zjcnb opened a new issue #13736:
URL: https://github.com/apache/shardingsphere/issues/13736
### Which version of ShardingSphere did you use?
`master`
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
`ShardingSphere-Proxy`
### Expected behavior
alter READWRITE_SPLITTING rule successful.
### Actual behavior
```
java.lang.NullPointerException: null
at
org.apache.shardingsphere.readwritesplitting.distsql.parser.core.ReadwriteSplittingDistSQLStatementVisitor.visitReadwriteSplittingRuleDefinition(ReadwriteSplittingDistSQLStatementVisitor.java:97)
at
org.apache.shardingsphere.readwritesplitting.distsql.parser.core.ReadwriteSplittingDistSQLStatementVisitor.visitReadwriteSplittingRuleDefinition(ReadwriteSplittingDistSQLStatementVisitor.java:60)
at
org.apache.shardingsphere.distsql.parser.autogen.ReadwriteSplittingDistSQLStatementParser$ReadwriteSplittingRuleDefinitionContext.accept(ReadwriteSplittingDistSQLStatementParser.java:918)
at
org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visit(AbstractParseTreeVisitor.java:18)
at
org.apache.shardingsphere.readwritesplitting.distsql.parser.core.ReadwriteSplittingDistSQLStatementVisitor.lambda$visitAlterReadwriteSplittingRule$1(ReadwriteSplittingDistSQLStatementVisitor.java:69)
at
java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at
java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at
java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at
org.apache.shardingsphere.readwritesplitting.distsql.parser.core.ReadwriteSplittingDistSQLStatementVisitor.visitAlterReadwriteSplittingRule(ReadwriteSplittingDistSQLStatementVisitor.java:69)
at
org.apache.shardingsphere.readwritesplitting.distsql.parser.core.ReadwriteSplittingDistSQLStatementVisitor.visitAlterReadwriteSplittingRule(ReadwriteSplittingDistSQLStatementVisitor.java:60)
at
org.apache.shardingsphere.distsql.parser.autogen.ReadwriteSplittingDistSQLStatementParser$AlterReadwriteSplittingRuleContext.accept(ReadwriteSplittingDistSQLStatementParser.java:778)
at
org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visit(AbstractParseTreeVisitor.java:18)
at
org.apache.shardingsphere.distsql.parser.core.featured.FeaturedDistSQLStatementParserEngine.getSQLStatement(FeaturedDistSQLStatementParserEngine.java:77)
at
org.apache.shardingsphere.distsql.parser.core.featured.FeaturedDistSQLStatementParserEngine.parse(FeaturedDistSQLStatementParserEngine.java:56)
at
org.apache.shardingsphere.distsql.parser.engine.api.DistSQLStatementParserEngine.parse(DistSQLStatementParserEngine.java:43)
at
org.apache.shardingsphere.infra.parser.ShardingSphereSQLParserEngine.parse0(ShardingSphereSQLParserEngine.java:74)
at
org.apache.shardingsphere.infra.parser.ShardingSphereSQLParserEngine.parse(ShardingSphereSQLParserEngine.java:59)
at
org.apache.shardingsphere.proxy.backend.text.TextProtocolBackendHandlerFactory.newInstance(TextProtocolBackendHandlerFactory.java:82)
at
org.apache.shardingsphere.proxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.<init>(MySQLComQueryPacketExecutor.java:55)
at
org.apache.shardingsphere.proxy.frontend.mysql.command.MySQLCommandExecutorFactory.newInstance(MySQLCommandExecutorFactory.java:73)
at
org.apache.shardingsphere.proxy.frontend.mysql.command.MySQLCommandExecuteEngine.getCommandExecutor(MySQLCommandExecuteEngine.java:60)
at
org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:97)
at
org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:72)
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)
```
`DistSQL: `
```
ALTER READWRITE_SPLITTING RULE readwrite_splitting_db (
WRITE_RESOURCE=write_ds,
READ_RESOURCES(read_ds_0)
);
```
`Configuration:`
```
schemaName: readwrite_splitting_db
dataSources:
write_ds:
url:
jdbc:mysql://127.0.0.1:13306/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 50
minPoolSize: 1
read_ds_0:
url:
jdbc:mysql://127.0.0.1:13307/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 50
minPoolSize: 1
read_ds_1:
url:
jdbc:mysql://127.0.0.1:13308/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 50
minPoolSize: 1
rules:
- !READWRITE_SPLITTING
dataSources:
pr_ds:
writeDataSourceName: write_ds
readDataSourceNames:
- read_ds_0
- read_ds_1
```
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