Commits on May 24, 2023

1. Add error when chunkSize is greater than the strict memory limit of t… …

   …he CacheLimiter.
   
   Scenario:
   
       export AZCOPY_BUFFER_GB=5
       # Copy a single 5GB file to an Azure Blob Storage Container with a block size of 4000MB
       ./acopy [...] --block-size-mb=4000 [...]
   
   Since the chunk size in that case is greater than the strict memory limit (75% of 5GB)
   this would end up in a deadlock: CacheLimiter.TryAdd would loop forever, waiting for memory
   to be freed (which it never will).
   
   This patch tries to remedy that by making it an error if a chunk is greater than the strict
   memory limit of the associated CacheLimiter.

   

   mkrautz committed May 24, 2023
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