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https://issues.apache.org/jira/browse/HBASE-29662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18115897#comment-18115897
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Hudson commented on HBASE-29662:
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Results for branch branch-2.5
[build #137 on
builds.a.o|https://ci-hbase.apache.org/job/HBase-Integration-Test/job/branch-2.5/137/]:
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details (if available):
(/) {color:green}+1 client integration test for 2.10.2 {color}
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> Reading data via TableSnapshotInputFormat should fail instead of reading no
> data if restore directory got deleted
> ------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-29662
> URL: https://issues.apache.org/jira/browse/HBASE-29662
> Project: HBase
> Issue Type: Bug
> Components: snapshots
> Reporter: Ujjawal Kumar
> Assignee: Prathyusha
> Priority: Critical
> Labels: pull-request-available
> Fix For: 3.0.0, 3.0.0-beta-2, 2.6.4, 2.5.13
>
>
> We observed an issue in our production where data read via
> TableSnapshotInputFormat was empty even though the snapshot had actual data.
> The sequence of events look like this :
> 1. Snapshot was restored into a temp directory via
> RestoreSnapshotHelper.copySnapshotForScanner (via
> TableMapReduceUtil.initTableSnapshotMapperJob) as part of job submission
> 2. The temp directory was deleted by another process
> 3. Within mapper, HRegion were created on top of temp directory.
> HRegionFileSystem#checkRegionInfoOnFilesystem was called to check regioninfo,
> *it didn't find region level directory and recreated an empty one !*
> Due to this, the MR job didn't read any data but was considered successful.
> *The correct behavior would be to ensure that mapper fails if temp directory
> doesn't exist*
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