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https://issues.apache.org/jira/browse/HBASE-24273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17100895#comment-17100895
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Hudson commented on HBASE-24273:
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Results for branch branch-2.3
[build #68 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2.3/68/]:
(/) *{color:green}+1 overall{color}*
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details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2.3/68/General_20Nightly_20Build_20Report/]
(/) {color:green}+1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2.3/68/JDK8_20Nightly_20Build_20Report_20_28Hadoop2_29/]
(/) {color:green}+1 jdk8 hadoop3 checks{color}
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report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2.3/68/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk11 hadoop3 checks{color}
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(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> HBCK's "Orphan Regions on FileSystem" reports regions with referenced HFiles
> ----------------------------------------------------------------------------
>
> Key: HBASE-24273
> URL: https://issues.apache.org/jira/browse/HBASE-24273
> Project: HBase
> Issue Type: Bug
> Components: hbck2
> Affects Versions: 2.2.4
> Environment: HBase 2.2.4
> Hadoop 3.1.3
> Reporter: Andrey Elenskiy
> Priority: Critical
> Fix For: 3.0.0-alpha-1, 2.3.0
>
>
> This issue came up after merging regions. MergeTableRegionsProcedure removes
> the parent regions from hbase:meta and creates HFile references in child
> region to the old parent regions. Running `hbck_chore_run` right after the
> `merge_region` will show the parent regions in "Orphan Regions on FileSystem"
> until major compaction is run on child region which will remove HFile
> references and cause Catalog Janitor to clean up the parent regions.
> There are probably other situations which can cause the same issue (maybe
> region split?)
> Having "Orphan Regions on FileSystem" list parent regions and suggest to
> "_hbase completebulkload_" is dangerous in this case as completing bulk load
> will lead to stale HFile references in child region which will cause its OPEN
> to fail because referenced HFile doesn't exist.
> Figuring out these things for database administrators is tedious, so I think
> it would be reasonable to not consider regions with referenced HFiles to be
> orphans (or maybe could give an extra hint saying that it has referenced
> HFiles).
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