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Hudson commented on HBASE-28064:
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Results for branch branch-2
        [build #916 on 
builds.a.o|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/916/]: 
(x) *{color:red}-1 overall{color}*
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details (if available):

(x) {color:red}-1 general checks{color}
-- For more information [see general 
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/916/General_20Nightly_20Build_20Report/]


(x) {color:red}-1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2) 
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/916/JDK8_20Nightly_20Build_20Report_20_28Hadoop2_29/]


(x) {color:red}-1 jdk8 hadoop3 checks{color}
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report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/916/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/]


(x) {color:red}-1 jdk11 hadoop3 checks{color}
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report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/916/JDK11_20Nightly_20Build_20Report_20_28Hadoop3_29/]


(/) {color:green}+1 source release artifact{color}
-- See build output for details.


(/) {color:green}+1 client integration test{color}


> Implement truncate_region command to truncate region directly from FS
> ---------------------------------------------------------------------
>
>                 Key: HBASE-28064
>                 URL: https://issues.apache.org/jira/browse/HBASE-28064
>             Project: HBase
>          Issue Type: New Feature
>          Components: Admin, shell
>    Affects Versions: 3.0.0-alpha-4, 2.5.6, 4.0.0-alpha-1
>            Reporter: Ankit Singhal
>            Assignee: Vaibhav Joshi
>            Priority: Major
>             Fix For: 2.6.0, 3.0.0-beta-1, 4.0.0-alpha-1
>
>
> One of our users has brought up a use-case where they need to truncate a 
> region to delete data within a specific range. There are two scenarios to 
> consider:
> * In the first scenario, the region boundaries involve a time range defined 
> through pre-splitting, and user is looking to efficiently clean old date 
> data. If HBase can directly truncate the region from the file system and then 
> the user can merge the empty region with adjacent regions to effectively 
> eliminate it which will be more optimized compared to deleting the data using 
> Delete API.
> * In another case, if the HFile for that region becomes corrupted for some 
> reason, user want to get rid of the HFile and reload the entire region to 
> avoid consistency issues and ensure performance.
> we can do this by taking the region offline and taking write lock to avoid 
> the consideration of race conditions involving Region In Transition (RITs), 
> region re-opening, and merge/split scenarios. 



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