MapR: All content tagged as MapR in NoSQL databases and polyglot persistence
A couple of links covering various aspects of this question:
- Quora thread covering this subject
- Joe Stein’s Hadoop distribution bake-off and my experience with Cloudera and MapR
- How I’d choose a Hadoop distribution
- MapR claims title as de facto standard for Hadoop
If you have other good references answering the question of what Hadoop distribution to choose please leave a comment.
Original title and link: Cloudera or MapR for Hadoop Distribution? ( ©myNoSQL)
Another very interesting news for the Hadoop space, this time coming from Amazon and MapR announcing support for the MapR Hadoop distribution on Amazon Elastic MapReduce:
MapR introduces enterprise-focused features for Hadoop such as high availability, data snapshotting, cluster mirroring across AZs, and NFS mounts. Combined with Amazon Elastic MapReduce’s managed Hadoop environment, seamless integration with other AWS services, and hourly pricing with no upfront fees or long-term commitments, Amazon EMR with the MapR Distribution for Hadoop offers customers a powerful tool for generating insights from their data.
Following the logic of the Amazon Relational Database Services which started with MySQL, the most popular and open source database and then added support for the commercial, but also very popular Oracle and SQL Server, what does this announcement tell us? It’s either that Amazon has got a lot of requests for MapR or that some very big AWS customers have mentioned MapR in their talks with Amazon. I go with the second option.
Original title and link: MapR Hadoop Distribution on Amazon Elastic MapReduce ( ©myNoSQL)
Found the following bits in a post on The Register by Timothy Prickett Morgan:
While Cloudera and MapR are charging $4,000 per node for their enterprise-class Hadoop distributions (including their proprietary extensions and tech support), Hortonworks doesn’t have any proprietary extensions and is living off of the support contracts for the HDP 1.0 stack. […] Hortonworks is not providing its full list price, but for a starter ten-node cluster, you can get a standard support contract for $12,000 per year.
Hortonworks’s pricing looks a bit aggressive, but this could be explained by the fact that Hortonworks Data Platform 1.0 was made available only this week.
For running Hadoop in the cloud, there’s also Amazon Elastic MapReduce whose pricing was always clear. And Amazon has recently announced support for MapR Hadoop distribution on Elastic MapReduce.
Original title and link: Pricing for Hadoop Support: Cloudera, Hortonworks, MapR ( ©myNoSQL)
As I’m slowly recovering after a severe poisoning that I initially ignored but finally put me to bed for almost a week, I’m going to post some of the most interesting articles I’ve read while resting.
Hadoop Namenode’s single point of failure has always been mentioned as one of the weaknesses of Hadoop and also as a differentiator of other Hadoop-based commercial offerings. But now the Namenode HA branch was merged into trunk and while it will take a couple of cicles to complete the tests, this will become soon part of the Hadoop distribution.
Significant enhancements were completed to make HOT Failover work:
- Configuration changes for HA
- Notion of active and standby states were added to the Namenode
- Client-side redirection
- Standby processing journal from Active
- Dual block reports to Active and Standby
In a follow up post to Gartner’s article Apache Hadoop 1.0 Doesn’t Clear Up Trunks and Branches Questions. Do Distributions?, the advantage of using custom distributions will slowly vanish and the open source version will be the one you’ll want to have in production.
Original title and link: Hadoop Namenode High Availability Merged to HDFS Trunk ( ©myNoSQL)
My list of 8 most interesting companies for the future of Hadoop didn’t try to include anyone having a product with the Hadoop word in it. But the list from InformationWeek does. To save you 15 clicks, here’s their list:
- Amazon Elastic MapReduce
- EMC (with EMC Greenplum Unified Analytics Platform and EMC Data Computing Appliance)
- IBM (InfoSphere BigInsights)
- Informatica (for HParser)
Original title and link: 12 Hadoop Vendors to Watch in 2012 ( ©myNoSQL)
Here’s the abstract of the patent filing submitted by MapR’s for a Map-Reduce Ready Distributed File System:
A map-reduce compatible disitrubuted file system that consists of successive component layers that each provide the basis on which the next layer is built provides transactional read-write -update semantics with file chunk replication and huge file-create rates. A primitive storage layer (storage pools) knits together raw block stores and provides a storage mechanism for containers and transaction logs. Storage pools are manipulated by individual file servers. Containers provide the fundamental basis for data replication, relocation, and transactional updates. A container location database allows containers to be found among all file servers, as well as defining precedence among replicas of containers to organize transactional updates of container contents. Volumes facilitate control of data placement, creation of snapshots and mirrors, and retention of a variety of control and policy information. Key-value stores relate keys to data for such purposes as directories, container location maps, and offset maps in compressed files.
You can get the complete PDF from here.
Original title and link: MapR’s Map-Reduce Ready Disitributed File System Patent Filing ( ©myNoSQL)
Just a quick recap:
- Cloudera: Oracle, Dell, NetApp
- Hortonworks: Microsoft
- MapR: EMC (integration with Greenplum HD)
Amazon doesn’t partner with anyone for their Amazon Elastic Map Reduce. And IBM is walking alone with the software-only InfoSphere BigInsights.
Original title and link: Partnerships in the Hadoop Market ( ©myNoSQL)