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https://issues.apache.org/jira/browse/HBASE-20683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16503100#comment-16503100
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Peter Somogyi commented on HBASE-20683:
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bq. I wonder if the return value should be int: the number of incompatibilities
(0 means pass).
It doesn't make much difference and the value might be useful later on. I'll
make this change.
> Incorrect return value for PreUpgradeValidator
> ----------------------------------------------
>
> Key: HBASE-20683
> URL: https://issues.apache.org/jira/browse/HBASE-20683
> Project: HBase
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.1.0, 2.0.1
> Reporter: Peter Somogyi
> Assignee: Peter Somogyi
> Priority: Critical
> Attachments: HBASE-20683.master.001.patch
>
>
> PreUpgradeValidator currently returns 1 when there is no incompatibilities.
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