Contributor: Hao Zhu

MapR Converge Blog author, Hao Zhu

Hao Zhu is a Manager, Hadoop Escalation Group at MapR. Prior to MapR, Hao was Principal Technical Support Engineer at Pivotal, before Pivotal he was an Oracle DBA at eBay. is his personal technical blog.

Blog Posts by Hao Zhu

September 11, 2015 | By Hao Zhu

Resource Allocation Configuration for Spark on YARN

In this blog post, I will explain the resource allocation configurations for Spark on YARN, describe the yarn-client and yarn-cluster modes, and will include examples. Spark can request two resources in YARN: CPU and memory. Note that Spark configurations...

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July 24, 2015 | By Hao Zhu

Best Practices for YARN Resource Management

In this blog post, I will discuss best practices for YARN resource management. The fundamental idea of MRv2(YARN) is to split up the two major functionalities—resource management and job scheduling/monitoring, into separate daemons. The idea is to have...

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July 20, 2015 | By Hao Zhu

Hive Transaction Feature in Hive 1.0

The New Hive Transaction Feature Adds ACID Semantics at the Row-Level This article describes the new Hive transaction feature introduced in Hive 1.0. This new feature adds initial support of the 4 traits of database transactions – atomicity, consistency...

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