[HDFS-9805] TCP_NODELAY not set before SASL handshake in data transfer pipeline

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha1
• Component/s: datanode
• Target Version/s: 2.8.0
• Assignee: Gary Helmling
• Reporter: Gary Helmling
• Created: 13/Feb/16 00:31
• Updated: 02/Oct/19 17:14
• Resolved: 05/Jul/16 18:41

Description

There are a few places in the DN -> DN block transfer pipeline where TCP_NODELAY is not set before doing a SASL handshake:

• in DataNode.DataTransfer::run()
• in DataXceiver::replaceBlock()
• in DataXceiver::writeBlock()