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From "James Clampffer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9103) Retry reads on DN failure
Date Fri, 13 Nov 2015 16:31:11 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

James Clampffer updated HDFS-9103:
    Attachment: HDFS-9103.HDFS-8707.009.patch

New patch:
-Addessed [~bobthansen]'s concerns about test coverage and API
-got rid of the little GC pass for expired nodes, we can wait and see if that ever becomes
a real problem
-Got rid of the optional_node_rule default parameter in AsyncPreadSome, just pass in nullptr
if you don't want to use it.

> Retry reads on DN failure
> -------------------------
>                 Key: HDFS-9103
>                 URL: https://issues.apache.org/jira/browse/HDFS-9103
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client
>            Reporter: Bob Hansen
>            Assignee: James Clampffer
>             Fix For: HDFS-8707
>         Attachments: HDFS-9103.1.patch, HDFS-9103.2.patch, HDFS-9103.HDFS-8707.006.patch,
HDFS-9103.HDFS-8707.007.patch, HDFS-9103.HDFS-8707.008.patch, HDFS-9103.HDFS-8707.009.patch,
HDFS-9103.HDFS-8707.3.patch, HDFS-9103.HDFS-8707.4.patch, HDFS-9103.HDFS-8707.5.patch
> When AsyncPreadSome fails, add the failed DataNode to the excluded list and try again.

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