Hernan Romer created HBASE-29895:
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Summary: BackupBoundaries global coverage can allow premature WAL
deletion when backup roots have different host coverage
Key: HBASE-29895
URL: https://issues.apache.org/jira/browse/HBASE-29895
Project: HBase
Issue Type: Bug
Components: backup&restore
Reporter: Hernan Romer
BackupBoundaries is a global, cluster-level mechanism that aggregates WAL
cleanup boundaries from all backup roots. When different backup roots have
backed up different sets of hosts, the current implementation can allow
deletion of WAL files that may still be needed by some backup roots.
WALs should be protected if they might be needed by ANY backup root for future
incremental backups, even if another root has already backed up that host at a
later timestamp
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