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https://issues.apache.org/jira/browse/HBASE-25549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhuoyue Huang updated HBASE-25549:
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    Summary: A new hbase shell command: 'alter_lazy'  (was: A new hbase shell 
command: 'lazy_alter')

> A new hbase shell command: 'alter_lazy'
> ---------------------------------------
>
>                 Key: HBASE-25549
>                 URL: https://issues.apache.org/jira/browse/HBASE-25549
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, shell
>    Affects Versions: 3.0.0-alpha-1
>            Reporter: Zhuoyue Huang
>            Assignee: Zhuoyue Huang
>            Priority: Major
>             Fix For: 3.0.0-alpha-1
>
>
> Under normal circumstances, modifying a table will cause all regions 
> belonging to the table to enter RIT. Imagine the following two scenarios:
>  # Someone entered the wrong configuration (e.g. negative 
> 'hbase.busy.wait.multiplier.max' value) when altering the table, causing 
> thousands of online regions to fail to open, leading to online accidents.
>  # Modify the configuration of a table, but this modification is not urgent, 
> the regions are not expected to enter RIT immediately.
> 'lazy_alter' is a new command to modify a table without reopening any online 
> regions except those regions were assigned by other threads or split etc.



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