分布式引擎 DBException

Question

我在我的本地系统中创建了一个 table： CREATE TABLE default.test_distributed (a Int8) ENGINE = Distributed(logs, default, test_remote)

并在 IP 为 10.121.21.33 的远程系统中创建了一个 table：创建 table test_remote (一个 Int8) Engine=Log

然后我在本地系统中插入数据：插入 test_distributed 值 (1011)

然后我触发了 Select 查询： select * 来自 test_distributed

并出现以下异常： 2017.05.02 18:49:36.155606 [ 14 ] ConnectionPoolWithFailover：尝试 1 时连接失败，原因：代码：210，e.displayText() = DB::NetException：连接被拒绝：(10.121.21.33: 9000), e.what() = DB::NetException 2017.05.02 18:49:36.155982 [ 14 ] ConnectionPoolWithFailover：尝试 2 时连接失败，原因：代码：210，e.displayText() = DB::NetException：连接被拒绝：(10.121.21.33: 9000), e.what() = DB::NetException 2017.05.02 18:49:36.156316 [ 14 ] ConnectionPoolWithFailover：尝试 3 时连接失败，原因：代码：210，e.displayText() = DB::NetException：连接被拒绝：(10.121.21.33: 9000), e.what() = DB::NetException 2017.05.02 18:49:36.162780 [ 4 ] executeQuery：代码：279，e.displayText() = DB::NetException：所有连接尝试均失败。日志：

代码：210，e.displayText() = DB::NetException：连接被拒绝：(10.121.21.33:9000)，e.what() = DB::NetException 代码：210，e.displayText() = DB::NetException：连接被拒绝：(10.121.21.33:9000)，e.what() = DB::NetException 代码：210，e.displayText() = DB::NetException：连接被拒绝：(10.121.21.33:9000)，e.what() = DB::NetException

, e.what() = DB::NetException (from 127.0.0.1:33590) (in query: select * from test_distributed), Stack trace:

clickhouse 服务器（StackTrace::StackTrace()+0x16）[0x17c6e76]
clickhouse-server(DB::Exception::Exception(std::string const&, int)+0x1f) [0xfdd9ff]
clickhouse-server(PoolWithFailoverBase::getMany(DB::Settings const*, PoolMode)+0x773) [0x17615f3]
clickhouse-server(DB::ConnectionPoolWithFailover::doGetMany(DB::Settings const*, PoolMode)+0x33) [0x17617f3]
clickhouse-server(DB::MultiplexedConnections::initFromShard(DB::IConnectionPool*)+0x26d) [0x19afcad]
clickhouse-server(DB::MultiplexedConnections::MultiplexedConnections(DB::IConnectionPool*, DB::Settings const*, std::shared_ptr, bool, PoolMode)+0x138) [0x19b0a38]
clickhouse-server(DB::RemoteBlockInputStream::createMultiplexedConnections()+0x3fb) [0x1665e8b]
clickhouse-server(DB::RemoteBlockInputStream::readPrefix()+0x23) [0x166b043]
clickhouse-server(DB::AsynchronousBlockInputStream::calculate(MemoryTracker*)+0x60) [0xfe8ea0]
clickhouse-server(ThreadPool::worker()+0x141) [0x17d2d91]
clickhouse-server() [0x33d4faf]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x8182) [0x7f8fe38aa182]
/lib/x86_64-linux-gnu/libc.so.6(克隆+0x6d) [0x7f8fe2ec530d]

Answer 1

检查本地系统的设置

SELECT * FROM system.clusters

并检查以下文件 /etc/clickhouse-server/config.xml 的 remote_servers 部分

请参阅 https://clickhouse.yandex/reference_en.html#Distributed 了解 remote_servers 示例配置

分布式引擎 DBException

Distributed Engine DBException

clickhouse