= 2011-10-25 =

== Hadoop ==

 * [http://bradhedlund.com/2011/09/10/understanding-hadoop-clusters-and-the-network/ Understanding Hadoop Clusters and the Network]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Hadoop-Server-Roles-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Hadoop-Cluster-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Workflow-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Writing-Files-to-HDFS-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Hadoop-Rack-Awareness-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Preparing-HDFS-Writes-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/HDFS-Pipleline-Write-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/HDFS-Pipleline-Write-Success-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Multi-bock-Replication-Pipeline-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Client-Writes-Span-Cluster-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Name-Node-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Re-replicating-Missing-Replicas2-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Secondary-Name-Node-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Client-Read-from-HDFS-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Data-Node-Read-from-HDFS-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Map-Task-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/What-if-Map-Task-data-isnt-local-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Reduce-Task-s.png)]]
 * [[Image(http://bradhedlund.s3.amazonaws.com/2011/hadoop-network-intro/Unbalanced-Hadoop-Cluster-s.png)]]