Chris Nauroth created HDFS-9239: ----------------------------------- Summary: DataNode Lifeline Protocol: an alternative protocol for reporting DataNode liveness Key: HDFS-9239 URL: https://issues.apache.org/jira/browse/HDFS-9239 Project: Hadoop HDFS Issue Type: New Feature Components: datanode, namenode Reporter: Chris Nauroth Assignee: Chris Nauroth Attachments: DataNode-Lifeline-Protocol.pdf
This issue proposes introduction of a new feature: the DataNode Lifeline Protocol. This is an RPC protocol that is responsible for reporting liveness and basic health information about a DataNode to a NameNode. Compared to the existing heartbeat messages, it is lightweight and not prone to resource contention problems that can harm accurate tracking of DataNode liveness currently. The attached design document contains more details. -- This message was sent by Atlassian JIRA (v6.3.4#6332)