You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-issues@hadoop.apache.org by "Harsh J (Commented) (JIRA)" <ji...@apache.org> on 2011/12/28 22:45:30 UTC
[jira] [Commented] (HADOOP-6986) SequenceFile.Reader should
distinguish between Network IOE and Parsing IOE
[ https://issues.apache.org/jira/browse/HADOOP-6986?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13176828#comment-13176828 ]
Harsh J commented on HADOOP-6986:
---------------------------------
Sorry to come in very late here, but could you rebase the patch onto the 0.23/trunk branches?
I think this is a good change, and +1 to the idea. I trust you've also covered all spots where we can tweak to also add in parse exceptions.
> SequenceFile.Reader should distinguish between Network IOE and Parsing IOE
> --------------------------------------------------------------------------
>
> Key: HADOOP-6986
> URL: https://issues.apache.org/jira/browse/HADOOP-6986
> Project: Hadoop Common
> Issue Type: Bug
> Components: io
> Affects Versions: 0.20-append, 0.21.1, 0.22.0
> Reporter: Nicolas Spiegelberg
> Priority: Minor
> Attachments: HADOOP-6986_0.21.patch, HADOOP-6986_20-append.patch
>
>
> The SequenceFile.Reader api should give the user an easy way to distinguish between a Network/Low-level IOE and a Parsing IOE. The use case appeared recently in the HBase project:
> Originally, if a RegionServer got an IOE from HDFS while opening a region file, it would abort the open and let the HMaster reassign the region. The assumption being that this is a network failure that will likely disappear at a later time or different partition of the network. However, if HBase gets parsing exceptions, we want to log the problem and continue opening the region anyways, because parsing is an idempotent problem and retries won't fix this issue.
> Although this problem was found in HBase, it seems to be a generic problem of being able to more easily identify idempotent vs transient errors.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira