Data structures Array List Map Stack - Stack Heap (min, max) - PriorityQueue Queue - LinkedList Graph BinaryTree Algorithms Sorting Searching Dynamic programming Greedy algo Graph Indexing - BTree, B+Tree, how the indexing in ElasticSearch works internally? Indexing in a distributed system Java concurrency Usa...

Codebase structure Core subprojects hadoop-common-project hadoop-client hadoop-hdfs-project hadoop-mapreduce-project hadoop-yarn-project hadoop-tools Dev support related

Installation Install hadoop via homebrew is easy! $ brew search hadoop $ brew install hadoop The installation log below : ==> Caveats In Hadoop's config file: /usr/local/opt/hadoop/libexec/etc/hadoop/hadoop-env.sh, /usr/local/opt/hadoop/libexec/etc/hadoop/mapred-env.sh and /usr/local/opt/hadoop/libexec/etc/hadoop/yarn-env.sh $...

Some introduction articles An introduction article from Google Code University : Introduction to Distributed System Design Protocals raft Zab in ZooKeeper Paxos Projects Hadoop ZooKeeper wiki Spark