[HADOOP-9669] Reduce the number of byte array creations and copies in XDR data manipulation - ASF JIRA

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Details

Type: Improvement
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.1.1-beta
Component/s: nfs
Labels:
None

Description

XDR.writeXxx(..) methods ultimately use the static XDR.append(..) for writing each data type. The static append creates a new array and copy data. Therefore, for a singe reply such as RpcAcceptedReply.voidReply(..), there are multiple array creations and array copies. For example, there are at least 6 array creations and array copies for RpcAcceptedReply.voidReply(..).