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[release/6.0] Use custom error message when running out of syncblocks - #60592
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update message Co-authored-by: Jan Kotas <jkotas@microsoft.com>
ghost
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Oct 18, 2021
I couldn't figure out the best area label to add to this PR. If you have write-permissions please help me learn by adding exactly one area label. |
mangod9
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Oct 18, 2021
jeffschwMSFT
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Oct 18, 2021
jeffschwMSFT
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Approved. We should consider this for .NET 6
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Backport of #60013 to release/6.0
/cc @jkotas
Customer Impact
Improves diagnosability of OutOfMemory exception occurring with a plenty of free memory available in certain situation.
For historic reasons, the runtime throws OutOfMemoryException when it reaches implementation limitations for maximum number of syncblocks. This special OutOfMemoryException is hard to diagnose since it is indistinguishable from ordinary OutOfMemory exception. In #49215, it took more than 6 months to root cause this situation. It is likely that other customers are running into same issue, but they do not have patience to work for that long to diagnose it. The improved error message should make it possible to diagnose the problem within minutes.
Testing
Ad-hoc testing of the effected path.
Risk
Low. Change in error message only.