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https://issues.apache.org/jira/browse/HADOOP-2797?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi updated HADOOP-2797:
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Attachment: HADOOP-2797.patch
Suggested patch is attached. Note that that this is the first time Hadoop has a
notion of versions that are not supported for upgraded. So there are a few
non-trivial changes in "version upgrade" layer..
This does everything except changing {{hadoop-12-dfs-dir.tgz}}. This image will
be upgraded to {{hadoop-14-dfs-dir.tgz}}. So TestDFSUpgradeFromImage fails.
> Withdraw CRC upgrade from HDFS
> ------------------------------
>
> Key: HADOOP-2797
> URL: https://issues.apache.org/jira/browse/HADOOP-2797
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Affects Versions: 0.13.0
> Reporter: Robert Chansler
> Assignee: Raghu Angadi
> Priority: Critical
> Fix For: 0.17.0
>
> Attachments: HADOOP-2797.patch
>
>
> HDFS will no longer support upgrades from versions without CRCs for block
> data. Users upgrading from version 0.13 or earlier must first upgrade to an
> intermediate (0.14, 0.15, 0.16) version before upgrade to 0.17 or later.
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