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https://issues.apache.org/jira/browse/HDFS-11188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang updated HDFS-11188:
-------------------------------
Attachment: HDFS-11188.001.patch
Patch attached. I grepped the java sources for "3.0.0" and found these tests
which I ran locally (passed):
{noformat}
-> % mvn test -Dtest=TestDatanodeRegistration,TestDatanodeRegister,TestPBHelper
{noformat}
> Change min supported DN and NN versions back to 2.x
> ---------------------------------------------------
>
> Key: HDFS-11188
> URL: https://issues.apache.org/jira/browse/HDFS-11188
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: rolling upgrades
> Affects Versions: 3.0.0-alpha1
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Priority: Critical
> Attachments: HDFS-11188.001.patch
>
>
> This is the inverse of HDFS-10398 and HADOOP-13142. Currently, trunk requires
> a software DN and NN version of 3.0.0-alpha1. This means we cannot perform a
> rolling upgrade from 2.x to 3.x.
> The first step towards supporting rolling upgrade is changing these back to a
> 2.x version. For reference, branch-2 has these versions set to "2.1.0-beta".
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