phoenix. To start the installation run: yum install phoenix Possible installation errors (and their fixes) There’s a good chance that code will fail if you haven’t used yum before. If it fails with the error message Couldn’t resolve host mirrorlist.centos.org, the issue most likely stems from your network adapter.
Check your network adapter settings: Machine > Settings > Network. You should have a network adapter enabled that is attached to NAT. Make sure no other network adapters are enabled. If you don’t have a NAT adapter enabled, power off your machine.
Once it’s powered off you can return to the same Machine > Settings > Network menu to add or enable a NAT adapter. The default settings should be fine: If you receive the message Error: Cannot retrieve metalink for respository: epel, you will have to run this code in your VM: sudo sed -i 's/mirrorlist=https/mirrorlist=http/' /etc/yum.repos.d/epel.repo It will update yum’s repository to use http instead of https.
Installing Phoenix with Yum With the above fixes in place, you should be ready to install Phoenix with yum. Run this code: yum install phoenix Once the installation finishes, find your Phoenix core jar file. For me it was located at /usr/hdp/2.3.0.0-2557/phoenix/lib/phoenix-core-4.4.0.2.3.0.0-2557.jar. Link the Phoenix core jar file to the HBase Master and Region servers. Here was the code I used to link it: ln -sf /usr/hdp/2.3.0.0-2557/phoenix/lib/phoenix-core-4.4.0.2.3.0.0-2557.jar /usr/hdp/2.3.0.0-2557/hbase/lib/phoenix.jar Change the version numbers if you have different versions of hadoop (hdp) or phoenix. Edit the hbase-site.xml The next step is editing the hbase-site.xml. Run this: vi /usr/hdp/2.3.0.0-2557/etc/hbase/conf.dist/hbase-site.xml Again, change version numbers in that code as necessary.
Now that you’re in vi, a linux text editor, hit i to change from command mode to insert mode. Insert mode will let you make changes to the text in the file, while command mode lets you cause actions that will be taken on the file. Place this code between the two configuration tags: hbase.defaults.for.version.skip true hbase.regionserver.wal.codec org.apache.hadoop.hbase.regionserver.wal.IndexedWALEditCodec The file should look like this when you’re done. Notice that ‘:wq’ will allow you to save the file and exit Save the file by pressing ‘ESC’ to change from Insert Mode to Command mode, then hit ‘:wq’ to save and quit. Start HBase If HBase isn’t running yet, you need to start it. Similarly, if HBase is already running, you need to restart it. Log into Ambari in your browser at 127.0.0.1:8080 with username/password admin/admin.
My Passport 1 TB sometime work, sometime cannot even detect. When I run Drive utilities test, SMART test pass, but quick self drive test failed and complete drive test also failed. Anyone help correct the problem? Format WD My Passport for Mac 10 Quick Steps These instructions are for the release of Mac OS Sierra. For earlier releases of the Mac OS the instructions are the same except the screens may look slightly different. The quick drive test checks the drive for major performance problems. The result of a quick drive test is a pass-or-fail evaluation of the drive's condition. Complete Drive Test: It is the most comprehensive drive diagnostic. When running WD Drive Utilities - Complete Drive Test, I get a message that the test Failed. What does this mean and what should I (or could I) do about it? This is with a My Passport for Mac, using Apple OS 10.12 (Sierra). How to install wd passport. A 'Complete Drive Test' in Mac OSX fails on a WD Passport drive Answer ID 9796 This article explains why running a 'Complete Drive Test' on a Mac computer fails if performed on a WD Passport drive.*END.