Hadoop Name Node Capacity Planning

Kevin Feasel

2017-07-17

Hadoop

Mamta Chawla has some rules of thumb for sizing your Hadoop name node:

Both name node servers should have highly reliable storage for their namespace storage and edit-log journaling. That’s why — contrary to the recommended JBOD for data nodes — RAID is recommended for name nodes.

Master servers should have at least four redundant storage volumes — some local and some networked — but each can be relatively small (typically 1TB).

It is easy to determine the memory needed for both name node and secondary name node. The memory needed by name node to manage the HDFS cluster metadata in memory and the memory needed for the OS must be added together. Typically, the memory needed by the secondary name node should be identical to the name node.

Click through for some specific recommendations.

Related Posts

Anomaly Detection With Kafka Streams

Ajmal Karuthakantakath shows us an application which performs fairly simple anomaly detection using Kafka Streams: The problem is in the banking loan payment domain, where customers have taken a loan and they need to make monthly payments to repay the loan amount. Assume there are millions of customers in the system and all these customers need […]

Read More

Crossing The Streams With Kafka

Himani Arora shows how to join two Kafka streams together: KStream-KStream Join It is a sliding window join, that means, all tuples close to each other with regard to time are joined. Time here is the difference up to size of the window. These joins are always windowed joins because otherwise, the size of the internal state […]

Read More

Categories

July 2017
MTWTFSS
« Jun Aug »
 12
3456789
10111213141516
17181920212223
24252627282930
31