Alexei Scherbakov created IGNITE-4655:
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Summary: Reduce heap usage on exchange.
Key: IGNITE-4655
URL: https://issues.apache.org/jira/browse/IGNITE-4655
Project: Ignite
Issue Type: Bug
Components: cache
Affects Versions: 1.6
Reporter: Alexei Scherbakov
Priority: Critical
Fix For: 1.9
Recently I've debugged heap overgrowth during an exchange on configuration with
large amount of caches.
I found several problems:
* GridDhtPartitionsExchangeFuture.msgs field is not cleared after exchange.
Easy fix.
* GridDhtPartitionsSingleMessage.partCntrsBytes is serialized as object and
takes large amount of heap.Could be fixed by implementing more efficient
serialization.
* BinaryMemoryAllocatorChunk heap buffer is not shrinked during exchange due to
large message size. WIth 128 threads in sys pool it may take up to 7G of heap
on exchange process(I observer 52M message size). This could be fixed by
reducing max exchange message size.
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