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Distributed SQL transaction & query engine for data sharding, scaling, encryption, and more - on any database.
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shardingjdbc5.0+springboot+oracle:start occured a error 'table or view does not exist',username is dirrerent with table schema #10419

Closed PaleWhiteDot closed 3 months ago

PaleWhiteDot commented 3 years ago

Version information

springBoot：2.1.4.RELEASE shardingSphere：5.0.0-alpha database： oracle

Which project did you use? Sharding-JDBC or Sharding-Proxy?

Sharding-JDBC

config

props:
  sql-show: true

dataSources:

  ds0: !!com.zaxxer.hikari.HikariDataSource
    driverClassName: oracle.jdbc.driver.OracleDriver
    jdbcUrl: jdbc:oracle:thin:@//******/message
    username: MSG_CONNECT
    password: *******

  ds1: !!com.zaxxer.hikari.HikariDataSource
    driverClassName: oracle.jdbc.driver.OracleDriver
    jdbcUrl: jdbc:oracle:thin:@//******/message
    username: MSG_CONNECT
    password: ******

rules:
  - !SHARDING
    tables:
      END_ADDR:
        actualDataNodes: ds$->{0..1}.END_ADDR1
        databaseStrategy:
          standard:
            shardingColumn: CHNL_TYPE
            shardingAlgorithmName: database-inline
      MESSAGE:
        actualDataNodes: ds$->{0..1}.MESSAGE1
        databaseStrategy:
          standard:
            shardingColumn: CHNL_TYPE
            shardingAlgorithmName: database-inline
    shardingAlgorithms:
      database-inline:
        type: SHARDING_MESSAGE
        props:
          algorithm-class-name: com.cmb.sharding.shardAlgorithm.CustomerShardingAlgorithm

Description

my oracle username is MSG_CONNECT,oracle table is in schema MSG.i known shardingjdbc cannot surppot schema,so i set synonyms in oracle.But when i start up my application that i got the error 'table or views does not exist'.i review the code and found the follow code in class ShardingMetaDataLoader.load()

boolean isCheckingMetaData = props.getValue(ConfigurationPropertyKey.CHECK_TABLE_METADATA_ENABLED);
        int maxConnectionsSizePerQuery = props.getValue(ConfigurationPropertyKey.MAX_CONNECTIONS_SIZE_PER_QUERY);
        TableRule tableRule = rule.getTableRule(tableName);
        if (!isCheckingMetaData) {
            DataNode dataNode = dataNodes.getDataNodes(tableName).iterator().next();
            return PhysicalTableMetaDataLoader.load(dataSourceMap.get(dataNode.getDataSourceName()), dataNode.getTableName(), databaseType);
        }

it according isCheckingMetaData to check PhysicalTableMetaData. i think it check PhysicalTableMetaData from default schema 'MSG_CONNECT',but my table is in schema 'MSG',so it throw a error 'table or views does not exist'. And then i add the setting 'check-table-metadata-enabled=true',it does not check PhysicalTableMetaData any more.but the next method parallelLoadTables() will invoke same method of PhysicalTableMetaDataLoader.load() method,but it is according to future.So at last i will get the same error 'table or views does not exist' or somethimes time out.

How can i deal with it? i'm trying to set hikari param schema=msg,connectionInitSql=alter session set current_schema=msg,but it doesn't work. If shardingjdbc don't check table exist when i start my application, i think i will run it because i set the synonyms in oracle.

strongduanmu commented 3 years ago

@PaleWhiteDot Thank you very much for your feedback. I will investigate this issue later.

chenxk commented 3 years ago

Me too !!!

database: Oracle
exception: Failed to instantiate [org.apache.shardingsphere.shardingjdbc.spring.datasource.SpringShardingDataSource]: Constructor threw exception; nested exception is java.sql.SQLException: ORA-00942: 表或视图不存在

Oracle table is in schema A， but read tables from schema B。 It took a whole afternoon to debug source codes , then i find shardingsphere read wrong tables.

Please help me !

@PaleWhiteDot Thank you very much for your feedback. I will investigate this issue later.

chenxk commented 3 years ago

Me too !!!

database: Oracle exception: Failed to instantiate [org.apache.shardingsphere.shardingjdbc.spring.datasource.SpringShardingDataSource]: Constructor threw exception; nested exception is java.sql.SQLException: ORA-00942: 表或视图不存在

Oracle table is in schema A， but read tables from schema B。 It took a whole afternoon to debug source codes , then i find shardingsphere read wrong tables.

Please help me !

@PaleWhiteDot Thank you very much for your feedback. I will investigate this issue later.

shardingsphere version : 4.1.1 spring version: 4.1.3-release

strongduanmu commented 3 years ago

@PaleWhiteDot @chenxk I have tried to reproduce this problem, but failed. Can you provide steps to reproduce this exception?

PaleWhiteDot commented 3 years ago

@PaleWhiteDot @chenxk I have tried to reproduce this problem, but failed. Can you provide steps to reproduce this exception?

I found where the question is? In this method:PhysicalIndexMetaDataLoader.load(final Connection connection, final String table), will invoke connection.getSchema() and then will invoke the instance MetaDataConnectionAdapter.getSchema()

public String getSchema() {
        return DatabaseMetaDataDialectHandlerFactory.findHandler(databaseType).map(handler -> handler.getSchema(connection)).orElse(getSchema(connection));
    }

handle.getSchema(connection) like this（in this method OracleDatabaseMetaDataDialectHandler.getSchema()）

@Override
    public String getSchema(final Connection connection) {
        try {
            return Optional.ofNullable(connection.getMetaData().getUserName()).map(String::toUpperCase).orElse(null);
        } catch (final SQLException ignored) {
            return null;
        }
    }

The code try to get my username as the schema, undoubted it is impossible be null,so this place

handler.getSchema(connection)).orElse(getSchema(connection))

won't invoke orElse logic.But If invoke orElse i will get the correct schema

PaleWhiteDot commented 3 years ago

@PaleWhiteDot @chenxk I have tried to reproduce this problem, but failed. Can you provide steps to reproduce this exception?

I think the username could not be null, so the orElse logic could't be invoke always.

chenxk commented 3 years ago

@PaleWhiteDot @chenxk I have tried to reproduce this problem, but failed. Can you provide steps to reproduce this exception?

I found where the question is? In this method:PhysicalIndexMetaDataLoader.load(final Connection connection, final String table), will invoke connection.getSchema() and then will invoke the instance MetaDataConnectionAdapter.getSchema()

public String getSchema() {
        return DatabaseMetaDataDialectHandlerFactory.findHandler(databaseType).map(handler -> handler.getSchema(connection)).orElse(getSchema(connection));
    }

handle.getSchema(connection) like this（in this method OracleDatabaseMetaDataDialectHandler.getSchema()）

@Override
    public String getSchema(final Connection connection) {
        try {
            return Optional.ofNullable(connection.getMetaData().getUserName()).map(String::toUpperCase).orElse(null);
        } catch (final SQLException ignored) {
            return null;
        }
    }

The code try to get my username as the schema, undoubted it is impossible be null,so this place

handler.getSchema(connection)).orElse(getSchema(connection))

won't invoke orElse logic.But If invoke orElse i will get the correct schema

I also solved it like this!

PaleWhiteDot commented 3 years ago

@PaleWhiteDot @chenxk I have tried to reproduce this problem, but failed. Can you provide steps to reproduce this exception?

I found where the question is? In this method:PhysicalIndexMetaDataLoader.load(final Connection connection, final String table), will invoke connection.getSchema() and then will invoke the instance MetaDataConnectionAdapter.getSchema()

public String getSchema() {
        return DatabaseMetaDataDialectHandlerFactory.findHandler(databaseType).map(handler -> handler.getSchema(connection)).orElse(getSchema(connection));
    }

handle.getSchema(connection) like this（in this method OracleDatabaseMetaDataDialectHandler.getSchema()）

@Override
    public String getSchema(final Connection connection) {
        try {
            return Optional.ofNullable(connection.getMetaData().getUserName()).map(String::toUpperCase).orElse(null);
        } catch (final SQLException ignored) {
            return null;
        }
    }

The code try to get my username as the schema, undoubted it is impossible be null,so this place

handler.getSchema(connection)).orElse(getSchema(connection))

won't invoke orElse logic.But If invoke orElse i will get the correct schema

I also solved it like this!

I'm not solved it, I just found where the question is.I don't know how to solve it.

PaleWhiteDot commented 3 years ago

i found that i can get the correct schema by orElse(getSchema(connection) because i set schema=msg 

  ds1: !!com.zaxxer.hikari.HikariDataSource
    driverClassName: oracle.jdbc.driver.OracleDriver
    jdbcUrl: jdbc:oracle:thin:@//******/message
    username: MSG_CNT
    schema: msgs

but orElse place never be invoked. What should i do to solved this problem?

chenxk commented 3 years ago

i found that i can get the correct schema by orElse(getSchema(connection) because i set schema=msg

  ds1: !!com.zaxxer.hikari.HikariDataSource
    driverClassName: oracle.jdbc.driver.OracleDriver
    jdbcUrl: jdbc:oracle:thin:@//******/message
    username: MSG_CONNECT
    schema: msg

but orElse place never be invoked. What should i do to solved this problem?

@PaleWhiteDot @chenxk I have tried to reproduce this problem, but failed. Can you provide steps to reproduce this exception?

I found where the question is? In this method:PhysicalIndexMetaDataLoader.load(final Connection connection, final String table), will invoke connection.getSchema() and then will invoke the instance MetaDataConnectionAdapter.getSchema()

public String getSchema() {
        return DatabaseMetaDataDialectHandlerFactory.findHandler(databaseType).map(handler -> handler.getSchema(connection)).orElse(getSchema(connection));
    }

handle.getSchema(connection) like this（in this method OracleDatabaseMetaDataDialectHandler.getSchema()）

@Override
    public String getSchema(final Connection connection) {
        try {
            return Optional.ofNullable(connection.getMetaData().getUserName()).map(String::toUpperCase).orElse(null);
        } catch (final SQLException ignored) {
            return null;
        }
    }

The code try to get my username as the schema, undoubted it is impossible be null,so this place

handler.getSchema(connection)).orElse(getSchema(connection))

won't invoke orElse logic.But If invoke orElse i will get the correct schema

I also solved it like this!

I'm not solved it, I just found where the question is.I don't know how to solve it.

Temporary solution。 ，My oracle userName and SCHEMA are the same , just a coincidence !

strongduanmu commented 3 years ago

@chenxk @PaleWhiteDot Thank you very much for your detailed investigation. I checked the closed issue. This logic was added to solve other oracle metadata issues, refer to #6366.

I think we should adjust the priority of the schema. If the user configures the schema in the datasource, the value configured by the user should be taken first.

ds1: !!com.zaxxer.hikari.HikariDataSource
    driverClassName: oracle.jdbc.driver.OracleDriver
    jdbcUrl: jdbc:oracle:thin:@//******/message
    username: MSG_CONNECT
    schema: msg
PaleWhiteDot commented 3 years ago

@chenxk @PaleWhiteDot Thank you very much for your detailed investigation. I checked the closed issue. This logic was added to solve other oracle metadata issues, refer to #6366.

I think we should adjust the priority of the schema. If the user configures the schema in the datasource, the value configured by the user should be taken first.

ds1: !!com.zaxxer.hikari.HikariDataSource
    driverClassName: oracle.jdbc.driver.OracleDriver
    jdbcUrl: jdbc:oracle:thin:@//******/message
    username: MSG_CNT
    schema: msgs

Does that mean I cant't use shardingjdbc until you fix it.Is there another solution?

strongduanmu commented 3 years ago

@PaleWhiteDot If you are interested, you can try to submit a PR to fix this problem. BTW, 5.0.0-alpha still has some bugs to be solved, which is not suitable for production environment.

conquer66666 commented 3 years ago

Has the problem been solved? I use sharding-jdbc-spring-boot-starter(4.1.1),have the same problem.

Caused by: java.sql.SQLSyntaxErrorException: ORA-00942: 表或视图不存在

at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:628) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:562) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1145) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:726) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:291) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:492) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:108) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:887) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.OracleStatement.prepareDefineBufferAndExecute(OracleStatement.java:1158) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1093) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.OracleStatement.executeSQLSelect(OracleStatement.java:1402) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1285) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1687) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at oracle.jdbc.driver.OracleStatementWrapper.executeQuery(OracleStatementWrapper.java:394) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0]
at com.zaxxer.hikari.pool.ProxyStatement.executeQuery(ProxyStatement.java:111) ~[HikariCP-3.2.0.jar:na]
at com.zaxxer.hikari.pool.HikariProxyStatement.executeQuery(HikariProxyStatement.java) ~[HikariCP-3.2.0.jar:na]
at org.apache.shardingsphere.sql.parser.binder.metadata.column.ColumnMetaDataLoader.load(ColumnMetaDataLoader.java:75) ~[shardingsphere-sql-parser-binder-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.sql.parser.binder.metadata.schema.SchemaMetaDataLoader.load(SchemaMetaDataLoader.java:84) ~[shardingsphere-sql-parser-binder-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.sql.parser.binder.metadata.schema.SchemaMetaDataLoader.load(SchemaMetaDataLoader.java:76) ~[shardingsphere-sql-parser-binder-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.core.metadata.ShardingMetaDataLoader.loadDefaultSchemaMetaData(ShardingMetaDataLoader.java:142) ~[sharding-core-common-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.core.metadata.ShardingMetaDataLoader.load(ShardingMetaDataLoader.java:126) ~[sharding-core-common-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.ShardingRuntimeContext.loadSchemaMetaData(ShardingRuntimeContext.java:65) ~[sharding-jdbc-core-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.MultipleDataSourcesRuntimeContext.createMetaData(MultipleDataSourcesRuntimeContext.java:57) ~[sharding-jdbc-core-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.MultipleDataSourcesRuntimeContext.<init>(MultipleDataSourcesRuntimeContext.java:51) ~[sharding-jdbc-core-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.ShardingRuntimeContext.<init>(ShardingRuntimeContext.java:49) ~[sharding-jdbc-core-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.jdbc.core.datasource.ShardingDataSource.<init>(ShardingDataSource.java:54) ~[sharding-jdbc-core-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.api.ShardingDataSourceFactory.createDataSource(ShardingDataSourceFactory.java:48) ~[sharding-jdbc-core-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration.shardingDataSource(SpringBootConfiguration.java:103) ~[sharding-jdbc-spring-boot-starter-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$24832e93.CGLIB$shardingDataSource$1(<generated>) ~[sharding-jdbc-spring-boot-starter-4.1.1.jar:4.1.1]
at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$24832e93$$FastClassBySpringCGLIB$$a75dc4f.invoke(<generated>) ~[sharding-jdbc-spring-boot-starter-4.1.1.jar:4.1.1]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE]
at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$24832e93.shardingDataSource(<generated>) ~[sharding-jdbc-spring-boot-starter-4.1.1.jar:4.1.1]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0-262]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0-262]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0-262]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0-262]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE]
... 59 common frames omitted

Caused by: oracle.jdbc.OracleDatabaseException: ORA-00942: 表或视图不存在 at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:632) ~[ojdbc8-21.1.0.0.jar:21.1.0.0.0] ... 96 common frames omitted

conquer66666 commented 3 years ago

finally,I hack the org.apache.shardingsphere.sql.parser.binder.metadata.util.JdbcUtil.java ,solve my problem. sharding-jdbc-spring-boot-starter(4.1.1)

public static String getSchema(Connection connection, String databaseType) { String result = null;

    try {
        if ("Oracle".equals(databaseType)) {
            return null;   ==============> here modify to my schema
        }

        result = connection.getSchema();
    } catch (SQLException var4) {
    }

    return result;
}
myflx commented 3 years ago

mysql dialect has same question in version v4.1.1 when using shadow datasource and there are more than one tables in other database i find schema lost when debug. exception below:

Caused by: java.sql.SQLSyntaxErrorException: Unknown table '{other table in other database}' in information_schema
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:536)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:513)
    at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:115)
    at com.mysql.cj.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:1983)
    at com.mysql.cj.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:1936)
    at com.mysql.cj.jdbc.StatementImpl.executeQuery(StatementImpl.java:1422)
    at com.mysql.cj.jdbc.DatabaseMetaData$7.forEach(DatabaseMetaData.java:3182)
    at com.mysql.cj.jdbc.DatabaseMetaData$7.forEach(DatabaseMetaData.java:3170)
    at com.mysql.cj.jdbc.IterateBlock.doForAll(IterateBlock.java:50)
    at com.mysql.cj.jdbc.DatabaseMetaData.getPrimaryKeys(DatabaseMetaData.java:3223)
    at org.apache.shardingsphere.shardingjdbc.jdbc.core.datasource.metadata.MultipleDatabaseMetaData.getPrimaryKeys(MultipleDatabaseMetaData.java:142)
    at org.apache.shardingsphere.sql.parser.binder.metadata.column.ColumnMetaDataLoader.loadPrimaryKeys(ColumnMetaDataLoader.java:115)
    at org.apache.shardingsphere.sql.parser.binder.metadata.column.ColumnMetaDataLoader.load(ColumnMetaDataLoader.java:60)
    at org.apache.shardingsphere.sql.parser.binder.metadata.schema.SchemaMetaDataLoader.load(SchemaMetaDataLoader.java:84)
    at org.apache.shardingsphere.sql.parser.binder.metadata.schema.SchemaMetaDataLoader.load(SchemaMetaDataLoader.java:76)
    at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.ShadowRuntimeContext.loadSchemaMetaData(ShadowRuntimeContext.java:69)
    at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.SingleDataSourceRuntimeContext.createMetaData(SingleDataSourceRuntimeContext.java:56)
    at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.SingleDataSourceRuntimeContext.<init>(SingleDataSourceRuntimeContext.java:50)
    at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.ShadowRuntimeContext.<init>(ShadowRuntimeContext.java:48)
    at org.apache.shardingsphere.shardingjdbc.jdbc.core.datasource.ShadowDataSource.<init>(ShadowDataSource.java:46)
    at org.apache.shardingsphere.shardingjdbc.api.ShadowDataSourceFactory.createDataSource(ShadowDataSourceFactory.java:66)
    at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration.shadowDataSource(SpringBootConfiguration.java:139)
    at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$4a3fbefa.CGLIB$shadowDataSource$4(<generated>)
    at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$4a3fbefa$$FastClassBySpringCGLIB$$210ceb83.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363)
    at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$4a3fbefa.shadowDataSource(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)

this step loadAllTableNames load all table of all database


public static SchemaMetaData load(final DataSource dataSource, final int maxConnectionCount, final String databaseType) throws SQLException {
        List<String> tableNames;
        try (Connection connection = dataSource.getConnection()) {
            tableNames = loadAllTableNames(connection, databaseType);
        }
        log.info("Loading {} tables' meta data.", tableNames.size());
        if (0 == tableNames.size()) {
            return new SchemaMetaData(Collections.emptyMap());
        }
        List<List<String>> tableGroups = Lists.partition(tableNames, Math.max(tableNames.size() / maxConnectionCount, 1));
        Map<String, TableMetaData> tableMetaDataMap = 1 == tableGroups.size()
                ? load(dataSource.getConnection(), tableGroups.get(0), databaseType) : asyncLoad(dataSource, maxConnectionCount, tableNames, tableGroups, databaseType);
        return new SchemaMetaData(tableMetaDataMap);
    }
github-actions[bot] commented 2 years ago

Hello , this issue has not received a reply for several days. This issue is supposed to be closed.

github-actions[bot] commented 6 months ago

There hasn't been any activity on this issue recently, and in order to prioritize active issues, it will be marked as stale.

terrymanu commented 3 months ago

The version 4.1.1 is out of service, please try version 5.5.x