Username is case-insensitive in login authentication but case-sensitive in hbase metadata
org.apache.kylin.common.persistence.WriteConflictException: Overwriting conflict /user/Admin, expect old TS 1536031295060, but it is 0 org.apache.kylin.storage.hbase.HBaseResourceStore.checkAndPutResourceImpl(HBaseResourceStore.java:325) org.apache.kylin.common.persistence.ResourceStore.checkAndPutResourceCheckpoint(ResourceStore.java:323) org.apache.kylin.common.persistence.ResourceStore.putResource(ResourceStore.java:308) org.apache.kylin.common.persistence.ResourceStore.putResource(ResourceStore.java:287) org.apache.kylin.metadata.cachesync.CachedCrudAssist.save(CachedCrudAssist.java:192) org.apache.kylin.rest.security.KylinUserManager.update(KylinUserManager.java:122) org.apache.kylin.rest.service.KylinUserService.updateUser(KylinUserService.java:85) org.apache.kylin.rest.security.KylinAuthenticationProvider.authenticate(KylinAuthenticationProvider.java:117) org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:174) org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:199) org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:180) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
This bug will be fixed in kylin 2.5.1, which is about to release.
Please refer to this: https://github.com/apache/kylin/pull/235 If you are using the older version, you can run the following command to bypass this issue.
$KYLIN_HOME/bin/metastore.sh remove /user
I hope that will help you!