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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-6522) Expose locks and leases to Coprocessors
Date Fri, 31 Aug 2012 05:15:09 GMT

     [ https://issues.apache.org/jira/browse/HBASE-6522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lars Hofhansl updated HBASE-6522:
---------------------------------

    Issue Type: Improvement  (was: Bug)
    
> Expose locks and leases to Coprocessors
> ---------------------------------------
>
>                 Key: HBASE-6522
>                 URL: https://issues.apache.org/jira/browse/HBASE-6522
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.96.0, 0.94.2
>
>         Attachments: 6522.txt, 6522-v2.txt
>
>
> Currently it is not possible for CP to implement any of checkAndMutate type operations,
because coprocessor have no way create a lock, because getLock is private HRegion (interestingly
ReleaseLock is public).
> In addition it would nice if Coprocessor could hook into the RegionServers' Lease management.
> Here I propose two trivial changes:
> # Make HRegion.getLock public
> # Add {code}Leases getLeases(){code} to RegionServerServices (and hence to HRegionServer)

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