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TimothySpann
Platinum ⭐️⭐️⭐️
TimothySpann
Platinum ⭐️⭐️⭐️
May 27, 2016

Alluxio on HDP 2.4 - In Memory HDFS

  • October 5, 2026 at 9:39 AM
  • 2 replies
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Alluxio is available to install on HDP and works with your existing HDFS.

http://www.alluxio.org/documentation/en/Configuring-Alluxio-with-HDFS.html

http://www.alluxio.com/2016/04/getting-started-with-alluxio-and-spark/

To use on HDP, you need to edit the /opt/alluxio-1.0.1/conf/alluxio-env.sh after you create it and change the port from 9000 to 8020.

You can also override at the command line:

export
ALLUXIO_UNDERFS_ADDRESS=hdfs://localhost:8020

To Setup Alluxio. First download it.

bin/alluxio format[root@sandbox
alluxio-1.0.1]# bin/alluxio formatConnecting to
localhost as root...Warning: Permanently
added 'localhost' (RSA) to the list of known hosts.Formatting Alluxio
Worker @ sandbox.hortonworks.comConnection to
localhost closed.Formatting Alluxio
Master @ localhost[root@sandbox
alluxio-1.0.1]# bin/alluxio-start.sh local
Killed 0 processes
on sandbox.hortonworks.comKilled 0 processes
on sandbox.hortonworks.comConnecting to
localhost as root...Killed 0 processes
on sandbox.hortonworks.comConnection to
localhost closed.Formatting RamFS:
/mnt/ramdisk (1gb)Starting master @
localhost. Logging to /opt/alluxio-1.0.1/logsStarting worker @
sandbox.hortonworks.com. Logging to /opt/alluxio-1.0.1/logs

==>
/opt/alluxio-1.0.1/logs/user.log <==2016-05-25
17:22:45,622 INFO logger.type
(Format.java:formatFolder) - Formatting
JOURNAL_FOLDER:/opt/alluxio-1.0.1/journal/2016-05-25
17:22:45,656 INFO logger.type
(Format.java:formatFolder) - Formatting
BlockMaster_JOURNAL_FOLDER:/opt/alluxio-1.0.1/journal/BlockMaster2016-05-25
17:22:45,657 INFO logger.type
(Format.java:formatFolder) - Formatting
FileSystemMaster_JOURNAL_FOLDER:/opt/alluxio-1.0.1/journal/FileSystemMaster2016-05-25
17:22:45,659 INFO logger.type
(Format.java:formatFolder) - Formatting
LineageMaster_JOURNAL_FOLDER:/opt/alluxio-1.0.1/journal/LineageMaster

==>
/opt/alluxio-1.0.1/logs/worker.log <==2016-05-26
20:46:19,189 INFO
server.AbstractConnector (AbstractConnector.java:doStart) - Started
SelectChannelConnector@0.0.0.0:300002016-05-26
20:46:19,189 INFO logger.type
(UIWebServer.java:startWebServer) - Alluxio Worker Web service started @
0.0.0.0/0.0.0.0:300002016-05-26
20:46:19,191 INFO logger.type
(AbstractClient.java:connect) - Alluxio client (version 1.0.1) is trying to
connect with BlockMasterWorker master @ sandbox.hortonworks.com/10.0.2.15:199982016-05-26
20:46:19,199 INFO logger.type
(AbstractClient.java:connect) - Client registered with BlockMasterWorker master
@ sandbox.hortonworks.com/10.0.2.15:199982016-05-26
20:46:19,312 INFO logger.type
(AlluxioWorker.java:start) - Started worker with id 12016-05-26
20:46:19,312 INFO logger.type
(AlluxioWorker.java:start) - Alluxio Worker version 1.0.1 started @
sandbox.hortonworks.com/10.0.2.15:299982016-05-26
20:46:20,311 INFO logger.type
(AbstractClient.java:connect) - Alluxio client (version 1.0.1) is trying to
connect with FileSystemMasterWorker master @
sandbox.hortonworks.com/10.0.2.15:199982016-05-26
20:46:20,311 INFO logger.type
(AbstractClient.java:connect) - Client registered with FileSystemMasterWorker
master @ sandbox.hortonworks.com/10.0.2.15:199982016-05-26
20:46:20,313 INFO logger.type
(AbstractClient.java:connect) - Alluxio client (version 1.0.1) is trying to
connect with FileSystemMasterWorker master @
sandbox.hortonworks.com/10.0.2.15:199982016-05-26
20:46:20,314 INFO logger.type
(AbstractClient.java:connect) - Client registered with FileSystemMasterWorker
master @ sandbox.hortonworks.com/10.0.2.15:19998

To validate your install, run the tests:

./bin/alluxio runTests
All tests passed

You can view from the command line ( http://www.alluxio.org/documentation/en/Command-Line-Interface.html )

[root@sandbox
alluxio-1.0.1]# ./bin/alluxio fs ls /default_tests_files
80.00B 05-26-2016 20:49:01:243 In Memory
/default_tests_files/BasicFile_CACHE_PROMOTE_MUST_CACHE
84.00B 05-26-2016 20:49:02:877 In Memory
/default_tests_files/BasicNonByteBuffer_CACHE_PROMOTE_MUST_CACHE
80.00B 05-26-2016 20:49:04:432 In Memory
/default_tests_files/BasicFile_CACHE_PROMOTE_CACHE_THROUGH
84.00B 05-26-2016 20:49:08:236 In Memory
/default_tests_files/BasicNonByteBuffer_CACHE_PROMOTE_CACHE_THROUGH
80.00B 05-26-2016 20:49:12:342 In Memory
/default_tests_files/BasicFile_CACHE_PROMOTE_THROUGH
84.00B 05-26-2016 20:49:16:392 In Memory
/default_tests_files/BasicNonByteBuffer_CACHE_PROMOTE_THROUGH
80.00B 05-26-2016 20:49:20:851 In Memory
/default_tests_files/BasicFile_CACHE_PROMOTE_ASYNC_THROUGH
84.00B 05-26-2016 20:49:23:190 In Memory
/default_tests_files/BasicNonByteBuffer_CACHE_PROMOTE_ASYNC_THROUGH
80.00B 05-26-2016 20:49:25:152 In Memory
/default_tests_files/BasicFile_CACHE_MUST_CACHE
84.00B 05-26-2016 20:49:26:975 In Memory
/default_tests_files/BasicNonByteBuffer_CACHE_MUST_CACHE
80.00B 05-26-2016 20:49:28:595 In Memory
/default_tests_files/BasicFile_CACHE_CACHE_THROUGH
84.00B 05-26-2016 20:49:32:375 In Memory
/default_tests_files/BasicNonByteBuffer_CACHE_CACHE_THROUGH
80.00B 05-26-2016 20:49:36:505 In Memory
/default_tests_files/BasicFile_CACHE_THROUGH
84.00B 05-26-2016 20:49:40:823 In Memory
/default_tests_files/BasicNonByteBuffer_CACHE_THROUGH
80.00B 05-26-2016 20:49:44:827 In Memory
/default_tests_files/BasicFile_CACHE_ASYNC_THROUGH
84.00B 05-26-2016 20:49:47:248 In Memory
/default_tests_files/BasicNonByteBuffer_CACHE_ASYNC_THROUGH
80.00B 05-26-2016 20:49:49:614 In Memory
/default_tests_files/BasicFile_NO_CACHE_MUST_CACHE
84.00B 05-26-2016 20:49:52:384 In Memory
/default_tests_files/BasicNonByteBuffer_NO_CACHE_MUST_CACHE
80.00B 05-26-2016 20:49:55:107 In Memory
/default_tests_files/BasicFile_NO_CACHE_CACHE_THROUGH
84.00B 05-26-2016 20:49:59:675 In Memory
/default_tests_files/BasicNonByteBuffer_NO_CACHE_CACHE_THROUGH
80.00B 05-26-2016 20:50:03:639 Not In Memory
/default_tests_files/BasicFile_NO_CACHE_THROUGH
84.00B 05-26-2016 20:50:07:425 Not In Memory
/default_tests_files/BasicNonByteBuffer_NO_CACHE_THROUGH
80.00B 05-26-2016 20:50:11:384 In Memory
/default_tests_files/BasicFile_NO_CACHE_ASYNC_THROUGH
84.00B 05-26-2016 20:50:13:310 In Memory
/default_tests_files/BasicNonByteBuffer_NO_CACHE_ASYNC_THROUGH

You can access these files from Spark and Flink. Alluxio has configurable storage tiers (memory, HHD, SSD) and can sit on top of HDFS.

To Browse The Alluxio File System and Also View Metrics

http://localhost:19999/home

4590-alluxio1.png

4591-alluxio2.png

4592-alluxio3.png

4593-alluxio4.png

4594-alluxio6.png

4595-alluxio8.png

4596-alluxio9.png

4597-alluxio10.png

References:

Presentation on Alluxio (formerely Tachyon)

http://www.slideshare.net/TachyonNexus/tachyon-presentation-at-ampcamp-6-november-2015

Unified Name Space

http://www.alluxio.com/2016/04/unified-namespace-allowing-applications-to-access-data-anywhere/

Getting Started with Alluxio and Spark

http://www.alluxio.com/2016/04/getting-started-with-alluxio-and-spark/

    2 replies

    dmcguir2
    dmcguir2
    Silver ⭐️
    June 13, 2016

    Great article - did you happen to see if this integrates with Apache Ranger ?

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    HorizonNet
    HorizonNet
    Silver ⭐️⭐️
    June 30, 2016

    There's currently no native integration with Ranger. Nevertheless, Alluxio provides a REST API. You could setup Alluxio as a Knox service and use the Ranger Knox plugin. Or even simpler, if you use HDFS as your UnderFS the HDFS plugin could do the work (haven't tried it yet). Seems to be an interesting feature to me. You could file a JIRA for it in Alluxio or Ranger.

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