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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:
---------------------------------
Attachment: HADOOP-2797.patch
Updated patch for Hudson. This has all the changes except for the changes to
hadoop-12-dfs-dir.txt and hadoop-12-dfs-dir.tgz required by
TestDFSUpgradeFromImage. All the Hudson tests except TestDFSUpgradeFromImage
should pass.
> One option would be to keep the existing test and ensure that it fails. This
> will test that if anybody tries to upgrade an old version, then the upgrade
> will fail.
In stead a new test case is added to TestDFSUpgrade.java that tests upgrade
from older version.
Once Hudson passes (except one test), the following extra steps are required to
commit :
- rename hadoop-12-dfs-dir.txt to hadoop-dfs-dir.txt
- delete hadoop-12-dfs-dir.tgz and add hadoop-dfs-dir.tgz (to be attached).
- apply the updated patch.
> 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
> Attachments: HADOOP-2797.patch, HADOOP-2797.patch, 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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