private void MergeTransactionsOnce()
{
var pendingOps = GetBufferForPendingOps();
using (_parent.DocumentsStorage.ContextPool.AllocateOperationContext(out DocumentsOperationContext context))
{
DocumentsTransaction tx = null;
try
{
try
{
tx = context.OpenWriteTransaction();
}
catch (Exception e)
{
if (_operations.TryDequeue(out MergedTransactionCommand command))
{
command.Exception = e;
DoCommandNotification(command);
}
return;
}
PendingOperations result;
try
{
var transactionMeter = TransactionPerformanceMetrics.MeterPerformanceRate();
try
{
result = ExecutePendingOperationsInTransaction(pendingOps, context, null, ref transactionMeter);
UpdateGlobalReplicationInfoBeforeCommit(context);
}
finally
{
transactionMeter.Dispose();
}
}
catch (Exception e)
{
if (_log.IsInfoEnabled)
{
_log.Info(
$"Failed to run merged transaction with {pendingOps.Count:#,#}, will retry independently",
e);
}
tx.Dispose();
NotifyTransactionFailureAndRerunIndependently(pendingOps, e);
return;
}
switch (result)
{
case PendingOperations.CompletedAll:
case PendingOperations.ModifiedSystemDocuments:
try
{
tx.Commit();
tx.Dispose();
}
catch (Exception e)
{
foreach (var op in pendingOps)
{
op.Exception = e;
}
}
finally
{
NotifyOnThreadPool(pendingOps);
}
return;
case PendingOperations.HasMore:
MergeTransactionsWithAsyncCommit(context, pendingOps);
return;
default:
Debug.Assert(false, "Should never happen");
return;
}
}
finally
{
tx?.Dispose();
}
}
}
private void MergeTransactionsOnce()
{
DocumentsOperationContext context = null;
IDisposable returnContext = null;
DocumentsTransaction tx = null;
try
{
var pendingOps = GetBufferForPendingOps();
returnContext = _parent.DocumentsStorage.ContextPool.AllocateOperationContext(out context);
{
try
{
_recording.State?.Record(context, TxInstruction.BeginTx);
tx = context.OpenWriteTransaction();
}
catch (Exception e)
{
try
{
if (_operations.TryDequeue(out MergedTransactionCommand command))
{
command.Exception = e;
DoCommandNotification(command);
}
return;
}
finally
{
if (tx != null)
{
_recording.State?.Record(context, TxInstruction.DisposeTx, tx.Disposed == false);
tx.Dispose();
}
}
}
PendingOperations result;
try
{
var transactionMeter = TransactionPerformanceMetrics.MeterPerformanceRate();
try
{
result = ExecutePendingOperationsInTransaction(pendingOps, context, null, ref transactionMeter);
UpdateGlobalReplicationInfoBeforeCommit(context);
}
finally
{
transactionMeter.Dispose();
}
}
catch (Exception e)
{
// need to dispose here since we are going to open new tx for each operation
if (tx != null)
{
_recording.State?.Record(context, TxInstruction.DisposeTx, tx.Disposed == false);
tx.Dispose();
}
if (e is HighDirtyMemoryException highDirtyMemoryException)
{
if (_log.IsInfoEnabled)
{
var errorMessage = $"{pendingOps.Count:#,#0} operations were cancelled because of high dirty memory, details: {highDirtyMemoryException.Message}";
_log.Info(errorMessage, highDirtyMemoryException);
}
NotifyHighDirtyMemoryFailure(pendingOps, highDirtyMemoryException);
}
else
{
if (_log.IsInfoEnabled)
{
_log.Info($"Failed to run merged transaction with {pendingOps.Count:#,#0}, will retry independently", e);
}
NotifyTransactionFailureAndRerunIndependently(pendingOps, e);
}
return;
}
switch (result)
{
case PendingOperations.CompletedAll:
try
{
tx.InnerTransaction.LowLevelTransaction.RetrieveCommitStats(out var stats);
_recording.State?.Record(context, TxInstruction.Commit);
tx.Commit();
SlowWriteNotification.Notify(stats, _parent);
_recording.State?.Record(context, TxInstruction.DisposeTx, tx.Disposed == false);
tx.Dispose();
}
catch (Exception e)
{
foreach (var op in pendingOps)
{
op.Exception = e;
}
}
finally
{
NotifyOnThreadPool(pendingOps);
}
return;
case PendingOperations.HasMore:
MergeTransactionsWithAsyncCommit(ref context, ref returnContext, pendingOps);
return;
default:
Debug.Assert(false, "Should never happen");
return;
}
}
}
finally
{
if (context?.Transaction != null)
{
using (_parent.DocumentsStorage.ContextPool.AllocateOperationContext(out DocumentsOperationContext ctx))
{
_recording.State?.Record(ctx, TxInstruction.DisposeTx, context.Transaction.Disposed == false);
}
context.Transaction.Dispose();
}
returnContext?.Dispose();
}
}