protected override BoolResult SaveCheckpointCore(OperationContext context, AbsolutePath checkpointDirectory)
{
try
{
if (IsStoredEpochInvalid(out var storedEpoch))
{
SetGlobalEntry(nameof(GlobalKeys.StoredEpoch), _configuration.Epoch);
Tracer.Info(context.TracingContext, $"Updated stored epoch from '{storedEpoch}' to '{_configuration.Epoch}'.");
}
var targetDirectory = checkpointDirectory.ToString();
Tracer.Info(context.TracingContext, $"Saving content location database checkpoint to '{targetDirectory}'.");
if (Directory.Exists(targetDirectory))
{
FileUtilities.DeleteDirectoryContents(targetDirectory, deleteRootDirectory: true);
}
return(_keyValueStore.Use(store => store.SaveCheckpoint(targetDirectory)).ToBoolResult());
}
catch (Exception ex) when(ex.IsRecoverableIoException())
{
return(new BoolResult(ex, "Save checkpoint failed."));
}
}
private void FullRangeCompaction(OperationContext context)
{
if (ShutdownStarted)
{
return;
}
context.PerformOperation(Tracer, () =>
_keyValueStore.Use(store =>
{
foreach (var columnFamilyName in new[] { "default", nameof(Columns.ClusterState), nameof(Columns.Metadata) })
{
if (context.Token.IsCancellationRequested)
{
break;
}
var result = context.PerformOperation(Tracer, () =>
{
store.CompactRange((byte[])null, null, columnFamilyName: columnFamilyName);
return(BoolResult.Success);
}, messageFactory: _ => $"ColumnFamily={columnFamilyName}");
if (!result.Succeeded)
{
break;
}
}
}).ToBoolResult()).IgnoreFailure();
if (!ShutdownStarted)
{
lock (TimerChangeLock)
{
// No try-catch required here.
_compactionTimer?.Change(_configuration.FullRangeCompactionInterval, Timeout.InfiniteTimeSpan);
}
}
}
/// <inheritdoc />
protected override BoolResult SaveCheckpointCore(OperationContext context, AbsolutePath checkpointDirectory)
{
try
{
var targetDirectory = checkpointDirectory.ToString();
Tracer.Info(context.TracingContext, $"Saving content location database checkpoint to '{targetDirectory}'.");
if (Directory.Exists(targetDirectory))
{
FileUtilities.DeleteDirectoryContents(targetDirectory, deleteRootDirectory: true);
}
return(_keyValueStore.Use(store => store.SaveCheckpoint(targetDirectory)).ToBoolResult());
}
catch (Exception ex) when(ex.IsRecoverableIoException())
{
return(new BoolResult(ex, "Save checkpoint failed."));
}
}
