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Lokesh
Hi, i was going through PDF MapR certified Data Analyst study guide. There are about 10 sample questions of which i have doubt about question No 2.   Which command would create a relation, XYZ, which contains the first 100 records of relation ABC, alphabetical order by customer last name? a) XYZ = LIMIT { ORDER ABC BY  last.name } 100; b)PQR… (Show more)
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Lokesh
Hi,   I am reading through basics of pig latin, i find it hard to understand how nested FOREACH..GENERATE work.    Below is the pig script from the 'Programming Pig explaining nested foreach.   daily = load 'NYSE_dividends' as (exchange:chararray, symbol:chararray, date:chararray,dividends:float); grpd = group divs by symbol; top3 = foreach… (Show more)
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shanmukhanand
Dear Team, One of our customer is looking for upgrading existing Map R environment from 5.0 to 5.2 version so is there any guideline which can help on the complete process execution, timelines and effort estimation etc ? Thanks
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onelson
Log into the MapR Community to add to course discussions. Connect with and learn from other students as well as MapR subject matter experts.   Course Discussions Essentials (ESS 100) Lesson 1 – Describe your big data problem Essentials (ESS 200) – What features are important for your big data projects?   Find all course discussions: MapR…
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sferry
Log into the MapR Community to add to course discussions. Connect with and learn from other students as well as MapR subject matter experts.   Course Discussions DEV 320 - HBase Data Model  Lesson 1 – Are you already using HBase? DEV 321 HBase Schema Design Lesson 5 – HBase complex data structures   DEV 322 Developing HBase Applications Basics…
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Lokesh
In course DA450 - Apache pig, slide guide page 60, there are relations explaining how to get count of all the rows. I am finding it difficult understand this.   I could understand UNIQUE = DISTINCT ROTHERA; but after this relation below relation is something i am finding it difficult to understand. unique_count = foreach (group UNIQUE all )… (Show more)
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sijabalakrishnan
I am running a code in Eclipse which involves data extraction from a URL and saving into a text file ( File creation). And surprisingly its throwing a "file not found" error for Output file creation in MapR cluster. This program runs perfectly in eclipse.  ERROR MESSAGE Exception in thread "Thread-52" Exception in thread "Thread-51"… (Show more)
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onelson
Think about the 3 Vs of big data: volume, velocity, and variety.   What features make your data difficult to store, process, or describe? Share specific stories of how you have struggled with a big data problem.
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nzrichard
Where are the:   Lab Files Here is a description of the materials (data files, licenses etc.) that are supplied to support the labs. These materials should be downloaded to your system before beginning the labs.   DEV351_LabFiles.zip Scripts, data, and other files necessary to complete this lab. MapR_Lab_Environment_Connection_Guide.pdf… (Show more)
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bgajjela
Hello,   In current Version of Mapr , if zookeeper is down, there is no alarm or alert generated. There are many services dependent on zookeeper, i believe having an alarm in Mapr for zookeeper service would help alot .    Thanks, Bharath
satishreddy
Hello,   I working on spark 1.5.2 version. I would like to implement multi-label classification in Scala. Please help me with sample code how convert that multiple labels into numeric format then to predict for multiple labels for each customer.   Thanks in advance
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