[HDFS-2616] Change DatanodeProtocol#sendHeartbeat to return HeartbeatResponse

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HA branch (HDFS-1623)
• Fix Version/s: HA branch (HDFS-1623)
• Component/s: datanode, ha, namenode
• Hadoop Flags: Reviewed
• Assignee: Suresh Srinivas
• Reporter: Suresh Srinivas
• Created: 01/Dec/11 01:46
• Updated: 24/Jan/12 19:51
• Resolved: 02/Dec/11 00:03

Description

DatanodeProtocol#sendHeartbeat() returns DatanodeCommand[]. This jira proposes changing it to to return HeartbeatResponse that has DatanodeCommand[]. This allows adding other information that can be returned by the namenode to the datanode, instead of having to only return DatanodeCommand[]. For relevant discussion see HDFS-1972.