Hi, Case-insensitive issue has been fixed in jira KYLIN-3531. https://issues.apache.org/jira/browse/KYLIN-3531 ------------------ Best Regards, Chao Long
------------------ Original ------------------ From: "mailpig"<alex...@163.com>; Date: Fri, Jan 11, 2019 11:22 AM To: "dev"<dev@kylin.apache.org>; Subject: User login failed when user name case mix I want to upgrade to kylin-2.4 from kylin-2.1. For some reason, We has two user, named vip and VIP. After upgrade, We found that user VIP can't login. However, login with vip is ok. The error stack is below: org.apache.kylin.common.persistence.WriteConflictException: Overwriting conflict /user/VIP, expect old TS 1547174500042, but it is 1547175263057 at org.apache.kylin.storage.hbase.HBaseResourceStore.checkAndPutResourceImpl(HBaseResourceStore.java:325) at org.apache.kylin.common.persistence.ResourceStore.checkAndPutResourceCheckpoint(ResourceStore.java:318) at org.apache.kylin.common.persistence.ResourceStore.putResource(ResourceStore.java:303) at org.apache.kylin.common.persistence.ResourceStore.putResource(ResourceStore.java:282) at org.apache.kylin.metadata.cachesync.CachedCrudAssist.save(CachedCrudAssist.java:192) at org.apache.kylin.rest.security.KylinUserManager.update(KylinUserManager.java:122) After check the source code in kylin-2.4.0, When user login, kylin will check timestamp in hbase. The timestamp will be cached in KylinUserManager.userMap which type is CaseInsensitiveStringCache<ManagerUser>. CaseInsensitiveStringCache use ConcurrentSkipListMap to store data and CASE_INSENSITIVE_ORDER is chosen as comparator. When loading user info after startup, VIP's timestamp will be overwrite with vip. So VIP will never login success. It might be a bug or should notify users that they should only use uppercase username or lowercase username but not case mix. -- Sent from: http://apache-kylin.74782.x6.nabble.com/