[ 
https://issues.apache.org/jira/browse/BEAM-11805?focusedWorklogId=553319&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-553319
 ]

ASF GitHub Bot logged work on BEAM-11805:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 17/Feb/21 01:55
            Start Date: 17/Feb/21 01:55
    Worklog Time Spent: 10m 
      Work Description: allenpradeep commented on a change in pull request 
#13990:
URL: https://github.com/apache/beam/pull/13990#discussion_r577270669



##########
File path: 
sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/spanner/SpannerAccessor.java
##########
@@ -150,14 +189,34 @@ private static SpannerAccessor 
createAndConnect(SpannerConfig spannerConfig) {
     ValueProvider<String> host = spannerConfig.getHost();
     if (host != null) {
       builder.setHost(host.get());
+      instantiatingGrpcChannelProvider.setEndpoint(getEndpoint(host.get()));
     }
     ValueProvider<String> emulatorHost = spannerConfig.getEmulatorHost();
     if (emulatorHost != null) {
       builder.setEmulatorHost(emulatorHost.get());
       builder.setCredentials(NoCredentials.getInstance());
+    } else {

Review comment:
       This is to enable a fail fast if the emulator is not running, but the 
user has set the emulator host environment variable.
   
   As per 
[function-checkEmulatorConnection](https://github.com/googleapis/java-spanner/blob/master/google-cloud-spanner/src/main/java/com/google/cloud/spanner/spi/v1/GapicSpannerRpc.java#L497-L539)
 [line 
502](https://github.com/googleapis/java-spanner/blob/master/google-cloud-spanner/src/main/java/com/google/cloud/spanner/spi/v1/GapicSpannerRpc.java#L502),
 the fail fast link works only if the channelprovider is set to null. This 
workaround only sets the channel provider only when we are not going to connect 
to emulator.
   
   cc @thiagotnunes




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 553319)
    Time Spent: 7h 50m  (was: 7h 40m)

> SpannerReadIT broken in PostCommit_Java
> ---------------------------------------
>
>                 Key: BEAM-11805
>                 URL: https://issues.apache.org/jira/browse/BEAM-11805
>             Project: Beam
>          Issue Type: Bug
>          Components: io-java-gcp
>            Reporter: Brian Hulette
>            Assignee: Allen Pradeep Xavier
>            Priority: P1
>          Time Spent: 7h 50m
>  Remaining Estimate: 0h
>
> SpannerReadIT started failing after https://github.com/apache/beam/pull/13765 
> went in: 
> https://ci-beam.apache.org/job/beam_PostCommit_Java/7195/
> Example log:
> {code}
> java.lang.RuntimeException: java.lang.RuntimeException: 
> org.apache.beam.sdk.util.UserCodeException: 
> java.lang.IllegalArgumentException: Multiple entries with same key: 
> user-agent=Apache_Beam_Java/2.29.0-SNAPSHOT and user-agent=spanner-java/3.2.1
>       at 
> org.apache.beam.runners.dataflow.worker.IntrinsicMapTaskExecutorFactory$1.typedApply(IntrinsicMapTaskExecutorFactory.java:197)
>       at 
> org.apache.beam.runners.dataflow.worker.IntrinsicMapTaskExecutorFactory$1.typedApply(IntrinsicMapTaskExecutorFactory.java:168)
>       at 
> org.apache.beam.runners.dataflow.worker.graph.Networks$TypeSafeNodeFunction.apply(Networks.java:66)
>       at 
> org.apache.beam.runners.dataflow.worker.graph.Networks$TypeSafeNodeFunction.apply(Networks.java:53)
>       at 
> org.apache.beam.runners.dataflow.worker.graph.Networks.replaceDirectedNetworkNodes(Networks.java:90)
>       at 
> org.apache.beam.runners.dataflow.worker.IntrinsicMapTaskExecutorFactory.create(IntrinsicMapTaskExecutorFactory.java:128)
>       at 
> org.apache.beam.runners.dataflow.worker.BatchDataflowWorker.doWork(BatchDataflowWorker.java:361)
>       at 
> org.apache.beam.runners.dataflow.worker.BatchDataflowWorker.getAndPerformWork(BatchDataflowWorker.java:314)
>       at 
> org.apache.beam.runners.dataflow.worker.DataflowBatchWorkerHarness$WorkerThread.doWork(DataflowBatchWorkerHarness.java:140)
>       at 
> org.apache.beam.runners.dataflow.worker.DataflowBatchWorkerHarness$WorkerThread.call(DataflowBatchWorkerHarness.java:120)
>       at 
> org.apache.beam.runners.dataflow.worker.DataflowBatchWorkerHarness$WorkerThread.call(DataflowBatchWorkerHarness.java:107)
>       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at java.lang.Thread.run(Thread.java:748)
> Caused by: org.apache.beam.sdk.util.UserCodeException: 
> java.lang.IllegalArgumentException: Multiple entries with same key: 
> user-agent=Apache_Beam_Java/2.29.0-SNAPSHOT and user-agent=spanner-java/3.2.1
>       at 
> org.apache.beam.sdk.util.UserCodeException.wrap(UserCodeException.java:39)
>       at 
> org.apache.beam.sdk.io.gcp.spanner.CreateTransactionFn$DoFnInvoker.invokeSetup(Unknown
>  Source)
>       at 
> org.apache.beam.runners.dataflow.worker.DoFnInstanceManagers$ConcurrentQueueInstanceManager.deserializeCopy(DoFnInstanceManagers.java:83)
>       at 
> org.apache.beam.runners.dataflow.worker.DoFnInstanceManagers$ConcurrentQueueInstanceManager.peek(DoFnInstanceManagers.java:65)
>       at 
> org.apache.beam.runners.dataflow.worker.UserParDoFnFactory.create(UserParDoFnFactory.java:99)
>       at 
> org.apache.beam.runners.dataflow.worker.DefaultParDoFnFactory.create(DefaultParDoFnFactory.java:75)
>       at 
> org.apache.beam.runners.dataflow.worker.IntrinsicMapTaskExecutorFactory.createParDoOperation(IntrinsicMapTaskExecutorFactory.java:267)
>       at 
> org.apache.beam.runners.dataflow.worker.IntrinsicMapTaskExecutorFactory.access$000(IntrinsicMapTaskExecutorFactory.java:89)
>       at 
> org.apache.beam.runners.dataflow.worker.IntrinsicMapTaskExecutorFactory$1.typedApply(IntrinsicMapTaskExecutorFactory.java:186)
>       ... 14 more
> Caused by: java.lang.IllegalArgumentException: Multiple entries with same 
> key: user-agent=Apache_Beam_Java/2.29.0-SNAPSHOT and 
> user-agent=spanner-java/3.2.1
>       at 
> com.google.common.collect.ImmutableMap.conflictException(ImmutableMap.java:215)
>       at 
> com.google.common.collect.ImmutableMap.checkNoConflict(ImmutableMap.java:209)
>       at 
> com.google.common.collect.RegularImmutableMap.checkNoConflictInKeyBucket(RegularImmutableMap.java:147)
>       at 
> com.google.common.collect.RegularImmutableMap.fromEntryArray(RegularImmutableMap.java:110)
>       at 
> com.google.common.collect.ImmutableMap$Builder.build(ImmutableMap.java:393)
>       at 
> com.google.cloud.spanner.spi.v1.GapicSpannerRpc.<init>(GapicSpannerRpc.java:320)
>       at 
> com.google.cloud.spanner.SpannerOptions$DefaultSpannerRpcFactory.create(SpannerOptions.java:467)
>       at 
> com.google.cloud.spanner.SpannerOptions$DefaultSpannerRpcFactory.create(SpannerOptions.java:462)
>       at com.google.cloud.ServiceOptions.getRpc(ServiceOptions.java:561)
>       at 
> com.google.cloud.spanner.SpannerOptions.getSpannerRpcV1(SpannerOptions.java:1169)
>       at com.google.cloud.spanner.SpannerImpl.<init>(SpannerImpl.java:134)
>       at 
> com.google.cloud.spanner.SpannerOptions$DefaultSpannerFactory.create(SpannerOptions.java:457)
>       at 
> com.google.cloud.spanner.SpannerOptions$DefaultSpannerFactory.create(SpannerOptions.java:452)
>       at com.google.cloud.ServiceOptions.getService(ServiceOptions.java:541)
>       at 
> org.apache.beam.sdk.io.gcp.spanner.SpannerAccessor.createAndConnect(SpannerAccessor.java:163)
>       at 
> org.apache.beam.sdk.io.gcp.spanner.SpannerAccessor.getOrCreate(SpannerAccessor.java:98)
>       at 
> org.apache.beam.sdk.io.gcp.spanner.CreateTransactionFn.setup(CreateTransactionFn.java:39)
> {code}



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