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https://issues.apache.org/jira/browse/ACCUMULO-4574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15839952#comment-15839952
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Michael Wall commented on ACCUMULO-4574:
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Leaving this one in 1.8.1 after talking with [~etcoleman]
> Modify TableOperations online to check for table online before executing fate
> operation.
> ----------------------------------------------------------------------------------------
>
> Key: ACCUMULO-4574
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4574
> Project: Accumulo
> Issue Type: Improvement
> Affects Versions: 1.7.2
> Reporter: Ed Coleman
> Assignee: Ed Coleman
> Priority: Minor
> Fix For: 1.7.3, 1.8.1, 2.0.0
>
> Original Estimate: 24h
> Time Spent: 3h
> Remaining Estimate: 21h
>
> The table operations online operation executes as a fate operation. If a
> transaction lock for the table is currently held (say by table compactions)
> the online operation will block.
> This modification essentially changes the behavior of the online operation to
> a NOOP if the table is currently online. If the current table state is
> online, then the operation returns immediately without queuing a fate
> operation to set the online table to online. This eliminates the blocking
> behavior of the operation if the table is already online.
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