[
https://issues.apache.org/jira/browse/HDFS-1923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044646#comment-13044646
]
Todd Lipcon commented on HDFS-1923:
-----------------------------------
Hey Nicholas. Those semantics are kind of surprising to me. As I remember the
motivation for the feature, the idea is to reduce the likelihood that a
long-running pipeline completely fails. Given that, it seems preferable to
continue with 2 or 1 replicas in the pipeline if there are no more nodes left
in the cluster, rather than fail if it can't recruit a new one.
That is to say, if you had a 4-node cluster with the feature enabled, it's
actually going to have pipeline failures more often with the feature enabled
than with the feature disabled, statistically speaking.
That said, that's a separate question than this patch. So, if you believe the
feature is working as designed, then +1.
> Intermittent recurring failure in TestFiDataTransferProtocol2.pipeline_Fi_29
> ----------------------------------------------------------------------------
>
> Key: HDFS-1923
> URL: https://issues.apache.org/jira/browse/HDFS-1923
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: test
> Reporter: Matt Foley
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h1923_20110527.patch
>
>
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
