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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2022/06/21 03:22:54 UTC
[GitHub] [shardingsphere] peilinqian opened a new issue, #18475: when use SQL excute 'close all' ,Showing unexpected results，Closing all cursor functions is not supported
peilinqian opened a new issue, #18475:
URL: https://github.com/apache/shardingsphere/issues/18475
## Bug Report
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### Which version of ShardingSphere did you use?
we find java version: java8, full_version=1.8.0_282
ShardingSphere-5.1.2-SNAPSHOT
Commit ID: https://github.com/apache/shardingsphere/commit/952c1feacb26bc03ea4ea14d9f82b0d5777732c2
Commit Message: Update shasum arguments in Release documents (https://github.com/apache/shardingsphere/pull/18344)
Branch: master
Build time: 2022-06-13T19:07:26+0000
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
ShardingSphere-Proxy
### Expected behavior
successfully closed
### Actual behavior
Failed to close
```
sharding_db=> close all;
ERROR: java.lang.NullPointerException
```
```
[ERROR] 2022-06-21 11:18:28.841 [Connection-1151-ThreadExecutor] o.a.s.p.f.c.CommandExecutorTask - Exception occur:
java.lang.NullPointerException: null
at org.apache.shardingsphere.proxy.backend.text.data.impl.SchemaAssignedDatabaseBackendHandler.prepareCursorStatementContext(SchemaAssignedDatabaseBackendHandler.java:94)
at org.apache.shardingsphere.proxy.backend.text.data.impl.SchemaAssignedDatabaseBackendHandler.prepareDatabaseCommunicationEngine(SchemaAssignedDatabaseBackendHandler.java:88)
at org.apache.shardingsphere.proxy.backend.text.data.impl.SchemaAssignedDatabaseBackendHandler.execute(SchemaAssignedDatabaseBackendHandler.java:62)
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)
```
### Reason analyze (If you can)
### Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc.
```
drop table if exists cur_test_01;
create table cur_test_01(c_id int,c_num int,c_name varchar(10),c_city varchar(10),c_add varchar(20));
insert into cur_test_01 values(1,18,'Allen','Beijing','AAAAABAAAAA'),(2,368,'Bob','Shanghai','AAAAACAAAAA'),
(3,59,'Cathy','Shenzhen','AAAAADAAAAA'),(4,96,'David','Suzhou','AAAAAEAAAAA'),
(5,17,'Edrwd','Fenghuang','AAAAAFAAAAA'),(6,253,'Fendi','Changsha','AAAAAGAAAAA');
start transaction;
cursor cursor1 for select * from cur_test_01 order by 1;
cursor cursor2 for select * from cur_test_01 where c_id >=5 order by 1;
fetch forward from cursor1;
fetch forward from cursor2;
close all;
end;
```
### Example codes for reproduce this issue (such as a github link).
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[GitHub] [shardingsphere] tristaZero closed issue #18475: Closing all cursor functions is not supported，When use SQL excute 'close all' ,Showing unexpected results
Posted by GitBox <gi...@apache.org>.
tristaZero closed issue #18475: Closing all cursor functions is not supported，When use SQL excute 'close all' ,Showing unexpected results
URL: https://github.com/apache/shardingsphere/issues/18475
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