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I'd like to install a MapR Cluster that has 2 node type, master node and data nodes. Is it possible to have MapR Nodes with having any MapR-FS disks?
Hi, I've a 5 node MapR cluster running on MapR Version 5.2. Each server has 250GB Memory and 15TB disk space. I noticed that there's a considerable amount of /tmp space used and it's growing as more users are trying to run their applications/jobs. In /tmp there're user caches that got created with each user(user id) that are trying to run jobs.… Show more
Hi All, We installed and configured Grafana in our UAT cluster the UI which come up with default 3 dashboards cldb , node and volume. I see an exclamatory mark in red near Node Dashboard. I tried to fix it by adding a parameter in opentsdb.conf and then took a restart of opentsdb and grafana so was able to make CLDB Dashboard but the issue is… Show more
Hi guys. I recently installed Impala on a 3-node MapR cluster. When I run a simple query.The performance is not as good as Impala+HDFS. Here is the query: SELECT * FROM ft_test, ft_wafer WHERE ft_test_parquet.id = ft_wafer_parquet.id and month = 1 and day = 8 and param = 2913; It took about 3s. But when using the same query but with HDFS. It… Show more
This could be because of HDFS SCAN on node 0 is taking more time:- HDFS_SCAN_NODE (id=0):(Total: 2s973ms, non-child: 2s973ms, % non-child: 100.00%) File Formats: PARQUET/SNAPPY:8 is "invalidate metadata" improving the performance? Could be related to [IMPALA-2400] Unpredictable locality behavior for reading Parquet files - ASF JIRA
Error While running Spark - shell or running oozie-spark hive actionjava.lang.NoClassDefFoundError: org/apache/tez/dag/api/SessionNotRunning at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:532) at org.apache.spark
Issue: Some times you may come across an issue like this while running spark-shell or Oozie spark action java.lang.NoClassDefFoundError: org/apache/tez/dag/api/SessionNotRunning at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:532) at… Show more
can you please give me any reference so that i can access csv files in maprfs using spark in eclipse( installed in mapr client)
Hi Team, I am trying to connect MAPR Drill driver to hadoop cluster. The connection works successfully (tested ok) in direct mode. The connection gives an error in zookeeper quorum mode. Error - [MapR][Drill] (1010) Error occurred while trying to connect: [MapR][Drill] (10) Failure occurred while trying to connect to… Show more
I began the course ADM 201 - Configure a MapR Cluster when it was free. can you continue it?
Hi Cesar García Martínez, If you registered ADM 201 before May 9, 2017, you can still access the course by clicking the drop-down in your Profile, in the upper left corner. There you'll see a list of everything you ever enrolled in. Click any course link, and that course opens. Courses in your Profile list remain yours to take and re-take. For…
SparkR is an R package that provides a lightweight front end for using MapR Spark from R. In MapR-Spark 2.1.0, SparkR provides a Distributed DataFrame implementation that supports operations like selection, filtering, aggregation, etc. The entry point into SparkR is the SparkSession, which connects your R program to a MapR/Spark cluster. … Show more
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Hello Team, We have a new requirement that where everyone asking us to configure to kill user jobs (Yarn/Spark/Hive etc) which runs > x number of hours. Is there a parameter that we can setup in MapR? Monitoring cluster 24*7 and killing manually is lot of effort. Apparently the users are claiming that this possible in Horton works using Ambari.… Show more