hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5657) Validate data passed through TestReduceFetch
Date Sat, 11 Apr 2009 00:24:14 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Douglas updated HADOOP-5657:
----------------------------------

    Attachment: 5657-0.patch

The following are now validated in the reduce:
* Each map produces one record for each of 4096 small keys
* Includes unique large records, each straddled by a pair of small records from another map
(to detect corruption from the merge)
* Changes some parameters for {{testReduceFromDisk}} to make intermediate merges with in-memory
data occur occasionally

> Validate data passed through TestReduceFetch
> --------------------------------------------
>
>                 Key: HADOOP-5657
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5657
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred, test
>            Reporter: Chris Douglas
>         Attachments: 5657-0.patch
>
>
> While TestReduceFetch verifies the reduce semantics for reducing from in-memory segments,
it does not validate the data it reads. Data corrupted during the merge will not be detected.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message