hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-445) pread() fails when cached block locations are no longer valid
Date Fri, 11 Jun 2010 23:45:16 GMT

     [ https://issues.apache.org/jira/browse/HDFS-445?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HDFS-445:
-----------------------------

    Attachment: hdfs-445-0.20-append.txt

Here's a patch against the current 0.20-append branch (probably about the same as Jitendra's)

> pread() fails when cached block locations are no longer valid
> -------------------------------------------------------------
>
>                 Key: HDFS-445
>                 URL: https://issues.apache.org/jira/browse/HDFS-445
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.20-append
>            Reporter: Kan Zhang
>            Assignee: Kan Zhang
>             Fix For: 0.21.0
>
>         Attachments: 445-06.patch, 445-08.patch, hdfs-445-0.20-append.txt, HDFS-445-0_20.2.patch
>
>
> when cached block locations are no longer valid (e.g., datanodes restart on different
ports), pread() will fail, whereas normal read() still succeeds through re-fetching of block
locations from namenode (up to a max number of times). 

-- 
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