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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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Nigel Daley updated HADOOP-2797:
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Description: 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. (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) version before upgrade to
0.17 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
> 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, 0.17) version before upgrade to 0.18 or later.
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