zosimer commented on issue #8106:
URL: https://github.com/apache/shardingsphere/issues/8106#issuecomment-724657929
> @zosimer Good news, the latest `5.0.0-alpha` version has been released
today, you can try it.
java.lang.NullPointerException: Can not get connection from datasource pr_ds.
at
com.google.common.base.Preconditions.checkNotNull(Preconditions.java:987)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.JDBCBackendDataSource.getConnections(JDBCBackendDataSource.java:80)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.JDBCBackendDataSource.getConnections(JDBCBackendDataSource.java:62)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.connection.BackendConnection.getConnectionsWithoutTransaction(BackendConnection.java:141)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.connection.BackendConnection.getConnections(BackendConnection.java:102)
at
org.apache.shardingsphere.infra.executor.sql.resourced.group.ResourceManagedExecuteGroupEngine.generateSQLExecuteGroups(ResourceManagedExecuteGroupEngine.java:66)
at
org.apache.shardingsphere.infra.executor.sql.group.AbstractExecuteGroupEngine.generate(AbstractExecuteGroupEngine.java:58)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.generateInputGroups(JDBCExecuteEngine.java:140)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.executeWithManagedResource(JDBCExecuteEngine.java:130)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:123)
**Here is the configuration fileļ¼**
schemaName: jiajia
dataSourceCommon:
username: root
password: ********
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 151
minPoolSize: 1
maintenanceIntervalMilliseconds: 30000
dataSources:
primary_ds:
url:
jdbc:mysql://172.16.192.57:3306/jiajia?serverTimezone=GMT%2B8&useSSL=false
replica_ds_0:
url:
jdbc:mysql://172.16.0.135:3306/jiajia?serverTimezone=GMT%2B8&useSSL=false
rules:
- !REPLICA_QUERY
dataSources:
pr_ds:
name: pr_ds
primaryDataSourceName: primary_ds
replicaDataSourceNames:
- replica_ds_0
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