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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2022/04/12 04:48:40 UTC
[GitHub] [shardingsphere] strongduanmu opened a new issue, #16757: NullPointerException occurs when connect ShardingSphere-Proxy with mysql
strongduanmu opened a new issue, #16757:
URL: https://github.com/apache/shardingsphere/issues/16757
## Bug Report
### Which version of ShardingSphere did you use?
https://github.com/apache/shardingsphere/commit/93db6243cb43555921688f51869a0426fbb87a72
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
ShardingSphere-Proxy
### Expected behavior
Connect ShardingSphere-Proxy with mysql successully.
### Actual behavior
```
[INFO ] 2022-04-12 12:45:55.112 [main] o.a.s.p.frontend.ShardingSphereProxy - ShardingSphere-Proxy Cluster mode started successfully
[INFO ] 2022-04-12 12:46:02.537 [ShardingSphere-Command-0] ShardingSphere-SQL - Logic SQL: select @@version_comment limit 1
[INFO ] 2022-04-12 12:46:02.537 [ShardingSphere-Command-0] ShardingSphere-SQL - SQLStatement: MySQLSelectStatement(table=Optional.empty, limit=Optional[org.apache.shardingsphere.sql.parser.sql.common.segment.dml.pagination.limit.LimitSegment@7c5ce8d9], lock=Optional.empty, window=Optional.empty)
[INFO ] 2022-04-12 12:46:02.537 [ShardingSphere-Command-0] ShardingSphere-SQL - Actual SQL: slave_0 ::: select @@version_comment limit 1
[ERROR] 2022-04-12 12:46:04.219 [ShardingSphere-Command-0] o.a.s.p.f.c.CommandExecutorTask - Exception occur:
java.lang.NullPointerException: null
at org.apache.shardingsphere.proxy.backend.response.header.query.QueryHeaderBuilderFactory.newInstance(QueryHeaderBuilderFactory.java:44)
at org.apache.shardingsphere.proxy.backend.response.header.query.QueryHeaderBuilderEngine.build(QueryHeaderBuilderEngine.java:55)
at org.apache.shardingsphere.proxy.backend.text.admin.DatabaseAdminQueryBackendHandler.createResponseHeader(DatabaseAdminQueryBackendHandler.java:71)
at org.apache.shardingsphere.proxy.backend.text.admin.DatabaseAdminQueryBackendHandler.execute(DatabaseAdminQueryBackendHandler.java:61)
at org.apache.shardingsphere.proxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.execute(MySQLComQueryPacketExecutor.java:97)
at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:107)
at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:77)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[INFO ] 2022-04-12 12:46:20.159 [_finished_check_Worker-1] o.a.c.f.imps.CuratorFrameworkImpl - Starting
[INFO ] 2022-04-12 12:46:20.160 [_finished_check_Worker-1] org.apache.zookeeper.ZooKeeper - Initiating client connection, connectString=localhost:2181 sessionTimeout=60000 watcher=org.apache.curator.ConnectionState@746de858
```
### Reason analyze (If you can)
### Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc.
### Example codes for reproduce this issue (such as a github link).
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[GitHub] [shardingsphere] tuichenchuxin closed issue #16757: NullPointerException occurs when connect ShardingSphere-Proxy with mysql
Posted by GitBox <gi...@apache.org>.
tuichenchuxin closed issue #16757: NullPointerException occurs when connect ShardingSphere-Proxy with mysql
URL: https://github.com/apache/shardingsphere/issues/16757
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