Add progress logging and batch deletion for logs

After resolving duplicates the migration deleted all items in one silent
pass (per-id GetItemById plus a single DeleteItemsUnsafeFast), which looks
hung for minutes on large libraries. Delete in batches of 500 and log
progress per batch, which also avoids one oversized delete transaction.
This commit is contained in:
Joshua M. Boniface
2026-06-21 23:06:45 -04:00
parent 069eb40ebf
commit b60c535c84

View File

@@ -136,19 +136,38 @@ public class FixIncorrectOwnerIdRelationships : IAsyncMigrationRoutine
if (allIdsToDelete.Count > 0)
{
// Batch-resolve items for metadata path cleanup, then delete all at once
var itemsToDelete = allIdsToDelete
.Select(id => _libraryManager.GetItemById(id))
.Where(item => item is not null)
.ToList();
_libraryManager.DeleteItemsUnsafeFast(itemsToDelete!);
_logger.LogInformation("Deleting {Count} duplicate database entries...", allIdsToDelete.Count);
// Fall back to direct DB deletion for any items that couldn't be resolved via LibraryManager
var deletedIds = itemsToDelete.Select(i => i!.Id).ToHashSet();
var unresolvedIds = allIdsToDelete.Where(id => !deletedIds.Contains(id)).ToList();
if (unresolvedIds.Count > 0)
// Delete in batches so progress is visible (item resolution and deletion can take a
// long time on large libraries) and so we never issue one massive delete transaction.
const int deleteBatchSize = 500;
var deletedSoFar = 0;
for (var offset = 0; offset < allIdsToDelete.Count; offset += deleteBatchSize)
{
_persistenceService.DeleteItem(unresolvedIds);
cancellationToken.ThrowIfCancellationRequested();
var batchIds = allIdsToDelete.GetRange(offset, Math.Min(deleteBatchSize, allIdsToDelete.Count - offset));
// Resolve items for metadata path cleanup, then delete this batch
var itemsToDelete = batchIds
.Select(id => _libraryManager.GetItemById(id))
.Where(item => item is not null)
.ToList();
if (itemsToDelete.Count > 0)
{
_libraryManager.DeleteItemsUnsafeFast(itemsToDelete!);
}
// Fall back to direct DB deletion for any items that couldn't be resolved via LibraryManager
var deletedIds = itemsToDelete.Select(i => i!.Id).ToHashSet();
var unresolvedIds = batchIds.Where(id => !deletedIds.Contains(id)).ToList();
if (unresolvedIds.Count > 0)
{
_persistenceService.DeleteItem(unresolvedIds);
}
deletedSoFar += batchIds.Count;
_logger.LogInformation("Deleting duplicates: {Deleted}/{Total} items", deletedSoFar, allIdsToDelete.Count);
}
}