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How we can remove millions of entities from a Windows Azure Table (part 1)

Part 2
Windows Azure Table is a great please to persist different information. We can store in the same table thousands of thousands of thousands of thousands of items. This sounds so good, but we can have small problems. The first problem that we can face up is how we can delete all the content of a table very fast.
The maximum number of items that we can update/delete in a batch is 100 entities. Because of this deleting 1 million of entities will take a long of time. We could try to parallelize this action, but this is a little complicated and maybe we don’t want to do this.
Another solution that we could use is to delete this table and recreate it. If you need to drop all the content from a table this is faster than delete entity by entity. Think in this way. When you need to remove the content of the text file, it is faster to delete row by row or to delete the file and recreate it.
CloudTableClient tableStorage = new CloudTableClient(
bool wasRecreated = false;
while (!wasRecreated)
    wasRecreated = true;
  catch (StorageClientException storageClientException)
    if (!(storageClientException.ErrorCode == StorageErrorCode.ResourceAlreadyExists
                        && storageClientException.StatusCode == HttpStatusCode.Conflict))
When we call the delete method, even is a sync or an async method the table will be mark for deletion. The real delete action will be in background and you don’t have any kind of possibility to be notified. When you try to recreate the table and the delete action is still in progress, a StorageClientException will be throwing when the error code will be set to “ResourceAlreadyExist” and the status code will be set to “Conflict”.
Usually this kind of action will take for around 40s. depends on the load of the servers. The problem with this solution is with the time interval while the table is deleted. In this period of time clients will not be able to access this table and they need to handle this expectation.  This can be accepted in some situations.
We saw a solution to delete the content of a table that have millions of entities. What do you think? Do you see a better solution?
Part 2


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