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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2022/06/08 03:23:08 UTC
[GitHub] [shardingsphere] strongduanmu opened a new issue, #18234: NoSuchElementException occurs when execute `PREVIEW FETCH 2 FROM "t_order_cursor"`
strongduanmu opened a new issue, #18234:
URL: https://github.com/apache/shardingsphere/issues/18234
## Bug Report
### Which version of ShardingSphere did you use?
https://github.com/apache/shardingsphere/commit/72b683cc3d431452b0e645f5bfcfa2f9480e65f2
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
ShardingSphere-Proxy
### Expected behavior
Show preview result of `PREVIEW FETCH 2 FROM "t_order_cursor"` statement.
### Actual behavior
```
[ERROR] 2022-06-08 10:09:57.017 [Connection-7-ThreadExecutor] o.a.s.p.f.c.CommandExecutorTask - Exception occur:
java.util.NoSuchElementException: null
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1447)
at java.util.HashMap$KeyIterator.next(HashMap.java:1469)
at org.apache.shardingsphere.sharding.route.engine.type.ShardingRouteEngineFactory.getDDLRoutingEngine(ShardingRouteEngineFactory.java:124)
at org.apache.shardingsphere.sharding.route.engine.type.ShardingRouteEngineFactory.newInstance(ShardingRouteEngineFactory.java:94)
at org.apache.shardingsphere.sharding.route.engine.ShardingSQLRouter.createRouteContext(ShardingSQLRouter.java:57)
at org.apache.shardingsphere.sharding.route.engine.ShardingSQLRouter.createRouteContext(ShardingSQLRouter.java:45)
at org.apache.shardingsphere.infra.route.engine.impl.PartialSQLRouteExecutor.route(PartialSQLRouteExecutor.java:68)
at org.apache.shardingsphere.infra.route.engine.SQLRouteEngine.route(SQLRouteEngine.java:53)
at org.apache.shardingsphere.infra.context.kernel.KernelProcessor.route(KernelProcessor.java:54)
at org.apache.shardingsphere.infra.context.kernel.KernelProcessor.generateExecutionContext(KernelProcessor.java:46)
at org.apache.shardingsphere.proxy.backend.text.distsql.ral.advanced.PreviewDistSQLBackendHandler.getRows(PreviewDistSQLBackendHandler.java:115)
at org.apache.shardingsphere.proxy.backend.text.distsql.ral.QueryableRALBackendHandler.handle(QueryableRALBackendHandler.java:49)
at org.apache.shardingsphere.proxy.backend.text.distsql.ral.RALBackendHandler.execute(RALBackendHandler.java:47)
at org.apache.shardingsphere.proxy.frontend.opengauss.command.query.simple.OpenGaussComQueryExecutor.execute(OpenGaussComQueryExecutor.java:76)
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 ] 2022-06-08 10:20:25.112 [HikariPool-4 connection adder] o.o.core.v3.ConnectionFactoryImpl - [2bc6ae6a-8910-4009-b353-b2b961cbb53c] Try to connect. IP: localhost:15432
[INFO ] 2022-06-08 10:20:25.137 [HikariPool-4 connection adder] o.o.core.v3.ConnectionFactoryImpl - [127.0.0.1:53892/ocalhost/127.0.0.1:15432] Connection is established. ID: 2bc6ae6a-8910-4009-b353-b2b961cbb53c
```
### 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 #18234: NoSuchElementException occurs when execute `PREVIEW FETCH 2 FROM "t_order_cursor"`
Posted by GitBox <gi...@apache.org>.
tuichenchuxin closed issue #18234: NoSuchElementException occurs when execute `PREVIEW FETCH 2 FROM "t_order_cursor"`
URL: https://github.com/apache/shardingsphere/issues/18234
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