Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-3211

Enhance hbase column mapping strategy to support complicated structures

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 0.9.0
    • Fix Version/s: None
    • Component/s: HBase Handler
    • Labels:
      None

      Description

      With the current Hive-HBase integration, we need to specify the "hbase.columns.mapping" property that maps the hbase columns to the columns in hive. So for example,

      hive> CREATE EXTERNAL TABLE complex(
      key string, 
      s struct<col1 : int, col2 : int>)
      STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
      WITH SERDEPROPERTIES (
      "hbase.columns.mapping" = ":key,cf:a"
      )TBLPROPERTIES ("hbase.table.name" = "TEST_TABLE");;
      

      The struct definition in the above query can quickly get very ugly if we are dealing with a very complicated structures stored in hbase columns. We should probably enhance the current columns mapping strategy to be able to provide a custom serializer and let it detect the structure by itself.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                swarnim Swarnim Kulkarni
                Reporter:
                swarnim Swarnim Kulkarni
              • Votes:
                0 Vote for this issue
                Watchers:
                5 Start watching this issue

                Dates

                • Created:
                  Updated: