Ilya Kasnacheev created IGNITE-11558:
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Summary: Developer warning when HashMap is passed to putAll()
Key: IGNITE-11558
URL: https://issues.apache.org/jira/browse/IGNITE-11558
Project: Ignite
Issue Type: Improvement
Components: cache
Affects Versions: 2.7
Reporter: Ilya Kasnacheev
Currently when HashMap is passed to putAll it's very easy to cause deadlock
since the order of keys is not stable.
This is a pity because users will use HashMap by default and not expect any
trouble.
We should issue a warning when user passes HashMap (but not LinkedHashMap) to
putAll(). On .Net we should probably check for Dictionary. Warning similar to
the one issues when index cannot be efficiently inlined.
Another approach is to turn keys into binary form and then sort them, if map is
not a SortedMap.
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