Export HBase Data: Methods Guide
There are two methods available in HBase for exporting table data:
- Exporting data using the HBase shell command line tool:
In the HBase shell, you can use the scan command to scan table data and output the results to the terminal or save them to a file. For example, you can use the following command to export table data to a file:
scan 'table_name' > output.txt
- Export data using MapReduce job:
HBase provides a utility class org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil to easily read HBase table data in MapReduce jobs. Users can write a MapReduce job to read HBase table data and write the results to an output file.
Users can choose the appropriate method based on their specific needs to export data from HBase tables.