Issue:
Race condition in TransactionLog.cs, TransactionLog's c'tor, between the File.Exists(...) call and the new FileInfo(_options.FileName).Length statement. A file can be deleted in between leading to an exception later.
What steps will reproduce the problem?
Set V2 options with "CreateFile = CreatePolicy.Always"
Add via something like (note the using usage)
public void Add(MyEntity newItem)
{
// Open the BPlusTree using these options
using (var bpt = new BPlusTree<string, KeyEntity>(_options))
{
bpt.Add(newItem.key, newItem.Value);
}
}
Add about 100K entities in rapid fire via the Add(MyEntity newItem) call.
There is a 1% error chance (on a high performance SSD) so by the 100th of so addition, you'll hit the race condition.
What is the expected output? What do you see instead?
See above
What version of the product are you using? On what operating system?
Tip of HG repo
Please provide any additional information below.
Not specific to this issue but at a project level, it would be nice if you had a forum or something where user's of this library could talk about uses/features/bugs. For example: A cool idea would be extending the storage to use Azure Blob Storage (in Page mode). Likely extending/replicating off the BTreeFileStoreV2 class. A forum could facilitate this sort of a discussion. Or perhaps having a multi master write model (extending on that azure thought).
csharptest
commented
9 years ago
Issue: Race condition in TransactionLog.cs, TransactionLog's c'tor, between the
File.Exists(...)call and thenew FileInfo(_options.FileName).Lengthstatement. A file can be deleted in between leading to an exception later.What steps will reproduce the problem?
usingusage)There is a 1% error chance (on a high performance SSD) so by the 100th of so addition, you'll hit the race condition.
What is the expected output? What do you see instead?
What version of the product are you using? On what operating system?
Please provide any additional information below.
BTreeFileStoreV2class. A forum could facilitate this sort of a discussion. Or perhaps having a multi master write model (extending on that azure thought).