public virtual (bool MoreWorkFound, Index.CanContinueBatchResult BatchContinuationResult) Execute(QueryOperationContext queryContext, TransactionOperationContext indexContext,
Lazy <IndexWriteOperation> writeOperation, IndexingStatsScope stats, CancellationToken token)
{
const long pageSize = long.MaxValue;
var maxTimeForDocumentTransactionToRemainOpen = Debugger.IsAttached == false
? _configuration.MaxTimeForDocumentTransactionToRemainOpen.AsTimeSpan
: TimeSpan.FromMinutes(15);
var moreWorkFound = false;
var batchContinuationResult = Index.CanContinueBatchResult.None;
var totalProcessedCount = 0;
foreach (var collection in _index.Collections)
{
using (var collectionStats = stats.For("Collection_" + collection))
{
var lastMappedEtag = _indexStorage.ReadLastIndexedEtag(indexContext.Transaction, collection);
var lastTombstoneEtag = _indexStorage.ReadLastProcessedTombstoneEtag(indexContext.Transaction, collection);
if (_logger.IsInfoEnabled)
{
_logger.Info($"Executing cleanup for '{_index} ({_index.Name})'. Collection: {collection}. LastMappedEtag: {lastMappedEtag:#,#;;0}. LastTombstoneEtag: {lastTombstoneEtag:#,#;;0}.");
}
var inMemoryStats = _index.GetStats(collection);
var lastEtag = lastTombstoneEtag;
var count = 0;
var sw = new Stopwatch();
var keepRunning = true;
var lastCollectionEtag = -1L;
while (keepRunning)
{
var hasChanges = false;
using (queryContext.OpenReadTransaction())
{
sw.Restart();
if (lastCollectionEtag == -1)
{
lastCollectionEtag = _index.GetLastTombstoneEtagInCollection(queryContext, collection);
}
var tombstones = collection == Constants.Documents.Collections.AllDocumentsCollection
? _documentsStorage.GetTombstonesFrom(queryContext.Documents, lastEtag + 1, 0, pageSize)
: _documentsStorage.GetTombstonesFrom(queryContext.Documents, collection, lastEtag + 1, 0, pageSize);
foreach (var tombstone in tombstones)
{
token.ThrowIfCancellationRequested();
count++;
totalProcessedCount++;
hasChanges = true;
lastEtag = tombstone.Etag;
inMemoryStats.UpdateLastEtag(lastEtag, isTombstone: true);
if (_logger.IsInfoEnabled && totalProcessedCount % 2048 == 0)
{
_logger.Info($"Executing cleanup for '{_index.Name}'. Processed count: {totalProcessedCount:#,#;;0} etag: {lastEtag}.");
}
if (tombstone.Type != Tombstone.TombstoneType.Document)
{
continue; // this can happen when we have '@all_docs'
}
_index.HandleDelete(tombstone, collection, writeOperation, indexContext, collectionStats);
stats.RecordTombstoneDeleteSuccess();
var parameters = new CanContinueBatchParameters(stats, IndexingWorkType.Cleanup, queryContext, indexContext, writeOperation, lastEtag,
lastCollectionEtag,
totalProcessedCount, sw);
batchContinuationResult = _index.CanContinueBatch(in parameters, ref maxTimeForDocumentTransactionToRemainOpen);
if (batchContinuationResult != Index.CanContinueBatchResult.True)
{
keepRunning = batchContinuationResult == Index.CanContinueBatchResult.RenewTransaction;
break;
}
}
if (hasChanges == false)
{
break;
}
}
}
if (count == 0)
{
continue;
}
if (_logger.IsInfoEnabled)
{
_logger.Info($"Executing cleanup for '{_index} ({_index.Name})'. Processed {count} tombstones in '{collection}' collection in {collectionStats.Duration.TotalMilliseconds:#,#;;0} ms.");
}
if (_index.Type.IsMap())
{
_indexStorage.WriteLastTombstoneEtag(indexContext.Transaction, collection, lastEtag);
}
else
{
_mapReduceContext.ProcessedTombstoneEtags[collection] = lastEtag;
}
moreWorkFound = true;
}
}
return(moreWorkFound, batchContinuationResult);
}
