[HBASE-11825] Create Connection and ConnectionManager

• Type: Improvement
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.99.0
• Hadoop Flags: Reviewed
• Assignee: Solomon Duskis
• Reporter: Carter
• Created: 26/Aug/14 14:11
• Updated: 06/Apr/18 17:51
• Resolved: 16/Sep/14 18:46

Description

This is further cleanup of the HBase interface for 1.0 after implementing the new Table and Admin interfaces. Following Enis's guidelines in HBASE-10602, this JIRA will generate a new ConnectionManager to replace HCM and Connection to replace HConnection.

For more detail, this JIRA intends to implement this portion:

interface Connection extends Closeable{
  Table getTable(), and rest of HConnection methods 
  getAdmin()
  // no deprecated methods (cache related etc)
}

@Deprecated
interface HConnection extends Connection {
  @Deprecated
  HTableInterface getTable()
  // users are encouraged to use Connection
}

class ConnectionManager {
  createConnection(Configuration) // not sure whether we want a static factory method to create connections or a ctor
}

@Deprecated
class HCM extends ConnectionManager {
  // users are encouraged to use ConnectionManager
}

Issue Links

• blocks: HBASE-11995 Use Connection and ConnectionFactory where possible
• is depended upon by: HBASE-11879 Change TableInputFormatBase to take interface arguments
• is part of: HBASE-10602 Cleanup HTable public interface
• relates to: HBASE-12017 Use Connection.createTable() instead of HTable constructors.