Denis Magda created IGNITE-3090:
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Summary: Memory leak in IgniteH2Indexing prepared statements cache
Key: IGNITE-3090
URL: https://issues.apache.org/jira/browse/IGNITE-3090
Project: Ignite
Issue Type: Bug
Affects Versions: 1.5.0.final
Reporter: Denis Magda
Fix For: 1.6
IgniteH2Indexing caches prepared statements in {{stmtCache}} that uses Threads
as keys. Under they high load when there are many Threads the cache can grow
significantly. Plus if a Thread is terminated its prepared statements are not
get cleaned introducing a memory leak.
A special background Thread should be introduced that will iterate over
{{stmCache}} performing the following:
- cleaning records for terminated Threads;
- cleaning records of the Threads that were not used for a long time. A special
configuration parameter can be set.
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