private void HandleNestedValuesReduction(TransactionOperationContext indexContext, IndexingStatsScope stats,
CancellationToken token, MapReduceResultsStore modifiedStore,
IndexWriteOperation writer, LazyStringValue reduceKeyHash)
{
EnsureValidNestedValuesReductionStats(stats);
var numberOfEntriesToReduce = 0;
try
{
var section = modifiedStore.GetNestedResultsSection();
if (section.IsModified == false)
{
return;
}
using (_nestedValuesReductionStats.NestedValuesRead.Start())
{
numberOfEntriesToReduce += section.GetResults(indexContext, _aggregationBatch.Items);
}
stats.RecordReduceAttempts(numberOfEntriesToReduce);
AggregationResult result;
using (_nestedValuesReductionStats.NestedValuesAggregation.Start())
{
result = AggregateOn(_aggregationBatch.Items, indexContext, token);
}
if (section.IsNew == false)
{
writer.DeleteReduceResult(reduceKeyHash, stats);
}
foreach (var output in result.GetOutputs())
{
writer.IndexDocument(reduceKeyHash, output, stats, indexContext);
}
_index.ReducesPerSec.Mark(numberOfEntriesToReduce);
_metrics.MapReduceIndexes.ReducedPerSec.Mark(numberOfEntriesToReduce);
stats.RecordReduceSuccesses(numberOfEntriesToReduce);
}
catch (Exception e)
{
_index.HandleError(e);
var message = $"Failed to execute reduce function for reduce key '{reduceKeyHash}' on nested values of '{_indexDefinition.Name}' index.";
if (_logger.IsInfoEnabled)
{
_logger.Info(message, e);
}
stats.RecordReduceErrors(numberOfEntriesToReduce);
stats.AddReduceError(message + $" Exception: {e}");
}
}
private void HandleNestedValuesReduction(TransactionOperationContext indexContext, IndexingStatsScope stats,
MapReduceResultsStore modifiedStore,
IndexWriteOperation writer, LazyStringValue reduceKeyHash, CancellationToken token)
{
EnsureValidNestedValuesReductionStats(stats);
var numberOfEntriesToReduce = 0;
try
{
var section = modifiedStore.GetNestedResultsSection();
if (section.IsModified == false)
{
return;
}
using (_nestedValuesReductionStats.NestedValuesRead.Start())
{
numberOfEntriesToReduce += section.GetResults(indexContext, _aggregationBatch.Items);
}
stats.RecordReduceAttempts(numberOfEntriesToReduce);
AggregationResult result;
using (_nestedValuesReductionStats.NestedValuesAggregation.Start())
{
result = AggregateOn(_aggregationBatch.Items, indexContext, _nestedValuesReductionStats.NestedValuesAggregation, token);
}
if (section.IsNew == false)
{
writer.DeleteReduceResult(reduceKeyHash, stats);
}
foreach (var output in result.GetOutputs())
{
writer.IndexDocument(reduceKeyHash, output, stats, indexContext);
}
_index.ReducesPerSec.MarkSingleThreaded(numberOfEntriesToReduce);
_metrics.MapReduceIndexes.ReducedPerSec.Mark(numberOfEntriesToReduce);
stats.RecordReduceSuccesses(numberOfEntriesToReduce);
_index.UpdateThreadAllocations(indexContext, writer, stats, updateReduceStats: true);
}
catch (Exception e) when(e.IsIndexError())
{
_index.ErrorIndexIfCriticalException(e);
HandleReductionError(e, reduceKeyHash, writer, stats, updateStats: true, page: null, numberOfNestedValues: numberOfEntriesToReduce);
}
}