Administering Hadoop :
- The person who administers Hadoop is called HADOOP ADMINISTRATOR.
- Some of the common administering tasks in Hadoop are :
- Monitor health of a cluster
- Add new data nodes as needed
- Optionally turn on security
- Optionally turn on encryption
- Recommended, but optional, to turn on high availability
- Optional to turn on MapReduce Job History Tracking Server
- Fix corrupt data blocks when necessary
- Tune performance
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