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rahul
I have a spring based web application hosting on the wildfly server. The web application deployment is failing with below error:   Caused by: java.lang.NoClassDefFoundError: Failed to link com/mapr/hadoop/yarn/util/MapRFSLoggingHandler (Module "org.mapr:main" from local module loader @1c53fd30 (finder: local module finder @50cbc42f (roots:… (Show more)
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johniccp
Following updated instructions, I installed VirtualBox 5.2.16 on my Windows 10 computer.  Then, I imported the 6.0.1 Sandbox for Hadoop appliance. Process seemed to work without a problem. I use a wireless router and so my network setting is Host-only Adapter. I started the node and was able to login as MapR or as root.  When I executed the… (Show more)
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suhaibahmed2
I am trying to create a table in Hbase using as a Spark Dataframe. (from a spark Data frame). The simplified code I am trying is this.   import org.apache.spark.sql.datasources.hbase.HBaseTableCatalog;   #Create a Data frame with two columns and two rows. val df =sc.parallelize(Seq(("1","a"),("2","b"))).toDF(Seq("col1","col2"): _*);    … (Show more)
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raghunandepu
Apart from Apache Drill official documentation, what are some good books on Apache Drill ?#drill apache drill Can we get Apache Drill official documentation as a PDF?
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sgupta0103
Hi  I was planning to take MCSD certification but see 2 versions of the exam that is v1.6 and v2.1. For v2.1 the self-learning DEV362 is not available yet and would be available later. In that case, would you advise taking v1.6 exam? Is v1.6 based on Spark 1.0? Also the MCSD study guide is not available for v2.1 of the exam.   Thanks, Shobhit
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qulino
Dear Mapr Community, I face the 'Volume data unavailable' & 'Volume Low data Replication' on volume containing metrics on 1 node: /var/mapr/local/mycluster_serv1/metrics   One of the volume containers is offline:   maprcli dump containerinfo -ids 2083 -json { "timestamp":1534350208488, "timeofday":"2018-08-15 07:23:28.488 GMT+0300",… (Show more)
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bharvi
Is it reduce-only job possible in Hadoop?
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Azharuddin
I'm trying to reduce noise in a binary python array by removing all completely isolated single cells, i.e. setting "1" value cells to 0 if they are completely surrounded by other "0"s. I have been able to get a working solution by removing blobs with sizes equal to 1 using a loop, but this seems like a very inefficient solution for large arrays:… (Show more)
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john.humphreys
How can I monitor MapR-DB region splits and packing?  I'd like to know when they start and stop to see if they are responsible for some intermittent slowness we see when using MapR-DB and/or MapR-Streams.   If the answer is Spyglass... is there an alternative way?  We had to disable that due to performance bugs in MapR 5.2.0.
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da
Currently I am able to replicate data from Oracle-DB to MapR-DB with MapR-Streaming . Oracle -> Oracle GoldenGate (MapR Streaming Client) ->MapR-FS (MapR Streaming data) ->Ab-initio ->MapR DB.   But here I am looking for a solution which can replace Ab-initio. As suggestion ? Can MapR Apache Spark solve the purpose ? How ? any other option ...… (Show more)
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