EOF Exception writing non-english Characters to Spanner

I am having an issue with Apache Beam ^2.3 and Google Cloud Platform Spanner.

In short, I'm trying to write data into Spanner. Some of this data contains non-English characters, which blows up the dataflow job when using Beam 2.3 or higher.

Currently, I'm trying to use Apache Beam 2.5, google-api-client 1.23 and Java 1.8.

This error occurs using Apache Beam 2.3, and not when using 2.2. When using Apache Beam 2.2, we have to drop the google-http/api-client to 1.22 from 1.23.

<beam.version>2.5.0</beam.version>

<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-core</artifactId>
<version>${beam.version}</version>
</dependency>

<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-runners-google-cloud-dataflow-java</artifactId>
<version>${beam.version}</version>
</dependency>

<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-io-google-cloud-platform</artifactId>
<version>${beam.version}</version>
</dependency>

The google libraries

<google-clients.version>1.23.0</google-clients.version>
<google-package.version>0.26.0-alpha</google-package.version>

<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud</artifactId>
<version>${google-package.version}</version>
</dependency>

<dependency>
<groupId>com.google.http-client</groupId>
<artifactId>google-http-client</artifactId>
<version>${google-clients.version}</version>
<exclusions>
<!-- Exclude an old version of guava that is being pulled
in by a transitive dependency of google-api-client -->
<exclusion>
<groupId>com.google.guava</groupId>
<artifactId>guava-jdk5</artifactId>
</exclusion>
</exclusions>
</dependency>

Here's the stack trace. You'll see that in this quick sample runner we tried inserting 4 rows. Everything runs fine until I attempt to write mutations to the table.

[INFO] Scanning for projects...
[INFO]
[INFO] -------------------< com.testing:dataflowtwofive >--------------------
[INFO] Building dataflowtwofive 0.1
[INFO] -------------------------------[ jar ]--------------------------------
[WARNING] The POM for com.google.oauth-client:google-oauth-client:jar:1.23.0 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[WARNING] The POM for com.google.http-client:google-http-client-jackson:jar:1.23.0 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[WARNING] The POM for com.google.apis:google-api-services-storage:jar:v1-rev114-1.23.0 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[INFO]
[INFO] — maven-resources-plugin:2.6:resources (default-resources) @ dataflowtwofive —
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] — maven-compiler-plugin:3.6.1:compile (default-compile) @ dataflowtwofive —
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] — exec-maven-plugin:1.4.0:java (default-cli) @ dataflowtwofive —
Jul 19, 2018 3:22:41 PM runners.SimpleTestRunner main
WARNING: ATTN: Coder for mutations: [class com.google.cloud.spanner.Mutation]

Jul 19, 2018 3:22:42 PM transforms.TestMutationBuilder processElement
WARNING: ATTN: mutation: [\{ROW_INSERT_TIMESTAMP=2018-07-19T20:22:42.765000000Z, ROW_UPDATE_TIMESTAMP=2018-07-19T20:22:42.809000000Z, GUID=f2360671-557d-4406-b693-c0d66..., LAHQ=a, LAISO=a2, LASPEZ=a3, SPRAS=a4}]

Jul 19, 2018 3:22:42 PM transforms.TestMutationBuilder processElement
WARNING: ATTN: mutation: [\{ROW_INSERT_TIMESTAMP=2018-07-19T20:22:42.765000000Z, ROW_UPDATE_TIMESTAMP=2018-07-19T20:22:42.809000000Z, GUID=cba60659-6986-4dc3-a523-116e2..., LAHQ=á, LAISO=c2, LASPEZ=c3, SPRAS=c4}]

Jul 19, 2018 3:22:42 PM transforms.TestMutationBuilder processElement
WARNING: ATTN: mutation: [\{ROW_INSERT_TIMESTAMP=2018-07-19T20:22:42.765000000Z, ROW_UPDATE_TIMESTAMP=2018-07-19T20:22:42.809000000Z, GUID=889d9d14-df57-4d72-8748-8de0f..., LAHQ=d, LAISO=d2, LASPEZ=d3, SPRAS=d4}]

Jul 19, 2018 3:22:42 PM transforms.TestMutationBuilder processElement
WARNING: ATTN: mutation: [\{ROW_INSERT_TIMESTAMP=2018-07-19T20:22:42.765000000Z, ROW_UPDATE_TIMESTAMP=2018-07-19T20:22:42.809000000Z, GUID=888a2a76-aff7-4f64-9e24-2c231..., LAHQ=b, LAISO=b2, LASPEZ=b3, SPRAS=b4}]

[WARNING]
java.lang.reflect.InvocationTargetException
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.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:293)
at java.lang.Thread.run (Thread.java:748)
Caused by: org.apache.beam.sdk.Pipeline$PipelineExecutionException: java.lang.RuntimeException: java.io.EOFException
at org.apache.beam.runners.direct.DirectRunner$DirectPipelineResult.waitUntilFinish (DirectRunner.java:349)
at org.apache.beam.runners.direct.DirectRunner$DirectPipelineResult.waitUntilFinish (DirectRunner.java:319)
at org.apache.beam.runners.direct.DirectRunner.run (DirectRunner.java:210)
at org.apache.beam.runners.direct.DirectRunner.run (DirectRunner.java:66)
at org.apache.beam.sdk.Pipeline.run (Pipeline.java:311)
at org.apache.beam.sdk.Pipeline.run (Pipeline.java:297)
at runners.SimpleTestRunner.main (SimpleTestRunner.java:53)
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.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:293)
at java.lang.Thread.run (Thread.java:748)
Caused by: java.lang.RuntimeException: java.io.EOFException
at org.apache.beam.sdk.io.gcp.spanner.MutationGroupEncoder.decode (MutationGroupEncoder.java:271)
at org.apache.beam.sdk.io.gcp.spanner.SpannerIO$BatchFn.processElement (SpannerIO.java:1030)
Caused by: java.io.EOFException
at java.io.DataInputStream.readFully (DataInputStream.java:197)
at java.io.DataInputStream.readFully (DataInputStream.java:169)
at org.apache.beam.sdk.io.gcp.spanner.MutationGroupEncoder.readBytes (MutationGroupEncoder.java:475)
at org.apache.beam.sdk.io.gcp.spanner.MutationGroupEncoder.decodePrimitive (MutationGroupEncoder.java:434)
at org.apache.beam.sdk.io.gcp.spanner.MutationGroupEncoder.decodeModification (MutationGroupEncoder.java:326)
at org.apache.beam.sdk.io.gcp.spanner.MutationGroupEncoder.decodeMutation (MutationGroupEncoder.java:280)
at org.apache.beam.sdk.io.gcp.spanner.MutationGroupEncoder.decode (MutationGroupEncoder.java:264)
at org.apache.beam.sdk.io.gcp.spanner.SpannerIO$BatchFn.processElement (SpannerIO.java:1030)
at org.apache.beam.sdk.io.gcp.spanner.SpannerIO$BatchFn$DoFnInvoker.invokeProcessElement (Unknown Source)
at org.apache.beam.repackaged.beam_runners_direct_java.runners.core.SimpleDoFnRunner.invokeProcessElement (SimpleDoFnRunner.java:185)
at org.apache.beam.repackaged.beam_runners_direct_java.runners.core.SimpleDoFnRunner.processElement (SimpleDoFnRunner.java:146)
at org.apache.beam.repackaged.beam_runners_direct_java.runners.core.SimplePushbackSideInputDoFnRunner.processElementInReadyWindows (SimplePushbackSideInputDoFnRunner.java:87)
at org.apache.beam.runners.direct.ParDoEvaluator.processElement (ParDoEvaluator.java:189)
at org.apache.beam.runners.direct.DoFnLifecycleManagerRemovingTransformEvaluator.processElement (DoFnLifecycleManagerRemovingTransformEvaluator.java:55)
at org.apache.beam.runners.direct.DirectTransformExecutor.processElements (DirectTransformExecutor.java:161)
at org.apache.beam.runners.direct.DirectTransformExecutor.run (DirectTransformExecutor.java:125)
at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511)
at java.util.concurrent.FutureTask.run (FutureTask.java:266)
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)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.817 s
[INFO] Finished at: 2018-07-19T15:22:47-05:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.4.0:java (default-cli) on project dataflowtwofive: An exception occured while executing the Java class. null: InvocationTargetException: java.lang.RuntimeException: java.io.EOFException -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

If anything else is needed to help solve this issue, please let me know.