rmdmattingly commented on code in PR #5868:
URL: https://github.com/apache/hbase/pull/5868#discussion_r1608525945
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hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/impl/BackupManager.java:
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@@ -295,51 +298,31 @@ public ArrayList<BackupImage> getAncestors(BackupInfo
backupInfo) throws IOExcep
.withRootDir(backup.getBackupRootDir()).withTableList(backup.getTableNames())
.withStartTime(backup.getStartTs()).withCompleteTime(backup.getCompleteTs()).build();
- // Only direct ancestors for a backup are required and not entire
history of backup for this
- // table resulting in verifying all of the previous backups which is
unnecessary and backup
- // paths need not be valid beyond the lifetime of a backup.
- //
- // RootDir is way of grouping a single backup including one full and
many incremental backups
+ // If the image has a different rootDir, it cannot be an ancestor.
if (!image.getRootDir().equals(backupInfo.getBackupRootDir())) {
continue;
}
- // add the full backup image as an ancestor until the last incremental
backup
- if (backup.getType().equals(BackupType.FULL)) {
- // check the backup image coverage, if previous image could be covered
by the newer ones,
- // then no need to add
- if (!BackupManifest.canCoverImage(ancestors, image)) {
- ancestors.add(image);
- }
+ // The ancestors consist of the most recent FULL backups that cover the
list of tables
+ // required in the new backup and all INCREMENTAL backups that came
after one of those FULL
+ // backups.
+ if (backup.getType().equals(BackupType.INCREMENTAL)) {
Review Comment:
I'll take a look today to see if I can give reproducible steps. Separately,
+1 to the ancestry calculation improvements here — regardless of whether we
support table specific ancestry trees, I've been playing around with this
changeset vs 2.6 today and observed the several bug fixes that you've
implemented here (stopping at the appropriate full backup, no more recursion
issues when calculating ancestors' ancestors)
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