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From "Sergey Soldatov (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (PHOENIX-1973) Improve CsvBulkLoadTool performance by moving keyvalue construction from map phase to reduce phase
Date Tue, 02 Feb 2016 23:26:39 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15129331#comment-15129331
] 

Sergey Soldatov edited comment on PHOENIX-1973 at 2/2/16 11:25 PM:
-------------------------------------------------------------------

Mapper's output was comparable to the raw data (with about 10% overhead).  Trying to get the
exact number I was blocked by PHOENIX-2649 and spent some time finding root cause. Will get
back with numbers shortly. 


was (Author: sergey.soldatov):
Mapper's output was comparable to the raw data (with about 10% overhead).  Trying to get the
exact number I was blocked by PHOENIX-2649 and spent some finding root cause. Will get back
with numbers shortly. 

> Improve CsvBulkLoadTool performance by moving keyvalue construction from map phase to
reduce phase
> --------------------------------------------------------------------------------------------------
>
>                 Key: PHOENIX-1973
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1973
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: Rajeshbabu Chintaguntla
>            Assignee: Rajeshbabu Chintaguntla
>             Fix For: 4.4.1
>
>         Attachments: PHOENIX-1973-1.patch
>
>
> It's similar to HBASE-8768. Only thing is we need to write custom mapper and reducer
in Phoenix. In Map phase we just need to get row key from primary key columns and write the
full text of a line as usual(to ensure sorting). In reducer we need to get actual key values
by running upsert query.
> It's basically reduces lot of map output to write to disk and data need to be transferred
through network.



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