Skip to content
Hadoop Troubleshooting Guide - Eric's Blog
Cloudera Hadoop Problem Solver....
  • Hadoop
  • Hive
  • Impala
  • Sqoop
  • Cloudera Manager
  • Yarn
  • Oozie
  • Ranger
  • Sentry
  • Spark
  • Search
  • Hadoop
  • Hive
  • Impala
  • Sqoop
  • Cloudera Manager
  • Yarn
  • Oozie
  • Ranger
  • Sentry
  • Spark
  • Search
Month: March 2016

Month: March 2016

Home 2016 March

Hive Dynamic Insert Query Only Uses 1 Reducer out of Thousands of Reducers

Eric Lin March 15, 2016 March 15, 2016

This article explains one of the possible reasons caused Hive dynamic insert query to only use one reducer to do the job, out of thousands of other reducers which do no job at all. See the below Hive query that triggers dynamic partitioning insert: This query will create thousands of …

Cloudera
Read more"Hive Dynamic Insert Query Only Uses 1 Reducer out of Thousands of Reducers"5

How to rename a Hive Database

Eric Lin March 3, 2016 October 25, 2016

This article explains how to rename a database in Hive manually without modifying database locations, as the command: still does not work due to HIVE-4847 is not fixed yet. For the DB rename to work properly, we need to update three tables in the HMS DB. As I am using …

Cloudera
Read more"How to rename a Hive Database"9
Follow @ericlin05

Eric Lin
@ericlin05

  • Snowflake Guide New Post: Query Against Parquet File failed with error “Not yet implemented: Unsupported encoding” https://t.co/w0lp5ti0jY
    about 2 days ago
  • Snowflake Guide New Post: Key Based Authentication Failed with “JWT token is invalid” Error https://t.co/x5URWXtYud
    about 4 months ago
  • Snowflake Guide New Post: Unable to Change Column Type with Collation https://t.co/ktNFodcoIN
    about 4 months ago
March 2016
M T W T F S S
 123456
78910111213
14151617181920
21222324252627
28293031  
« Feb   May »

Family

  • DevStudio
  • Tracy Lin
  • Trevor Lin
  • 中文博客

Friends

  • RAYNIX 筆記
Powered by Roseta & WordPress.
©2021 Hadoop Troubleshooting Guide - Eric's Blog
Back to Top
✕

My new Snowflake Blog is now live. I will not be updating this blog anymore but will continue with new contents in the Snowflake world!