com.google.cloud.spanner.SpannerException: FAILED_PRECONDITION: io.grpc.StatusRuntimeException: FAILED_PRECONDITION: Invalid value for column json in table TestTable: Expected JSON.
	at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerExceptionPreformatted(SpannerExceptionFactory.java:291)
	at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerExceptionPreformatted(SpannerExceptionFactory.java:297)
	at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:170)
	at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:110)
	at com.google.cloud.spanner.TransactionRunnerImpl$TransactionContextImpl.commit(TransactionRunnerImpl.java:292)
	at com.google.cloud.spanner.TransactionRunnerImpl.lambda$runInternal$0(TransactionRunnerImpl.java:1022)
	at com.google.api.gax.retrying.DirectRetryingExecutor.submit(DirectRetryingExecutor.java:103)
	at com.google.cloud.RetryHelper.run(RetryHelper.java:76)
	at com.google.cloud.RetryHelper.runWithRetries(RetryHelper.java:50)
	at com.google.cloud.spanner.SpannerRetryHelper.runTxWithRetriesOnAborted(SpannerRetryHelper.java:79)
	at com.google.cloud.spanner.SpannerRetryHelper.runTxWithRetriesOnAborted(SpannerRetryHelper.java:68)
	at com.google.cloud.spanner.TransactionRunnerImpl.runInternal(TransactionRunnerImpl.java:1043)
	at com.google.cloud.spanner.TransactionRunnerImpl.run(TransactionRunnerImpl.java:948)
	at com.google.cloud.spanner.SessionImpl.writeWithOptions(SessionImpl.java:137)
	at com.google.cloud.spanner.SessionPool$PooledSession.writeWithOptions(SessionPool.java:1362)
	at com.google.cloud.spanner.SessionPool$PooledSessionFuture.writeWithOptions(SessionPool.java:1116)
	at com.google.cloud.spanner.DatabaseClientImpl.lambda$writeWithOptions$0(DatabaseClientImpl.java:72)
	at com.google.cloud.spanner.DatabaseClientImpl.runWithSessionRetry(DatabaseClientImpl.java:229)
	at com.google.cloud.spanner.DatabaseClientImpl.writeWithOptions(DatabaseClientImpl.java:72)
	at com.google.cloud.spanner.DatabaseClientImpl.write(DatabaseClientImpl.java:63)
	at com.google.cloud.spanner.it.ITJsonWriteReadTest.testWriteValidJsonValues(ITJsonWriteReadTest.java:106)
	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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:54)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.apache.maven.surefire.junitcore.JUnitCore.run(JUnitCore.java:55)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:137)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeLazy(JUnitCoreWrapper.java:119)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:87)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:75)
	at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:158)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:456)
	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:169)
	at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:595)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:581)
Caused by: com.google.cloud.spanner.SpannerException: FAILED_PRECONDITION: io.grpc.StatusRuntimeException: FAILED_PRECONDITION: Invalid value for column json in table TestTable: Expected JSON.
	at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerExceptionPreformatted(SpannerExceptionFactory.java:291)
	at com.google.cloud.spanner.SpannerExceptionFactory.fromApiException(SpannerExceptionFactory.java:311)
	at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:174)
	at com.google.cloud.spanner.SpannerExceptionFactory.newSpannerException(SpannerExceptionFactory.java:110)
	at com.google.cloud.spanner.TransactionRunnerImpl$TransactionContextImpl$CommitRunnable.lambda$run$0(TransactionRunnerImpl.java:402)
	at io.opencensus.trace.CurrentSpanUtils$RunnableInSpan.run(CurrentSpanUtils.java:125)
	at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:31)
	at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1270)
	at com.google.common.util.concurrent.AbstractFuture.complete(AbstractFuture.java:1038)
	at com.google.common.util.concurrent.AbstractFuture.setException(AbstractFuture.java:808)
	at com.google.api.gax.retrying.BasicRetryingFuture.handleAttempt(BasicRetryingFuture.java:200)
	at com.google.api.gax.retrying.CallbackChainRetryingFuture$AttemptCompletionListener.handle(CallbackChainRetryingFuture.java:135)
	at com.google.api.gax.retrying.CallbackChainRetryingFuture$AttemptCompletionListener.run(CallbackChainRetryingFuture.java:117)
	at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:31)
	at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1270)
	at com.google.common.util.concurrent.AbstractFuture.complete(AbstractFuture.java:1038)
	at com.google.common.util.concurrent.AbstractFuture.setException(AbstractFuture.java:808)
	at com.google.api.core.AbstractApiFuture$InternalSettableFuture.setException(AbstractApiFuture.java:94)
	at com.google.api.core.AbstractApiFuture.setException(AbstractApiFuture.java:76)
	at com.google.api.gax.grpc.GrpcExceptionCallable$ExceptionTransformingFuture.onFailure(GrpcExceptionCallable.java:97)
	at com.google.api.core.ApiFutures$1.onFailure(ApiFutures.java:67)
	at com.google.common.util.concurrent.Futures$CallbackListener.run(Futures.java:1132)
	at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:31)
	at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1270)
	at com.google.common.util.concurrent.AbstractFuture.complete(AbstractFuture.java:1038)
	at com.google.common.util.concurrent.AbstractFuture.setException(AbstractFuture.java:808)
	at io.grpc.stub.ClientCalls$GrpcFuture.setException(ClientCalls.java:574)
	at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:544)
	at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
	at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
	at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
	at com.google.api.gax.grpc.ChannelPool$ReleasingClientCall$1.onClose(ChannelPool.java:535)
	at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
	at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
	at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
	at com.google.cloud.spanner.GceTestEnvConfig$GrpcErrorInjector$1$1.onClose(GceTestEnvConfig.java:161)
	at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
	at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
	at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
	at 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$1$1.onClose(SpannerErrorInterceptor.java:100)
	at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:563)
	at io.grpc.internal.ClientCallImpl.access$300(ClientCallImpl.java:70)
	at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal(ClientCallImpl.java:744)
	at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:723)
	at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
	at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
	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:750)
Caused by: io.grpc.StatusRuntimeException: FAILED_PRECONDITION: Invalid value for column json in table TestTable: Expected JSON.
	at io.grpc.Status.asRuntimeException(Status.java:535)
	... 29 more