[jira] Updated: (MAPREDUCE-326) The lowest level map-reduce APIs should be byte oriented
[ https://issues.apache.org/jira/browse/MAPREDUCE-326?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Tom White updated MAPREDUCE-326: Attachment: MAPREDUCE-326.pdf Here's a proposal for a binary API for review. The lowest level map-reduce APIs should be byte oriented Key: MAPREDUCE-326 URL: https://issues.apache.org/jira/browse/MAPREDUCE-326 Project: Hadoop Map/Reduce Issue Type: Improvement Reporter: eric baldeschwieler Attachments: MAPREDUCE-326.pdf As discussed here: https://issues.apache.org/jira/browse/HADOOP-1986#action_12551237 The templates, serializers and other complexities that allow map-reduce to use arbitrary types complicate the design and lead to lots of object creates and other overhead that a byte oriented design would not suffer. I believe the lowest level implementation of hadoop map-reduce should have byte string oriented APIs (for keys and values). This API would be more performant, simpler and more easily cross language. The existing API could be maintained as a thin layer on top of the leaner API. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Updated: (MAPREDUCE-326) The lowest level map-reduce APIs should be byte oriented
[ https://issues.apache.org/jira/browse/MAPREDUCE-326?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Tom White updated MAPREDUCE-326: Attachment: MAPREDUCE-326-api.patch And an accompanying draft patch for the raw API classes. The lowest level map-reduce APIs should be byte oriented Key: MAPREDUCE-326 URL: https://issues.apache.org/jira/browse/MAPREDUCE-326 Project: Hadoop Map/Reduce Issue Type: Improvement Reporter: eric baldeschwieler Attachments: MAPREDUCE-326-api.patch, MAPREDUCE-326.pdf As discussed here: https://issues.apache.org/jira/browse/HADOOP-1986#action_12551237 The templates, serializers and other complexities that allow map-reduce to use arbitrary types complicate the design and lead to lots of object creates and other overhead that a byte oriented design would not suffer. I believe the lowest level implementation of hadoop map-reduce should have byte string oriented APIs (for keys and values). This API would be more performant, simpler and more easily cross language. The existing API could be maintained as a thin layer on top of the leaner API. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
