hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ivan Kelly (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1580) Add interface for generic Write Ahead Logging mechanisms
Date Wed, 30 Mar 2011 09:46:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13012898#comment-13012898

Ivan Kelly commented on HDFS-1580:

I'd like to keep the pluggable bit (JournalFactory, or JournalWriter&JournalReader) to
one interface for ease of configuration. Otherwise when a user specifies a custom journal
type in their configuration, they'll have to specify the class for the Writer and for the

The EditLogOutputStream i proposed won't coexist with the current EditLogOutputStream, it
will replace it. We need a single interface for writing the edit log, so that FSEditLog can
loop through all the streams and treat them the same.

I like the idea of TxnRecord.

> Add interface for generic Write Ahead Logging mechanisms
> --------------------------------------------------------
>                 Key: HDFS-1580
>                 URL: https://issues.apache.org/jira/browse/HDFS-1580
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ivan Kelly
>         Attachments: HDFS-1580+1521.diff, HDFS-1580.diff, generic_wal_iface.pdf, generic_wal_iface.pdf,
generic_wal_iface.pdf, generic_wal_iface.txt

This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

View raw message