Prevent thread from being blocked by JDK-8 ConcurrentHashMap#computeIfAbsent() #2223
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…fAbsent() This is a workaround for JDK-8161372 mybatis#1929 https://groups.google.com/g/mybatis-user/c/iBTN98c0dP4/m/H6IJS-LzAQAJ We should drop this workaround once we drop Java 8 support or the fix is backported.
harawata
added
the
bug on dependency library
drtrang
reviewed
May 13, 2021
| if (value != null) { | ||
| return value; | ||
| } | ||
| return map.computeIfAbsent(key, mappingFunction::apply); |
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ComputeIfAbsent blocks when multiple threads obtain the same key. I think it's to improve performance. https://bugs.openjdk.java.net/browse/JDK-8161372
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This is a workaround for JDK-8161372.
Related to ...
We should drop this workaround once we drop Java 8 support (or the fix is backported).