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Questions tagged [kylin]

An open source distributed Analytical Engine from eBay to provide SQL interface and multi-dimensional analysis (OLAP) on Hadoop to support TB to PB size analysis.

An open source distributed Analytical Engine from eBay to provide SQL interface and multi-dimensional analysis (OLAP) on Hadoop to support TB to PB size analysis.

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158 questions
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1 answer

What are Apache Kylin Use Cases?

I recently came across Apache Kylin, and was curious what it's use cases are. From what I can tell, it seems to be a tool designed to solve very specific problems related to upwards of 10+ billion rows, aggregating, caching and querying data from…
unseen_damage
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Copy particular XML document element to Another XML document using shell commands

I am working on installing Kylin on AWS EMR via shell script . I have an xml file with below content from which I need to copy particular document element to another xml file . This is the manual step I need to automate using shell commands while…
Sai
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Kylin implementation

I'm planning to do a poc on kylin at my company. I went through the apache documentation and I have couple of questions regarding installation and overall architecture. Can I have kylin(job/query) engine on one emr cluster, hadoop/hive (source or…
Kishore
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java.lang.NoSuchMethodError: org.apache.hive.common.util.ShutdownHookManager.addShutdownHook

I'm trying to build a cube on Kylin with Spark as engine type. The cluster contains the following tools: OS image: 1.0-debian9 Apache Spark 2.4.4 (changed from 1.6.2) Apache Hadoop 2.7.4 Apache Hive 1.2.1 I'm getting this error while building a…
Arjun A J
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1 answer

sql order by does not work when spark connect to kylin via jdbc

We use apache spark to query data from apache kylin via jdbc,we write a sql with a order by clause,but sometimes it does not work. Briefly,there is a table called shop_dim in kylin,a field SHOP_ID is not in descending order,I use spark jdbc to query…
hometown
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Kylin cube builds successfully but its size is shown as 0 KB

I have installed apache kylin on hadoop client machine. I have created data model and cube successfully. cube build is also successful but when I go to models tab it shows cube's size as 0 KB. When I go to the insights tab, I can query the dimension…
Aali
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Apache kylin cube creation with rest API

I was trying to create a cube from scratch using rest api with a json file of cube definition, i tried curl commands to the rest api which doesn't seem to work and i tried using their kylin client tool and even that fails to create a cube,so i am…
Ragzz
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Getting "NoSuchMethodError: org.apache.hadoop.mapreduce.Job.setJar" error when run mapreduce in Cloudera CDH 5.8

I am a cloudera manager newbie, I use cloudera manager v5.8 install CDH clusters,I installed in the cluster hdfs, hbase, hive, MR2 (yarn) and other components, used to run some programs，But when I run a program associated with mapreduce, i get a…
William
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First steps for OLAP within BigData world

First of all I may be misinformed about BigData capability nowadays. So, don't hesitate to correct me if I'm too optimistic. I usually work with regular KPIs, like show me: count of new clients where they meets certain complex conditions (joining…
user1464922
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Apache Kylin Unable to find HBase common lib

I have installed Hadoop version 2.6.0, HBase version 0.99.0 , Hive version 1.2, Kylin version 1.5.0. I have setup all of the above in Standalone mode while in running Kylin it checks in early stage about Hadoop, HBase and Hive. Each and everything…
Kunal Gupta
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1 answer

An error occurred while creating datasets: Dataset could not be created

I have a running Kylin Cluster in Kubernetes and Superset in Kubernets also. Kylin is already configured with a built cube "kylin_sales_cube" Superset is already configured with Kylin driver and the connection is established. While trying to…
Stavros Koureas
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1 answer

Update to mapred-default.xml not visible in web UI configuration

I have an Apache Kylin container running in docker. I was getting a Java heap space error in map reduce phase so I tried updating some parameters in Hadoop mapred-default.xml file. After making the changes, I restarted the container but, when I go…
PaulaR13
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Apache Kylin docker image fails to start

I have downloaded the Apache Kylin docker image from their site, I use the following command to run the image and it exits with code 139: docker run -d -m 8G -p 7070:7070 -p 8088:8088 -p 50070:50070 -p 8032:8032 -p 8042:8042 -p 16010:16010…
Amin Baig
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Failed to get recommend Cuboid

when I click on model--planner--recommend,an error occurred. "Failed to get recommend Cuboid;Check whether you have enabled System Cube."
flytow
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How to load CSV file into Apache Kylin

I want to load a csv file that contains >10000000 rows of data into Apache Kylin. Currently, my Kylin (version 3.0.2) is installed in AWS EMR cluster. My csv file is currently stored in s3 bucket. I created the hive table in the EMR and I was able…
Fish
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