Yep, same stacktrace.  NPE originating from line 41 of SqsUnboundedSource.java.

I'll see about getting a remote debugger attached to the process.

Oct 6, 2020, 14:06 by aromanenko....@gmail.com:

> Hmm, do you have the same stack trace in this case?
>
> Can you debug it in runtime and make sure that read.sqsClientProvider() 
> returns null in SqsUnboundedSource(Read)? I’m curious if all calls to 
> SqsUnboundedSource(Read) were done in the same JVM.
>
>
>> On 6 Oct 2020, at 22:14, >> tclem...@tutanota.com>>  wrote:
>>
>> To test this, I tried a workaround of an implementation of 
>> AwsCredentialsProvider that also implemented Serializable.  The 
>> resolveCredentials method of this class would call that static create 
>> function of DefaultCredentialsProvider and forward the task to that.  There 
>> are no fields in the class that should actually need to be serialized.
>>
>> However, this approach is failing in the exact same manner.  I suspect 
>> something else might be the culprit here.
>>
>> Oct 5, 2020, 08:56 by >> aromanenko....@gmail.com>> :
>>
>>> Seems like there is an issue with non-serialisable AwsCredentialsProvider 
>>> as a member of BasicSqsClientProvider (which is Serializable).
>>>
>>>
>>>> On 2 Oct 2020, at 20:11, >>>> tclem...@tutanota.com>>>>  wrote:
>>>>
>>>> The app itself is developed in Clojure, but here's the gist of how it's 
>>>> getting configured:
>>>>
>>>>     AwsCredentialsProvider credProvider = 
>>>> EnvrionmentVariableCredentialsProvider.create();
>>>>     
>>>>     pipeline.apply(
>>>>       SqsIO.read()
>>>>         .withQueueUrl(url)
>>>>         .withSqsClientProvider(credProvider, region, endpoint));
>>>>
>>>> Oct 1, 2020, 08:48 by >>>> aromanenko....@gmail.com>>>> :
>>>>
>>>>> Could you send a code snippet of your pipeline with SqsIO v2 Read 
>>>>> transform configuration?
>>>>>
>>>>>> On 30 Sep 2020, at 22:56, >>>>>> tclem...@tutanota.com>>>>>>  wrote:
>>>>>>
>>>>>> I've been attempting to migrate to the AWS2 SDK (version 2.24.0) on 
>>>>>> Apache Spark 2.4.7.  However,
>>>>>> when switching over to the new API and running it I keep getting the 
>>>>>> following exceptions:
>>>>>>
>>>>>> 2020-09-30 20:38:32,428 ERROR streaming.StreamingContext: Error starting 
>>>>>> the context, marking it as stopped
>>>>>> org.apache.spark.SparkException: Job aborted due to stage failure: Task 
>>>>>> 0 in stage 2.0 failed 4 times, most recent failure: Lost task 0.3 in 
>>>>>> stage 2.0 (TID 6, 10.42.180.18, executor 0): 
>>>>>> java.lang.NullPointerException
>>>>>> at 
>>>>>> org.apache.beam.sdk.io.aws2.sqs.SqsUnboundedSource.lambda$new$e39e7721$1(SqsUnboundedSource.java:41)
>>>>>> at 
>>>>>> org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Suppliers$MemoizingSupplier.get(Suppliers.java:129)
>>>>>> at 
>>>>>> org.apache.beam.sdk.io.aws2.sqs.SqsUnboundedSource.getSqs(SqsUnboundedSource.java:74)
>>>>>> at 
>>>>>> org.apache.beam.sdk.io.aws2.sqs.SqsUnboundedReader.pull(SqsUnboundedReader.java:165)
>>>>>> at 
>>>>>> org.apache.beam.sdk.io.aws2.sqs.SqsUnboundedReader.advance(SqsUnboundedReader.java:108)
>>>>>> at 
>>>>>> org.apache.beam.runners.spark.io.MicrobatchSource$Reader.advanceWithBackoff(MicrobatchSource.java:246)
>>>>>> at 
>>>>>> org.apache.beam.runners.spark.io.MicrobatchSource$Reader.start(MicrobatchSource.java:224)
>>>>>> at 
>>>>>> org.apache.beam.runners.spark.stateful.StateSpecFunctions$1.apply(StateSpecFunctions.java:168)
>>>>>> at 
>>>>>> org.apache.beam.runners.spark.stateful.StateSpecFunctions$1.apply(StateSpecFunctions.java:107)
>>>>>> at 
>>>>>> org.apache.spark.streaming.StateSpec$$anonfun$1.apply(StateSpec.scala:181)
>>>>>> at 
>>>>>> org.apache.spark.streaming.StateSpec$$anonfun$1.apply(StateSpec.scala:180)
>>>>>> at 
>>>>>> org.apache.spark.streaming.rdd.MapWithStateRDDRecord$$anonfun$updateRecordWithData$1.apply(MapWithStateRDD.scala:57)
>>>>>>
>>>>>> Examining the source of SqsUnboundedSource reveals a lambda where it's 
>>>>>> trying to chain a few references:
>>>>>> read.sqsClientProvider().getSqsClient()
>>>>>>
>>>>>> Which is odd as I explicitly set the client provider on the read 
>>>>>> transform.  This was working well enough with the old SqsIO API to 
>>>>>> connect and process messages off the queue.
>>>>>>
>>>>>> Any thoughts on why this might be happening?  Or avenues to pursue in 
>>>>>> debugging this?
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>
>>>>
>>
>>

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