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https://issues.apache.org/jira/browse/HADOOP-6708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857621#action_12857621
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Aaron Kimball commented on HADOOP-6708:
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I don't think that works in this scenario. Suppose I have a record that is 8 GB
long; I read the first kilobyte or two out of the record, then intend to
discard the rest and start with the next record.
If we have a chunk size of 1 MB, then skipping through this will require 8000
seeks, or ~64000 milliseconds. Even upping this chunk size drastically to 100
MB means a 640 ms delay.
> New file format for very large records
> --------------------------------------
>
> Key: HADOOP-6708
> URL: https://issues.apache.org/jira/browse/HADOOP-6708
> Project: Hadoop Common
> Issue Type: New Feature
> Components: io
> Reporter: Aaron Kimball
> Assignee: Aaron Kimball
> Attachments: lobfile.pdf
>
>
> A file format that handles multi-gigabyte records efficiently, with lazy disk
> access
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