昨天,我从Hive创建了我的第一个数据源Druid。今天,我不确定这是否行得通..。 首先,我运行以下代码来创建我的数据库: SET hive.druid.broker.address.default = 10.20.173.30:8082;
SET hive.druid.metadata.username = druid;
SET hive.druid.metadata.password = druid_password;
SET hive.druid.metadata.db.type = postgresql;
SET hive.druid.metadata.uri = jdbc:pos
我得到了NullPointerException on DruidDataSource.getConnectionInternal(DruidDataSource.java:1704)?
下面是完整的堆栈跟踪。你能帮我理解这个问题吗?
Caused by: org.apache.ibatis.exceptions.PersistenceException:
### Error updating database. Cause: java.lang.NullPointerException
### The error may exist in com/byai/line/dal/mapper/
当我启动我的spring boot应用程序时,它显示以下错误:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
这是我的数据源配置:
spring.datasource.type = com.alibaba.druid.pool.DruidDataSource
## master
spring.datasource.druid.illidan.master.name = primary_db
sp
我刚接触druid并尝试通过本地文件加载数据。我已经设置了节点和zookeeper实例。我已经在Ubuntu18.04中尝试过,并且工作正常,但是我尝试在lUbuntu中使用它,我看到了下面的错误:
2018-07-30T12:25:03,390 ERROR [main] io.druid.cli.CliPeon - Error when starting up. Failing.
com.google.inject.ProvisionException: Unable to provision, see the following errors:
1) Error in custom p
我试图运行超过500 K数据限制的groupBy查询。我得到了这个错误。
{
"error": "Resource limit exceeded",
"errorMessage": "Not enough dictionary space to execute this query. Try increasing druid.query.groupBy.maxMergingDictionarySize or enable disk spilling by setting druid.query.groupBy.maxOnD