hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-445) pread() fails when cached block locations are no longer valid
Date Fri, 10 Jul 2009 20:45:14 GMT

    [ https://issues.apache.org/jira/browse/HDFS-445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729808#action_12729808
] 

Raghu Angadi commented on HDFS-445:
-----------------------------------

+1. This is an important fix for clients that keep a file open for a long time (like HBase).

> pread() fails when cached block locations are no longer valid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
>            Reporter: Kan Zhang
>            Assignee: Kan Zhang
>         Attachments: 445-06.patch, 445-08.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 when cached block locations are no longer valid (e.g., datanodes restart on different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