Google Cloud Spanner 未实施检查约束
Google Cloud Spanner not implementing check constraint
尝试使用 gcloud CLI 创建 table 时（使用 spanner 模拟器）
gcloud spanner databases ddl update db_name --instance=instance_name --ddl=$data
我正在尝试添加检查约束，其中 $data 的计算结果为：
CREATE TABLE my_table (
my_key STRING(36),
some_column STRING(100),
CONSTRAINT ck_my_table_some_column_enum CHECK (some_column = 'this' OR some_column = 'that'),
) PRIMARY KEY (my_key)
并不断收到以下错误：
ERROR: (gcloud.spanner.databases.ddl.update) HttpError accessing <http://localhost:9020/v1/projects/spanner-emulator-test/instances/instance_name/databases/db_name/ddl?alt=json>: response: <{'content-type': 'application/json', 'trailer': 'Grpc-Trailer-Content-Type', 'date': 'Tue, 31 Aug 2021 22:53:52 GMT', 'transfer-encoding': 'chunked', 'status': 501}>, content <{"error":"Check Constraint is not implemented.","code":12,"message":"Check Constraint is not implemented."}>
This may be due to network connectivity issues. Please check your network settings, and the status of the service you are trying to reach.
根据消息的最后部分，第一个倾向可能是验证模拟器 运行。这是。而且我已经尝试立即执行相同的 DDL 没有 检查约束并且它完美地工作 - table 已创建。
DBeaver
我也试过使用 DBeaver 数据库工具创建这个 table 并得到以下错误：
org.jkiss.dbeaver.model.sql.DBSQLException: SQL Error [12]: UNIMPLEMENTED: io.grpc.StatusRuntimeException: UNIMPLEMENTED: Check Constraint is not implemented.
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.executeStatement(JDBCStatementImpl.java:133)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeStatement(SQLQueryJob.java:513)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.lambda[=14=](SQLQueryJob.java:444)
at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:171)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeSingleQuery(SQLQueryJob.java:431)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.extractData(SQLQueryJob.java:816)
at org.jkiss.dbeaver.ui.editors.sql.SQLEditor$QueryResultsContainer.readData(SQLEditor.java:3440)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.lambda[=14=](ResultSetJobDataRead.java:118)
at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:171)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.run(ResultSetJobDataRead.java:116)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetViewer$ResultSetDataPumpJob.run(ResultSetViewer.java:4718)
at org.jkiss.dbeaver.model.runtime.AbstractJob.run(AbstractJob.java:105)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: com.google.cloud.spanner.jdbc.JdbcSqlExceptionFactory$JdbcSqlExceptionImpl: UNIMPLEMENTED: io.grpc.StatusRuntimeException: UNIMPLEMENTED: Check Constraint is not implemented.
at com.google.cloud.spanner.jdbc.JdbcSqlExceptionFactory.of(JdbcSqlExceptionFactory.java:222)
at com.google.cloud.spanner.jdbc.AbstractJdbcStatement.execute(AbstractJdbcStatement.java:259)
at com.google.cloud.spanner.jdbc.JdbcStatement.executeStatement(JdbcStatement.java:110)
at com.google.cloud.spanner.jdbc.JdbcStatement.execute(JdbcStatement.java:106)
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.execute(JDBCStatementImpl.java:330)
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.executeStatement(JDBCStatementImpl.java:130)
... 12 more
Caused by: com.google.cloud.spanner.SpannerException: UNIMPLEMENTED: io.grpc.StatusRuntimeException: UNIMPLEMENTED: Check Constraint is not implemented.
at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerExceptionPreformatted(SpannerExceptionFactory.java:284)
at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:61)
at com.google.cloud.spanner.SpannerExceptionFactory.fromApiException(SpannerExceptionFactory.java:299)
at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:174)
at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:110)
at com.google.cloud.spanner.DatabaseAdminClientImpl.lambda$updateDatabaseDdl(DatabaseAdminClientImpl.java:337)
at com.google.api.core.ApiFutures$ApiFunctionToGuavaFunction.apply(ApiFutures.java:240)
at com.google.common.util.concurrent.AbstractCatchingFuture$CatchingFuture.doFallback(AbstractCatchingFuture.java:223)
at com.google.common.util.concurrent.AbstractCatchingFuture$CatchingFuture.doFallback(AbstractCatchingFuture.java:211)
at com.google.common.util.concurrent.AbstractCatchingFuture.run(AbstractCatchingFuture.java:124)
at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:30)
at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1213)
at com.google.common.util.concurrent.AbstractFuture.addListener(AbstractFuture.java:724)
at com.google.common.util.concurrent.FluentFuture$TrustedFuture.addListener(FluentFuture.java:110)
at com.google.common.util.concurrent.ForwardingListenableFuture.addListener(ForwardingListenableFuture.java:45)
at com.google.api.core.ApiFutureToListenableFuture.addListener(ApiFutureToListenableFuture.java:52)
at com.google.common.util.concurrent.AbstractCatchingFuture.create(AbstractCatchingFuture.java:41)
at com.google.common.util.concurrent.Futures.catching(Futures.java:297)
at com.google.api.core.ApiFutures.catching(ApiFutures.java:99)
at com.google.api.gax.longrunning.OperationFutureImpl.<init>(OperationFutureImpl.java:97)
at com.google.cloud.spanner.DatabaseAdminClientImpl.updateDatabaseDdl(DatabaseAdminClientImpl.java:335)
at com.google.cloud.spanner.connection.DdlClient.executeDdl(DdlClient.java:89)
at com.google.cloud.spanner.connection.DdlClient.executeDdl(DdlClient.java:84)
at com.google.cloud.spanner.connection.SingleUseTransaction.lambda$executeDdlAsync(SingleUseTransaction.java:272)
at io.grpc.Context.call(Context.java:596)
at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125)
at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:69)
at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Suppressed: com.google.cloud.spanner.connection.AbstractBaseUnitOfWork$SpannerAsyncExecutionException: Execution failed for statement: CREATE TABLE my_table (
my_key STRING(36),
some_column STRING(100),
CONSTRAINT ck_my_table_some_column_enum CHECK (some_column = 'this' OR some_column = 'that'),
) PRIMARY KEY (my_key)
at com.google.cloud.spanner.connection.AbstractBaseUnitOfWork.executeStatementAsync(AbstractBaseUnitOfWork.java:233)
at com.google.cloud.spanner.connection.AbstractBaseUnitOfWork.executeStatementAsync(AbstractBaseUnitOfWork.java:145)
at com.google.cloud.spanner.connection.SingleUseTransaction.executeDdlAsync(SingleUseTransaction.java:281)
at com.google.cloud.spanner.connection.ConnectionImpl.executeDdlAsync(ConnectionImpl.java:1157)
at com.google.cloud.spanner.connection.ConnectionImpl.execute(ConnectionImpl.java:803)
at com.google.cloud.spanner.jdbc.AbstractJdbcStatement.execute(AbstractJdbcStatement.java:250)
at com.google.cloud.spanner.jdbc.JdbcStatement.executeStatement(JdbcStatement.java:110)
at com.google.cloud.spanner.jdbc.JdbcStatement.execute(JdbcStatement.java:106)
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.execute(JDBCStatementImpl.java:330)
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.executeStatement(JDBCStatementImpl.java:130)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeStatement(SQLQueryJob.java:513)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.lambda[=14=](SQLQueryJob.java:444)
at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:171)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeSingleQuery(SQLQueryJob.java:431)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.extractData(SQLQueryJob.java:816)
at org.jkiss.dbeaver.ui.editors.sql.SQLEditor$QueryResultsContainer.readData(SQLEditor.java:3440)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.lambda[=14=](ResultSetJobDataRead.java:118)
at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:171)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.run(ResultSetJobDataRead.java:116)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetViewer$ResultSetDataPumpJob.run(ResultSetViewer.java:4718)
at org.jkiss.dbeaver.model.runtime.AbstractJob.run(AbstractJob.java:105)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: io.grpc.StatusRuntimeException: UNIMPLEMENTED: Check Constraint is not implemented.
at io.grpc.Status.asRuntimeException(Status.java:535)
at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:533)
at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
at com.google.cloud.spanner.spi.v1.SpannerErrorInterceptor.onClose(SpannerErrorInterceptor.java:100)
at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:557)
at io.grpc.internal.ClientCallImpl.access0(ClientCallImpl.java:69)
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImplStreamClosed.runInternal(ClientCallImpl.java:738)
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImplStreamClosed.runInContext(ClientCallImpl.java:717)
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
... 3 more
嗯...看起来检查约束似乎不适用于模拟器。我在控制台中使用测试数据库进行了尝试，它成功了。但是，如果有人想出解决方案，或者我需要配置什么，请告诉我！谢谢。
检查约束在最新版本的模拟器中可用。如果有问题，您能否检查并回复我们。
尝试使用 gcloud CLI 创建 table 时（使用 spanner 模拟器）
gcloud spanner databases ddl update db_name --instance=instance_name --ddl=$data
我正在尝试添加检查约束，其中 $data 的计算结果为：
CREATE TABLE my_table (
my_key STRING(36),
some_column STRING(100),
CONSTRAINT ck_my_table_some_column_enum CHECK (some_column = 'this' OR some_column = 'that'),
) PRIMARY KEY (my_key)
并不断收到以下错误：
ERROR: (gcloud.spanner.databases.ddl.update) HttpError accessing <http://localhost:9020/v1/projects/spanner-emulator-test/instances/instance_name/databases/db_name/ddl?alt=json>: response: <{'content-type': 'application/json', 'trailer': 'Grpc-Trailer-Content-Type', 'date': 'Tue, 31 Aug 2021 22:53:52 GMT', 'transfer-encoding': 'chunked', 'status': 501}>, content <{"error":"Check Constraint is not implemented.","code":12,"message":"Check Constraint is not implemented."}>
This may be due to network connectivity issues. Please check your network settings, and the status of the service you are trying to reach.
根据消息的最后部分，第一个倾向可能是验证模拟器 运行。这是。而且我已经尝试立即执行相同的 DDL 没有 检查约束并且它完美地工作 - table 已创建。
DBeaver
我也试过使用 DBeaver 数据库工具创建这个 table 并得到以下错误：
org.jkiss.dbeaver.model.sql.DBSQLException: SQL Error [12]: UNIMPLEMENTED: io.grpc.StatusRuntimeException: UNIMPLEMENTED: Check Constraint is not implemented.
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.executeStatement(JDBCStatementImpl.java:133)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeStatement(SQLQueryJob.java:513)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.lambda[=14=](SQLQueryJob.java:444)
at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:171)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeSingleQuery(SQLQueryJob.java:431)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.extractData(SQLQueryJob.java:816)
at org.jkiss.dbeaver.ui.editors.sql.SQLEditor$QueryResultsContainer.readData(SQLEditor.java:3440)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.lambda[=14=](ResultSetJobDataRead.java:118)
at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:171)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.run(ResultSetJobDataRead.java:116)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetViewer$ResultSetDataPumpJob.run(ResultSetViewer.java:4718)
at org.jkiss.dbeaver.model.runtime.AbstractJob.run(AbstractJob.java:105)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: com.google.cloud.spanner.jdbc.JdbcSqlExceptionFactory$JdbcSqlExceptionImpl: UNIMPLEMENTED: io.grpc.StatusRuntimeException: UNIMPLEMENTED: Check Constraint is not implemented.
at com.google.cloud.spanner.jdbc.JdbcSqlExceptionFactory.of(JdbcSqlExceptionFactory.java:222)
at com.google.cloud.spanner.jdbc.AbstractJdbcStatement.execute(AbstractJdbcStatement.java:259)
at com.google.cloud.spanner.jdbc.JdbcStatement.executeStatement(JdbcStatement.java:110)
at com.google.cloud.spanner.jdbc.JdbcStatement.execute(JdbcStatement.java:106)
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.execute(JDBCStatementImpl.java:330)
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.executeStatement(JDBCStatementImpl.java:130)
... 12 more
Caused by: com.google.cloud.spanner.SpannerException: UNIMPLEMENTED: io.grpc.StatusRuntimeException: UNIMPLEMENTED: Check Constraint is not implemented.
at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerExceptionPreformatted(SpannerExceptionFactory.java:284)
at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:61)
at com.google.cloud.spanner.SpannerExceptionFactory.fromApiException(SpannerExceptionFactory.java:299)
at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:174)
at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:110)
at com.google.cloud.spanner.DatabaseAdminClientImpl.lambda$updateDatabaseDdl(DatabaseAdminClientImpl.java:337)
at com.google.api.core.ApiFutures$ApiFunctionToGuavaFunction.apply(ApiFutures.java:240)
at com.google.common.util.concurrent.AbstractCatchingFuture$CatchingFuture.doFallback(AbstractCatchingFuture.java:223)
at com.google.common.util.concurrent.AbstractCatchingFuture$CatchingFuture.doFallback(AbstractCatchingFuture.java:211)
at com.google.common.util.concurrent.AbstractCatchingFuture.run(AbstractCatchingFuture.java:124)
at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:30)
at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1213)
at com.google.common.util.concurrent.AbstractFuture.addListener(AbstractFuture.java:724)
at com.google.common.util.concurrent.FluentFuture$TrustedFuture.addListener(FluentFuture.java:110)
at com.google.common.util.concurrent.ForwardingListenableFuture.addListener(ForwardingListenableFuture.java:45)
at com.google.api.core.ApiFutureToListenableFuture.addListener(ApiFutureToListenableFuture.java:52)
at com.google.common.util.concurrent.AbstractCatchingFuture.create(AbstractCatchingFuture.java:41)
at com.google.common.util.concurrent.Futures.catching(Futures.java:297)
at com.google.api.core.ApiFutures.catching(ApiFutures.java:99)
at com.google.api.gax.longrunning.OperationFutureImpl.<init>(OperationFutureImpl.java:97)
at com.google.cloud.spanner.DatabaseAdminClientImpl.updateDatabaseDdl(DatabaseAdminClientImpl.java:335)
at com.google.cloud.spanner.connection.DdlClient.executeDdl(DdlClient.java:89)
at com.google.cloud.spanner.connection.DdlClient.executeDdl(DdlClient.java:84)
at com.google.cloud.spanner.connection.SingleUseTransaction.lambda$executeDdlAsync(SingleUseTransaction.java:272)
at io.grpc.Context.call(Context.java:596)
at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125)
at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:69)
at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Suppressed: com.google.cloud.spanner.connection.AbstractBaseUnitOfWork$SpannerAsyncExecutionException: Execution failed for statement: CREATE TABLE my_table (
my_key STRING(36),
some_column STRING(100),
CONSTRAINT ck_my_table_some_column_enum CHECK (some_column = 'this' OR some_column = 'that'),
) PRIMARY KEY (my_key)
at com.google.cloud.spanner.connection.AbstractBaseUnitOfWork.executeStatementAsync(AbstractBaseUnitOfWork.java:233)
at com.google.cloud.spanner.connection.AbstractBaseUnitOfWork.executeStatementAsync(AbstractBaseUnitOfWork.java:145)
at com.google.cloud.spanner.connection.SingleUseTransaction.executeDdlAsync(SingleUseTransaction.java:281)
at com.google.cloud.spanner.connection.ConnectionImpl.executeDdlAsync(ConnectionImpl.java:1157)
at com.google.cloud.spanner.connection.ConnectionImpl.execute(ConnectionImpl.java:803)
at com.google.cloud.spanner.jdbc.AbstractJdbcStatement.execute(AbstractJdbcStatement.java:250)
at com.google.cloud.spanner.jdbc.JdbcStatement.executeStatement(JdbcStatement.java:110)
at com.google.cloud.spanner.jdbc.JdbcStatement.execute(JdbcStatement.java:106)
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.execute(JDBCStatementImpl.java:330)
at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.executeStatement(JDBCStatementImpl.java:130)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeStatement(SQLQueryJob.java:513)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.lambda[=14=](SQLQueryJob.java:444)
at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:171)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeSingleQuery(SQLQueryJob.java:431)
at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.extractData(SQLQueryJob.java:816)
at org.jkiss.dbeaver.ui.editors.sql.SQLEditor$QueryResultsContainer.readData(SQLEditor.java:3440)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.lambda[=14=](ResultSetJobDataRead.java:118)
at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:171)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.run(ResultSetJobDataRead.java:116)
at org.jkiss.dbeaver.ui.controls.resultset.ResultSetViewer$ResultSetDataPumpJob.run(ResultSetViewer.java:4718)
at org.jkiss.dbeaver.model.runtime.AbstractJob.run(AbstractJob.java:105)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: io.grpc.StatusRuntimeException: UNIMPLEMENTED: Check Constraint is not implemented.
at io.grpc.Status.asRuntimeException(Status.java:535)
at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:533)
at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
at com.google.cloud.spanner.spi.v1.SpannerErrorInterceptor.onClose(SpannerErrorInterceptor.java:100)
at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:557)
at io.grpc.internal.ClientCallImpl.access0(ClientCallImpl.java:69)
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImplStreamClosed.runInternal(ClientCallImpl.java:738)
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImplStreamClosed.runInContext(ClientCallImpl.java:717)
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
... 3 more
嗯...看起来检查约束似乎不适用于模拟器。我在控制台中使用测试数据库进行了尝试，它成功了。但是，如果有人想出解决方案，或者我需要配置什么，请告诉我！谢谢。
检查约束在最新版本的模拟器中可用。如果有问题，您能否检查并回复我们。