CODEWITHSUNDEEP
hadoophbase
Vimal Jain
Vimal Jain

Reputation: 577

Hbase: Migration from standalone mode to Fully distributed mode

I want to if its possible to migrate from standalone mode to fully distributed mode in Hbase.I have some data in standalone mode which i would like to persist during migration. Please help.

Upvotes: 0

Views: 672

Answers (1)

Jakub Janoštík
Jakub Janoštík

Reputation: 186

Quite old question but recently I encountered same problem and solved it using following steps:

In standalone mode

Export table you want to migrate:

bin/hbase org.apache.hadoop.hbase.mapreduce.Driver export table_name /local/path/table_name_backup

In pseudodistributed/distributed mode

Copy table in hdfs using hadoop:

./bin/hadoop fs -copyFromLocal /local/path/table_name_backup/ table_name_backup

Import data using hbase:

./bin/hbase org.apache.hadoop.hbase.mapreduce.Driver import table_name table_name_backup

Remove old data from hdfs using hadoop:

./bin/hadoop dfs -rmr table_name_backup

U might want to check number of rows before and after migration to check if everything went according to plan:

./bin/hbase org.apache.hadoop.hbase.mapreduce.Driver rowcounter table_name

Upvotes: 4

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