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PETER.EDIKE
Hello Everyone,   I am trying to implement a Stream-Stream join Use Case on a MapR Cluster 6.0.1 MEP 5.0 and I keep getting the following exception   warning: there was one deprecation warning; re-run with -deprecation for details org.apache.spark.sql.AnalysisException: Inner join between two streaming DataFrames/Datasets is not supported;; Join… (Show more)
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Rahul Panda
Hello Dear Members I would like to know the procedure for setting a deadline for a snapshot.
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SubashKunjupillai
Hi,   We have MapR 5.2.1 installed in 20 odd different customer sites. Since the effect of GDPR, we are in the process of enabling security at mapr layer and looking at other vulnerabilities within our product. During that course we found that we have been creating 'mapr' user for which sudo permission is being provided during installation (Not… (Show more)
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Rahul Panda
Hello Members   I would like to downgrade my MapR v6 running on a production cluster to MapR v5. As per the support matrix, I am currently having installed MEP v5.0 and MapR 6.0.1 which has to be downgraded to MEP v3.0.3 and MapR 5.1.2. Please let me know the procedure that can be followed, and the risks associated with this process.… (Show more)
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kamal
We have AD group names with spaces in the group name such as "domain users". MapR access is provided by ACL and users are attached to those required group names in AD.  Eg: "finance_users".   But, when Hive validate users, Hive crashes as it cannot validate  Linux group names with spaces such as "domain users".   How do you address this?  Is… (Show more)
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mcrandall
Hi,   I'm trying to install the MapR packages into my StreamSets Docker container.  I have all of the prerequisites installed in an opt/mapr volume.  I install the MapR packages in the StreamSets UI.  However, when I restart the container after installation the packages appear to not be installed. I am using the MapR developer sandbox v6.0.1 in a… (Show more)
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reedv
Looking at some discussions of Cask CDAP installation for MapR (Google Groups), there is a thread saying that  CDAP doesn't support running with MapR DB. CDAP supports MapR but only when running with HBase. MapR dropped support for HBase in MapR 6.0. To work around this we install and run HBase. and as clarification on this... MapR dropped… (Show more)
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terryhealy
We recently upgraded our cluster to 6.0.1 / MEP 5.0.0 and are trying to modernize storage of our primary datasets. One of these is Netflow data, which is stored in a MapR-DB JSON table. (Bad choice??) I'm able to do very crude searches using mapr dbshell, but previously used Impala. All indications are that the cool kids are all using Drill; but… (Show more)
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waikiat.yip
Hi Mapr Team,  I have followed this procedure and have successfully done the 1, and 2 tasks, but task 3 never success.  Converting a MapR Cluster from Root to Non-Root User    useradd poweryip2 –g 5000 –u 6001 systemctl stop mapr-warden systemctl stop mapr-zookeeper cd /opt/mapr/server/ ./config-mapr-user.sh -u poweryip2 systemctl start… (Show more)
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Hao Zhu
Author: Hao Zhu   Original Publication Date: June 5, 2015   Environment : Spark 1.3.1 Goal This article introduces the behavior of Hive outer join. Solution From Hive Outer Join Behavior, here are the definitions of Preserved Row table, Null Supplying table, During Join predicate and After Join predicate(Where predicate). Take a left outer…
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Wibe2017
Hi,    First of all, Happy New Year  ,    As you might already know, Hadoop 3.0 has been release few weeks ago,    The most important feature in this release (in my opinion) was the HDFS Erasure Coding, wich will replace the replication x3 (200% storage overhead). It is a technique that is based on parity blocks, that will decrease the storage… (Show more)
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rahul.panda
Hello Dear Members What are the ways to downgrade a MapR v6 running on a production cluster to a MapR v5, restoring all the old configuration?  -> What is the prerequisite for the downgrade? -> The step by step procedure for the downgrade.   Thank You
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Velumani
Hi, I am trying to setup MapR 6.0.1 in aws using CloudFormation with reference to the blog 9 Steps to Deploying the MapR Converged Data Platform on AWS | MapR.    While creating the Stack, I used default template URL (https://s3.amazonaws.com/awsmp-fulfillment-cf-templates-prod/c4e41a39-a53d-4f83-84a0-760f94bc31b2.8d0a9abb-2eca-4aa1-b7a… ) and… (Show more)
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