Online Hadoop Projects -Solving small file problem in Hadoop

In this hadoop project, we are going to be continuing the series on data engineering by discussing and implementing various ways to solve the hadoop small file problem.
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What will you learn

  • What is Small file problem in Hadoop
  • How it arises (Batch and Streaming mode)
  • Solution (Streaming): Using flume
  • Solution (Streaming): Preprocessing and storing in a NoSQL database
  • Solution (Batch): Merging before storing in HDFS
  • Solution (Batch): Sequencefile
  • Solution (Batch): Compression
  • Solution (Batch): CombineFileInputFormat

Project Description

We have come to learn that Hadoop's distributed file system was engineered to favor fewer larger files over many small files. However, we mostly would not have control over how data come. Many data ingestion to data infrastructures come in small bits and whether we are implementing a data lake on HDFS or not, we will have to deal with this data inputs.

In this online hadoop project, we are going to be continuing the series on data engineering by discussing and implementing various ways to resolve the small file problem in hadoop.

We will start by defining what it means, how inevitable this situation could arise, how to identify bottlenecks in a hadoop cluster owing to the small file problem and varieties of ways to solve them.

Curriculum For This Mini Project

 
  Overview of the Project
02m
  Understanding the Hadoop Small File Problem?
33m
  Effect of the Small File Problem
05m
  How InputSplit works?
09m
  InputSplit and Block Boundary Overlap
08m
  How small file problem arises in batch mode?
05m
  Small File Problem in Batch Mode-Using CLI and Sqoop
11m
  How small file problem arises in a Streaming Context?
17m
  Solving the Small File Problem in a Streaming Context using Flume
18m
  Solving the Small File Problem in a Streaming Context by Storing in NoSQL
09m
  Quick Recap of the Previous Session
22m
  Solving Small File Problem in Batch Mode-Merging before storing in HDFS
42m
  Solving Small File Problem in Batch Mode using SequenceFile
23m
  Solving Small File Problem in Batch Mode using Compression
11m
  Solving Small File Problem in Batch Mode using CombineFileInputFormat
07m