Vladimir Rodionov created HBASE-15442: -----------------------------------------
Summary: HBase Backup Phase 2: Potential data loss and or data duplication in incremental backup Key: HBASE-15442 URL: https://issues.apache.org/jira/browse/HBASE-15442 Project: HBase Issue Type: Bug Reporter: Vladimir Rodionov Assignee: Vladimir Rodionov Priority: Critical Suppose we have two tables T1 and T2 # Create full backup T1 with backup id = B1 # Create full backup T2 backupId = B2 # New data arrived into file WAL1 # Create incremental backup of T1 with backupId = B3 # Create incremental backup of T2 with backupid = B4 The directory structure for backup site after this steps BACKUP_ROOT/WALs/B3 BACKUP_ROOT/WALs/B4 BACKUP_ROOT/T1/B1 BACKUP_ROOT/T2/B2 File WAL1 may end up either in BACKUP_ROOT/WALs/B3 or in both: BACKUP_ROOT/WALs/B3 and BACKUP_ROOT/WALs/B4 location. Both are bad: in first case we lose data for backup B4 in second case we have duplicate copies of WAL1 -- This message was sent by Atlassian JIRA (v6.3.4#6332)