Darrel Schneider created GEODE-1292:
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Summary: Investigate how FreeListManager.defragment handles chunks
larger than 2G
Key: GEODE-1292
URL: https://issues.apache.org/jira/browse/GEODE-1292
Project: Geode
Issue Type: Bug
Components: offheap
Reporter: Darrel Schneider
Currently the initial slabs of off-heap memory are always 2G or less in size.
But if we have two initial slabs that are contiguous in memory what would
prevent defragment from unifying them together into a single slab of 4G?
If it does this we are in trouble because the chunkSize is a 32-bit int and
will overflow.
Defragment needs to detect this and just create a chunk of 2G and then start a
new one. Or to prevent it from happening we could just check the incoming slabs
and throw away a few bytes to keep them from being contiguous.
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