Steps To Upgrade Hadoop 1.x To Hadoop 2.x?

1.	Steps To Upgrade Hadoop 1.x To Hadoop 2.x?
Answer» To upgrade 1.x to 2.x dont upgrade directly. Simple DOWNLOAD locally then remove old files in 1.x files. Up-gradation take more time. Share folder there. its important.. share.. hadoop .. mapreduce .. lib. Stop all PROCESSES. DELETE old meta data info… from work/hadoop2data Copy and RENAME first 1.x data into work/hadoop2.x Don’t format NN while up gradation. Hadoop namenode -upgrade // It will take a lot of time. Don’t close previous terminal OPEN new terminal. Hadoop namenode -rollback. To upgrade 1.x to 2.x dont upgrade directly. Simple download locally then remove old files in 1.x files. Up-gradation take more time.

Answer»

To upgrade 1.x to 2.x dont upgrade directly. Simple DOWNLOAD locally then remove old files in 1.x files. Up-gradation take more time.

To upgrade 1.x to 2.x dont upgrade directly. Simple download locally then remove old files in 1.x files. Up-gradation take more time.

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