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Posted to common-issues@hadoop.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2013/09/18 02:29:52 UTC
[jira] [Commented] (HADOOP-9669) Reduce the number of byte array
creations and copies in XDR data manipulation
[ https://issues.apache.org/jira/browse/HADOOP-9669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13770214#comment-13770214 ]
Hudson commented on HADOOP-9669:
--------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #4432 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/4432/])
HADOOP-9669 Reduce the number of byte array creations and copies in XDR data manipulation. Contributed by Haohui Mai (brandonli: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1524259)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/main/java/org/apache/hadoop/oncrpc/SimpleUdpClient.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/main/java/org/apache/hadoop/oncrpc/SimpleUdpServerHandler.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/main/java/org/apache/hadoop/oncrpc/XDR.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/test/java/org/apache/hadoop/nfs/TestNfsTime.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/test/java/org/apache/hadoop/nfs/nfs3/TestFileHandle.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/test/java/org/apache/hadoop/oncrpc/TestXDR.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/test/java/org/apache/hadoop/oncrpc/security/TestCredentialsSys.java
> Reduce the number of byte array creations and copies in XDR data manipulation
> -----------------------------------------------------------------------------
>
> Key: HADOOP-9669
> URL: https://issues.apache.org/jira/browse/HADOOP-9669
> Project: Hadoop Common
> Issue Type: Improvement
> Components: nfs
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Haohui Mai
> Attachments: HADOOP-9669.001.patch, HADOOP-9669.002.patch, HADOOP-9669.003.patch, HADOOP-9669.patch
>
>
> 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(..).
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