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https://issues.apache.org/jira/browse/HBASE-25970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Somogyi reopened HBASE-25970:
-----------------------------------
Reopening for branch-2 and branch-2.5 backports.
> MOB data loss - incorrect concatenation of MOB_FILE_REFS
> ---------------------------------------------------------
>
> Key: HBASE-25970
> URL: https://issues.apache.org/jira/browse/HBASE-25970
> Project: HBase
> Issue Type: Bug
> Components: mob
> Affects Versions: 3.0.0-alpha-1
> Reporter: Peter Somogyi
> Assignee: Peter Somogyi
> Priority: Critical
> Fix For: 3.0.0-alpha-1
>
>
> Active MOB files can be deleted by MobFileCleanerChore. The MOB_FILE_REFS are
> wrongly concatenated when multiple files or tables are stored. During the MOB
> cleanup HBase wants to keep the incorrectly concatenated file and considers
> the real file as deletable.
> {noformat}
> 2021-06-03 15:03:09,876 TRACE
> org.apache.hadoop.hbase.mob.MobFileCleanerChore: Specific mob references
> found for
> store=hdfs://c1377-node2.coelab.cloudera.com:8020/hbase/data/default/IntegrationTestIngestWithMOB/1df6561244ecc434f505501e6bda9af0/test_cf/2956445a41184488b914e93199df905a
> :
> {IntegrationTestIngestWithMOB=[d41d8cd98f00b204e9800998ecf8427e20210603a6c8c0e5bf8548649b0009b156452c21_1df6561244ecc434f505501e6bda9af0d41d8cd98f00b204e9800998ecf8427e20210603497714eabbe5418c9d52382a4808e986_1df6561244ecc434f505501e6bda9af0,
>
> d41d8cd98f00b204e9800998ecf8427e202106037464cbddc86943a1bad77d52a3bd412c_1df6561244ecc434f505501e6bda9af0]}
>
> ...
> 2021-06-03 15:03:10,208 TRACE
> org.apache.hadoop.hbase.mob.MobFileCleanerChore: Archiving MOB file
> hdfs://c1377-node2.coelab.cloudera.com:8020/hbase/mobdir/data/default/IntegrationTestIngestWithMOB/e9b5d936e7f55a4f1c3246a8d5ce53c2/test_cf/d41d8cd98f00b204e9800998ecf8427e20210603497714eabbe5418c9d52382a4808e986_1df6561244ecc434f505501e6bda9af0
> creation time=1622729860319
> 2021-06-03 15:03:10,467 DEBUG
> org.apache.hadoop.hbase.mob.MobFileCleanerChore: MOB Cleaner is archiving:
> hdfs://c1377-node2.coelab.cloudera.com:8020/hbase/mobdir/data/default/IntegrationTestIngestWithMOB/e9b5d936e7f55a4f1c3246a8d5ce53c2/test_cf/d41d8cd98f00b204e9800998ecf8427e20210603497714eabbe5418c9d52382a4808e986_1df6561244ecc434f505501e6bda9af0
> {noformat}
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