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https://issues.apache.org/jira/browse/HDFS-6673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14247834#comment-14247834
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Haohui Mai commented on HDFS-6673:
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I'm unsure why this requires sorting and LevelDB. Are there any particular use
case behind it? Since the delimited output depends heavily on the internal
implementation details of the fsimage, it makes more sense to just output
as-is, going through everything using O(1) space. Even sorting is a required,
using an external sorting tool like {{sort}} is much more efficient than
{{LevelDB}}.
On the other hand, I can see quite a bit of value of LevelDB-based output -- if
you really want to proceed this, maybe we can separate it into another jira?
> Add Delimited format supports for PB OIV tool
> ---------------------------------------------
>
> Key: HDFS-6673
> URL: https://issues.apache.org/jira/browse/HDFS-6673
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 2.4.0
> Reporter: Lei (Eddy) Xu
> Assignee: Lei (Eddy) Xu
> Priority: Minor
> Attachments: HDFS-6673.000.patch, HDFS-6673.001.patch,
> HDFS-6673.002.patch, HDFS-6673.003.patch
>
>
> The new oiv tool, which is designed for Protobuf fsimage, lacks a few
> features supported in the old {{oiv}} tool.
> This task adds supports of _Delimited_ processor to the oiv tool.
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