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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (Created) (JIRA)" <ji...@apache.org> on 2012/03/06 09:51:00 UTC
[jira] [Created] (HDFS-3053) Support for true zero-copy
(mmap-based) reads
Support for true zero-copy (mmap-based) reads
---------------------------------------------
Key: HDFS-3053
URL: https://issues.apache.org/jira/browse/HDFS-3053
Project: Hadoop HDFS
Issue Type: New Feature
Components: hdfs client
Reporter: Todd Lipcon
Continuing a discussion started in HDFS-2834, it would be slick to provide support for a true zero-copy read API. In this style API, rather than having the user pass buffers to read into, the DFS client would provide buffers to the user. This allows the client to pass slices of mmaped blocks, for example, which can cut one or two copies out of many read scenarios.
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[jira] [Resolved] (HDFS-3053) Support for true zero-copy
(mmap-based) reads
Posted by "Todd Lipcon (Resolved) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-3053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved HDFS-3053.
-------------------------------
Resolution: Duplicate
looks like Dhruba filed this at the same time I did. Resolving as dup of HDFS-3051
> Support for true zero-copy (mmap-based) reads
> ---------------------------------------------
>
> Key: HDFS-3053
> URL: https://issues.apache.org/jira/browse/HDFS-3053
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: hdfs client
> Reporter: Todd Lipcon
>
> Continuing a discussion started in HDFS-2834, it would be slick to provide support for a true zero-copy read API. In this style API, rather than having the user pass buffers to read into, the DFS client would provide buffers to the user. This allows the client to pass slices of mmaped blocks, for example, which can cut one or two copies out of many read scenarios.
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