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https://issues.apache.org/jira/browse/HBASE-16392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16031939#comment-16031939
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Vladimir Rodionov edited comment on HBASE-16392 at 5/31/17 9:22 PM:
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That is not feasible. Will require rewriting partially BackupAdminImpl and
adding additional methods to this class exclusively for testing.
The existing unit test does the following
# Full backup of table T
# Snapshot of backup system table - S
# Delete backup T
# Restore backup system from S
# Verify that we have 1 backup in history
# Manual modification of backup system table to emulate failed delete operation
- adding delete row with list of backup ids
# Runs repair tool
# Verifies that we have 0 backup sessions in a history
was (Author: vrodionov):
OK
> Backup delete fault tolerance
> -----------------------------
>
> Key: HBASE-16392
> URL: https://issues.apache.org/jira/browse/HBASE-16392
> Project: HBase
> Issue Type: Sub-task
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Labels: backup
> Fix For: 2.0.0
>
> Attachments: HBASE-16392-v1.patch, HBASE-16392-v2.patch
>
>
> Backup delete modified file system and backup system table. We have to make
> sure that operation is atomic, durable and isolated.
> Delete operation:
> # Start backup session (this guarantees) that system will be blocked for all
> backup commands during delete operation
> # Save list of tables being deleted to system table
> # Before delete operation we take backup system table snapshot
> # During delete operation we detect any failures and restore backup system
> table from snapshot, then finish backup session
> # To guarantee consistency of the data, delete operation MUST be repeated
> # We guarantee that all file delete operations are idempotent, can be
> repeated multiple times
> # Any backup operations will be blocked until consistency is restored
> # To restore consistency, repair command must be executed.
> # Repair command checks if there is failed delete op in a backup system
> table, and repeats delete operation
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