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--- learn:bigdata:hdfs [2014/08/07 16:32] – [Nodes] yehuda
+++ learn:bigdata:hdfs [2022/01/03 16:03] (current) – external edit 127.0.0.1
@@ Line 4: / Line 4: @@
   * HDFS has [[wp>Fault tolerance]] - [[HDFS]] replicate same [[Data block]] on X [[Data node|Data nodes]]. X is  [[Replication factor]]
   * HDFS Master / Slaves architecture
+===== HDFS Features =====
+  * Rack awarness - What happends if entire rack is lost ?
+  * Reliable storage
+  * High throughput
 ===== Tools =====
   * [[dfsadmin]]
@@ Line 10: / Line 15: @@
 ===== Nodes =====
+==== Data world ====
   * [[Name node]] - FS Ops, Block Mapping
   * [[Secondary name node]] - Checkpoint Ops
   * [[Data node]] - Block Ops, Replications
-  * [[Job tracker]]
+==== MapReduce world ====
+See: [[MapReduce]]
+  * Master: [[Job tracker]] - controller of [[Task tracker|Task trackers]]
+  * [[Task tracker]]

learn/bigdata/hdfs.1407429144.txt.gz · Last modified: 2022/01/03 16:03 (external edit)

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