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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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Robert Chansler updated HADOOP-2797:
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Release Note: Withdrew the upgrade-to-CRC facility. 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, 0.17) version before doing upgrade to version 0.18 or later. (was: 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, 0.17) version before upgrade to 0.18 or later.)
> 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: 0.18.0
>
> Attachments: hadoop-14-dfs-dir.tgz, HADOOP-2797.patch,
> 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, 0.17) version before upgrade to 0.18 or later.
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