Vladimir Ozerov created IGNITE-2580:
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Summary: Investigate HashMap.Node[] allocations from
GridDhtTxPrepareFuture.readyLocks(Iterable)
Key: IGNITE-2580
URL: https://issues.apache.org/jira/browse/IGNITE-2580
Project: Ignite
Issue Type: Sub-task
Components: cache
Affects Versions: 1.5.0.final
Reporter: Vladimir Ozerov
Fix For: 1.6
*Problem*
GridDhtTxPrepareFuture is initialized with empty HashSet by default. When
single lock is ready HashSet.add() is called causing immediate expansion of
underlying HashMap table.
*Solution*
Do we really need fully-fledged hash set immediately? Probably we can optimize
for single-lock case so that HashSet is not needed at all.
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