MSCRM Retrieve Multiple PlugIn limits the other Retrievemultiple uery - plugins

Question

In my scenario, there is a plugin (Retrieve Multiple) on Annotation. This plugin is nothing just a part of BLOB Storage solution(used for Attachment Management solution provided by Microsoft). So, it is clear that in our CRM, MicrosoftlLabsAzureBlobstorage is being used.
Now, I am executing a console app which retrieves multiple annotations through Query Expression. When it tries to fetch records around 500 or 600, it throws below error.
{The plug-in execution failed because no Sandbox Hosts are currently
available. Please check that you have a Sandbox server configured and
that it is running.\r\nSystem.ServiceModel.CommunicationException:
Microsoft Dynamics CRM has experienced an error. Reference number for
administrators or support: #AFF51A0F"}
When I fetch specific records or very less records, it executes fine.
So, I my question is that is there any limitation in number for Rerieve Multiple Query ? if retrievemultiple PlugIn exists ?
Is there any other clue that I am not able to find ?

Answer 1

To work around this conflict, in your console application code you may want to try retrieving smaller pages of annotations, say 50 at a time, and loop through the pages to process them all.
This article provides sample code for paging a QueryExpression.
Here's the abridged version of that sample:
// The number of records per page to retrieve.
int queryCount = 3;
// Initialize the page number.
int pageNumber = 1;
// Initialize the number of records.
int recordCount = 0;
// Create the query expression
QueryExpression pagequery = new QueryExpression();
pagequery.EntityName = "account";
pagequery.ColumnSet.AddColumns("name", "emailaddress1");
// Assign the pageinfo properties to the query expression.
pagequery.PageInfo = new PagingInfo();
pagequery.PageInfo.Count = queryCount;
pagequery.PageInfo.PageNumber = pageNumber;
// The current paging cookie. When retrieving the first page,
// pagingCookie should be null.
pagequery.PageInfo.PagingCookie = null;
while (true)
{
// Retrieve the page.
EntityCollection results = _serviceProxy.RetrieveMultiple(pagequery);
if (results.Entities != null)
{
// Retrieve all records from the result set.
foreach (Account acct in results.Entities)
{
Console.WriteLine("{0}.\t{1}\t{2}", ++recordCount, acct.Name,
acct.EMailAddress1);
}
}
// Check for more records, if it returns true.
if (results.MoreRecords)
{
// Increment the page number to retrieve the next page.
pagequery.PageInfo.PageNumber++;
// Set the paging cookie to the paging cookie returned from current results.
pagequery.PageInfo.PagingCookie = results.PagingCookie;
}
else
{
// If no more records are in the result nodes, exit the loop.
break;
}
}
This page has more info and another sample.