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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1060) Append/flush should support concurrent "tailer" use case
Date Mon, 22 Mar 2010 02:41:27 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Todd Lipcon updated HDFS-1060:

    Attachment: hdfs-1060-tests.txt

Here are test cases for HDFS-1057 through HDFS-1059. All three fail pretty reliably for me.

> Append/flush should support concurrent "tailer" use case
> --------------------------------------------------------
>                 Key: HDFS-1060
>                 URL: https://issues.apache.org/jira/browse/HDFS-1060
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node, hdfs client
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Todd Lipcon
>         Attachments: hdfs-1060-tests.txt
> Several people have a usecase for a writer logging edits and using hflush() while one
or more readers "tails" the file by periodically reopening and seeking to get the latest bytes.
Currently there are several bugs. Using this ticket as a supertask for those bugs (and to
add test cases for this use case)

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