Vladimir Ozerov created IGNITE-2513:
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Summary: Review ThreadLocal.remove() usages.
Key: IGNITE-2513
URL: https://issues.apache.org/jira/browse/IGNITE-2513
Project: Ignite
Issue Type: Sub-task
Components: general
Affects Versions: 1.5.0.final
Reporter: Vladimir Ozerov
Assignee: Vladimir Ozerov
Priority: Critical
Fix For: 1.6
*Problem*
We have lots scenarios when TL.set(...) is accompanied with TL.remove(). Once
TL entry is removed, next set(...) invocation will cause creation of new inner
entries, thus generating garbage.
*Solution*
Use TL.set(null) instead of TL.remove().
*CAUTION!* This applies only to static TLs and TLs on rarely created objects
(e.g. contexts). This optimization should not be applied to non-static TLs of
frequently created objects because it will lead to excessive grow of internal
TL map.
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