Hadoop Development - CSC
Hadoop Development - CSC
Hadoop Development - CSC
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<strong>Hadoop</strong> Architectural Overview<br />
Name Node<br />
Job Tracker<br />
TBSC 2009<br />
Secondary<br />
Name Node<br />
Data Nodes<br />
•Data Nodes are commodity servers<br />
- Provide both storage and processing<br />
•Name Node is a SPoF<br />
- HA/Resilient server is a good choice<br />
•Secondary Name Node is a “warm”<br />
standby<br />
- Fail-over requires some downtime<br />
- Ideally the same server choice as the<br />
Name<br />
Node<br />
•Job Tracker<br />
- Loss does not incur data loss, but in flight<br />
jobs<br />
are lost<br />
11/10/2011 12:53 PM 0725-23_TBSC 2009 12
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