You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
{{ message }}
This repository was archived by the owner on Feb 24, 2026. It is now read-only.
These tests always timeout when testing with a Firestore in Datastore Mode DB. I think the reason they pass in continuous tests is because the type of DB they use (in project gcloud-devel) is "Cloud Datastore".
I believe the root cause of the timeouts is the transaction isolation and consistency behavior differences between the 2 Datastore DB types, documented here and here.
TL;DR
With Firestore in datastore mode when 2 concurrent transactions read or write the same data, the lock held by one transaction can delay the other transaction (hence the timeouts), but with Cloud Datastore the contention is reported as an error at commit.
org.junit.runners.model.TestTimedOutException: test timed out after 100 seconds
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:171)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:457)
at sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68)
at sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1332)
at sun.security.ssl.SSLSocketImpl.access$300(SSLSocketImpl.java:73)
at sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:948)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:735)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:678)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1593)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:352)
at com.google.api.client.http.javanet.NetHttpResponse.<init>(NetHttpResponse.java:36)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:149)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:84)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1012)
at com.google.datastore.v1.client.RemoteRpc.call(RemoteRpc.java:97)
at com.google.datastore.v1.client.Datastore.commit(Datastore.java:85)
at com.google.cloud.datastore.spi.v1.HttpDatastoreRpc.commit(HttpDatastoreRpc.java:162)
at com.google.cloud.datastore.DatastoreImpl$5.call(DatastoreImpl.java:564)
at com.google.cloud.datastore.DatastoreImpl$5.call(DatastoreImpl.java:561)
at com.google.api.gax.retrying.DirectRetryingExecutor.submit(DirectRetryingExecutor.java:105)
at com.google.cloud.RetryHelper.run(RetryHelper.java:76)
at com.google.cloud.RetryHelper.runWithRetries(RetryHelper.java:50)
at com.google.cloud.datastore.DatastoreImpl.commit(DatastoreImpl.java:560)
at com.google.cloud.datastore.DatastoreImpl.commitMutation(DatastoreImpl.java:553)
at com.google.cloud.datastore.DatastoreImpl.put(DatastoreImpl.java:513)
at com.google.cloud.datastore.DatastoreHelper.put(DatastoreHelper.java:53)
at com.google.cloud.datastore.DatastoreImpl.put(DatastoreImpl.java:488)
at com.google.cloud.datastore.it.ITDatastoreTest.testTransactionWithQuery(ITDatastoreTest.java:284)
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$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:299)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:293)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.lang.Thread.run(Thread.java:748)
it.ITDatastoreTest.testTransactionWithRead
this test would also timeout if this code was updating ENTITY3 as stated in the comment.
java.lang.AssertionError: Expecting a failure
at org.junit.Assert.fail(Assert.java:89)
at com.google.cloud.datastore.it.ITDatastoreTest.testTransactionWithRead(ITDatastoreTest.java:254)
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$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:299)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:293)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.lang.Thread.run(Thread.java:748)
These tests always timeout when testing with a Firestore in Datastore Mode DB. I think the reason they pass in continuous tests is because the type of DB they use (in project
gcloud-devel) is "Cloud Datastore".I believe the root cause of the timeouts is the transaction isolation and consistency behavior differences between the 2 Datastore DB types, documented here and here.
TL;DR
With Firestore in datastore mode when 2 concurrent transactions read or write the same data, the lock held by one transaction can delay the other transaction (hence the timeouts), but with Cloud Datastore the contention is reported as an error at commit.
Environment details
All environments
Steps to reproduce
Stack trace
it.ITDatastoreTest.testTransactionWithQuery
it.ITDatastoreTest.testTransactionWithRead
this test would also timeout if this code was updating ENTITY3 as stated in the comment.
External references such as API reference guides