[HDFS-14710] RBF: Improve some RPC performance by using previous block

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.3.0
• Component/s: rbf
• Hadoop Flags: Reviewed
• Assignee: ZanderXu
• Reporter: ZanderXu
• Created: 09/Aug/19 02:29
• Updated: 28/Aug/19 20:31
• Resolved: 28/Aug/19 17:48

Description

We can improve some RPC performance if the extendedBlock is not null.

Such as addBlock, getAdditionalDatanode and complete.

Since HDFS encourages user to write large files, so the extendedBlock is not null in most case.

In the scenario of Multiple Destination and large file, the effect is more obvious.