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Questions tagged [mapr]

MapR is a commercial data platform that offers a HDFS compatible distributed file system, a database that allows to store data in BigTable or JSON and a streaming platform for messaging. MapR leverages APIs from open source tools such as Hadoop, Kafka, HBase and provides a proprietary implementation written in C optimised for improved performance.

MapR is a complete enterprise-grade distribution for Apache Hadoop. The MapR Converged Data Platform has been engineered to improve Hadoop’s reliability, performance, and ease of use.

The MapR distribution provides a full Hadoop stack that includes the MapR File System (MapR-FS), the MapR-DB NoSQL database management system, MapR Streams, the MapR Control System (MCS) user interface, and a full family of Hadoop ecosystem projects. You can use MapR with Apache Hadoop, HDFS, and MapReduce APIs.

MapR supports the Hadoop 2.x architecture and YARN (Yet Another Resource Negotiator). Hadoop 2.x and YARN make up a resource management and scheduling framework that distributes resource management and job management duties.

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There are three MapR editions.

  • MapR Community Edition (formerly M3)
    • Free community edition.
  • MapR Enterprise Edition (formerly M5)
    • Adds high availability and data protection, including multi-node NFS.
  • MapR Enterprise Database Edition (formerly M7)
    • Adds structured table data natively in the storage layer and provides a flexible NoSQL database.

MapR can be installed on many versions of Red Hat Enterprise linux, CentOS, Ubuntu, Oracle Linux, and SUSE. A full matrix of supported Linux operating systems can be found here.

To install MapR the following requirements are needed.

  • A 64-bit CPU.
  • One of the above mentioned operating systems. (Red Hat Enterprise linux, CentOS, Ubuntu, Oracle Linux, or SUSE)
  • A minimum of 8GB of RAM.
  • At least one single unformatted disk.
  • A Resolvable hostname.
  • A common user on each server you wish to install MapR on.
  • Java 1.7.0 or higher.
  • Other
    • NTP, Syslog, PAM



Try MapR

Download the MapR Sandbox for VMware or Virtualbox for free.

OR

Install MapR on your own. Check to see if the installer is supported for your OS

You will have to meet the prerequisites for a successful installation

Get the mapr-setup sctipt from the MapR repository.

wget http://package.mapr.com/releases/installer/mapr-setup.sh

Run the mapr-setup script to start the installation.

bash ./mapr-setup.sh -y

Open the web UI with the following URL

https://<Installer node hostname/IPaddress>:9443

Following the prompts and you will be on your way to installing MapR.

There is also manual installation available. Full instructions can be viewed here.

Extensive documentation can be found on MapR's documentation site. http://maprdocs.mapr.com/home/



The Stackoverflow tag [mapr] can be used for questions about issues you have with the MapR platform.

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Unable to open url for flask application

I'm installed MapR Sandbox using virtual box. From putty I'have connected mapr sandbox which is installed in centos. In this system developed a flask application and ran it. In terminal it is showing Running on http://127.0.0.1:5000/ but when I…
Vijay
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Spark 2.1 on MAPR 5.0

I am running Spark 2.1 on Mapr 5.0 I am getting following exception while launching Spark on local mode My spark-default (Important configuration) spark.sql.hive.metastore.version 0.13.1 spark.sql.hive.metastore.jars …
user2553672
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Writing to Spark Avro failing

We have a MapR Cluster, on which this was running but now suddenly its stopped and even does not work on mapr demo cluster. We are running MapR 5.1 and Spark 1.6.1. from pyspark import SparkConf, SparkContext from pyspark import HiveContext from…
manmeet
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Where does MapR-DB fall in the CAP theorem?

Considering MapR-DB is a distributed database, it either belongs to the "CP" category or the "AP" category.
Fictional
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Accessing Hive, HDFS from mapr in local Spark

I have just installed the mapr 5.1 sandbox virtual machine running in virtualbox, in mode Bridge mode. What I am trying to do is accessing Hive and HDFS from a local Spark(same operation I did it with the HDP 2.4 sandbox) but without success. I…
dumitru
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Where does the verification code for gcloud auth login come from?

I am currently enrolled in ADM200, MapR Academy's free online learning program. I am using the "Set Up a Virtual Cluster" instructions, revised on 11/25/2015. I am using a Windows 8.1 computer, and am attempting to set up a virtual cluster on the…
johniccp
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Hue don't want create home directory for user - MapR

I use MapR and I want to create user from LDAP. I can create my users but Hue don't want to create associat folder, I have this message : "Error getting user info for current user, *** (error 500)" I try with local user but it's the same…
ehbr
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How to get the size of a mapr-db table?

I followed following steps for creating a mapr-db table: $ pwd /mapr/cluster1/user/project $ls bin src $ maprcli volume create -name project-tables-vol -path /user/project/tables \ -quota 100G -topology /data/rack1 $ ls bin src …
Shakti Garg
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How to ignore a file in Hadoop if an exception is thrown by the InputFormat RecordReader?

Is it possible in Hadoop to ignore a file and continue reading the others? I am not talking about an exception thrown when a line is corrupted. I am talking about when an exception is thrown by the InputFormat's RecordReader. I want my job to…
danilo
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HiveServer2 MapR java.sql.SQLException: Error while compiling statement: FAILED: SemanticException No valid privileges

Our team just upgraded to HiveServer2 (on MapR) with security. I can log into the DB via beeline fine and do select statements: beeline> !connect jdbc:hive2:// Enter username for djbc:hive2://: Enter password for jdbc:hive2://:…
Matthew Moisen
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Can I use cluster replication for Hbase migration between two different clusters?

I am planning to migrate between two different clusters where i am required to copy the Hbase table from old cluster to the new cluster, can cluster replication mechanism which is widely used for backing up data be used for the copying Hbase table…
darth_vader99
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MapR oozie sqoop error; Main class [org.apache.oozie.action.hadoop.SqoopMain], exit code [1]

I'm repeatedly getting this error when I submit a sqoop job using oozie on MapR. Details below. I even copied the mysql jar file to the share/lib/sqoop directory, with no result. Could you please help? Command: /opt/mapr/oozie/oozie-4.0.1/bin/oozie…
zack0438
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Spark shell error : ERROR SparkDeploySchedulerBackend: Asked to remove non-existent executor 11

Whenever I start the spark-shell on mapr Sandbox I keep on getting this error ERROR SparkDeploySchedulerBackend: Asked to remove non-existent executor 11 Please help me to solve this error.
Mayank
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Apache Drill in distributed Mode

I started exploring drill for our requirement to run SQL-on-semi structured data. I have setup a 4node drill cluster with zookeeper. Have few questions on how it actually works, When I run Drill in distributed mode, using dfs (local file system)…
user3809780
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configure Druid to connect to Zookeeper on port 5181

I'm running a MapR cluster and want to do some timeseries analysis with Druid. MapR uses a non-standard port for Zookeeper (port 5181 instead of the conventional port 2181). When I start the Druid coordinator service, it attempts to connect on the…
Alex Woolford
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