Does the chunk of the System.Collections.Concurrent.Partitioner need to be thread safe?

Posted by Scott Chamberlain on Stack Overflow See other posts from Stack Overflow or by Scott Chamberlain
Published on 2010-06-01T02:37:27Z Indexed on 2010/06/01 2:43 UTC
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Filed under:

c#

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.net-4.0

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chunking

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parallel-foreach

I am working with the Parallel libraries in .net 4 and I am creating a Partitioner and the example shown in the MSDN only has a chunk size of 1 (every time a new result is retrieved it hits the data source instead of the local cache. The version I am writing will pull 10000 SQL rows at a time then feed the rows from the cache until it is empty then pull another batch.

Each partition in the Partitioner has its own chunk. I know every time I call to the IEnumerator in from the SQL data-source that needs to be thread safe but for use in a Parallel.ForEach do I need to make every call to the cache for the chunking thread safe?

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