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Code Block
titleHBaseConstants.java
public class HBaseConstants {

  public static final String CONF_OUTPUT_VERSION_KEY = HCatConstants.HCAT_DEFAULT_TOPIC_PREFIX+".hbase.outputVersion";

  public static final String CONF_TABLE_NAME_KEY = HCatConstants.HCAT_DEFAULT_TOPIC_PREFIX+".hbase.tableName";

  public static final String CONF_COLUMN_MAPPING_KEY = HCatConstants.HCAT_DEFAULT_TOPIC_PREFIX+"."+ HBaseSerDe.HBASE_COLUMNS_MAPPING;

}

HBaseDirectStorageDriver itself is a pretty straightforward implementation. HBaseDirectOutputFormat decorates HBase's TableOutputFormat or we can implement one ourselves controlling the client directly enabling us better flexibility with tuning ie disabling WAL for higher write rates. This OutputFormat's key is not used and the Value can be either a HBase Put or Delete.

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