Wednesday, February 6, 2019

"msck repair" of a partition table fails with error "Expecting only one partition but more than one partitions are found.".

Symptom:

In spark-shell, "msck repair" of a partition table named "database_name.table_name" fails with error "Expecting only one partition but more than one partitions are found.".

Thursday, January 24, 2019

Friday, January 11, 2019

How to configure Drill to use cgroups to hard limit CPU resource in Redhat/CentOS 7

Goal:

This article explains how to configure Drill to use cgroups to hard limit CPU resource in Redhat/CentOS 7.

Friday, November 16, 2018

How to write an example MapR Drill JDBC code which connects to a MapR-Drill Cluster with MapRSASL authentication

Goal:

How to write an example MapR Drill JDBC code which connects to a MapR-Drill Cluster with MapRSASL authentication.
The reason why we are using Simba Drill JDBC Driver instead of open source JDBC Driver is:
The open-source JDBC driver is not tested on the MapR Converged Data Platform. The driver supports Kerberos and Plain authentication mechanisms, but does not support the MapR-SASL authentication mechanism. 

Monday, November 12, 2018

How to install MapR Data Fabric for Kubernetes(KDF) on Kubernetes Cluster

Goal:

This article explains the steps in details on how to install MapR Data Fabric for Kubernetes(KDF) on Kubernetes Cluster.

Friday, November 9, 2018

How to start Dashboard in a test Kubernetes Cluster

Goal:

How to start Dashboard in a test Kubernetes Cluster.
Dashboard is a web-based Kubernetes user interface. You can use Dashboard to deploy containerized applications to a Kubernetes cluster, troubleshoot your containerized application, and manage the cluster itself along with its attendant resources.

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