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https://issues.apache.org/jira/browse/HDFS-234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270658#comment-13270658
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Todd Lipcon commented on HDFS-234:
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Uma: I'm a little concerned about having this as a main part of our 2.0
release, to be honest. There hasn't been activity and the only activity I've
seen around it has been from Ivan. Is anyone committed to actually QAing and
running this code? A lot of the other features around HA don't integrate with
it, it isn't documented, etc. Maybe we should start a discussion on the list.
> Integration with BookKeeper logging system
> ------------------------------------------
>
> Key: HDFS-234
> URL: https://issues.apache.org/jira/browse/HDFS-234
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Luca Telloli
> Assignee: Ivan Kelly
> Fix For: 3.0.0
>
> Attachments: HADOOP-5189-trunk-preview.patch,
> HADOOP-5189-trunk-preview.patch, HADOOP-5189-trunk-preview.patch,
> HADOOP-5189-v.19.patch, HADOOP-5189.patch, HDFS-234-branch-2.patch,
> HDFS-234.diff, HDFS-234.diff, HDFS-234.diff, HDFS-234.diff, HDFS-234.diff,
> HDFS-234.patch, create.png, hdfs_tpt_lat.pdf, zookeeper-dev-bookkeeper.jar,
> zookeeper-dev.jar
>
>
> BookKeeper is a system to reliably log streams of records
> (https://issues.apache.org/jira/browse/ZOOKEEPER-276). The NameNode is a
> natural target for such a system for being the metadata repository of the
> entire file system for HDFS.
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