Lock occurs when heavy traffic ------------------------------ Key: IBATIS-508 URL: https://issues.apache.org/jira/browse/IBATIS-508 Project: iBatis for Java Issue Type: Bug Components: DAO Affects Versions: 2.3.0 Environment: all platform Reporter: Takayuki Ikeda Priority: Minor
In heavy traffic , lock occurs at com.ibatis.common.beans.ClassInfo#getInstance in case of cacheEnabled = true. It seems to be happend because of "double synchronized" ClassInfo.java --- private static final Map CLASS_INFO_MAP = Collections.synchronizedMap(new HashMap()); public static ClassInfo getInstance(Class clazz) { if (cacheEnabled) { synchronized (clazz) { --- I think we get more concurrency to access getInstance if the synchronized clause in getInstance method is deleted. There is no side-effect to do this. #just created several useless ClassInfo objects :-) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.