Amazon S3 Utilities

Hi there,

I am getting an error Error closing file stream.Endpoint does not contain a valid host name: null

I get the same error whether I specify the bucket name or the bucket arn.

For the file I am specifying an array with one element which is a full JSON filename (e.g. foobar.json).

Any help would be appreciated.

Regards

Rod

Hi there,

I am getting an error Error closing file stream.Endpoint does not contain a valid host name: null

I get the same error whether I specify the bucket name or the bucket arn.

For the file I am specifying an array with one element which is a full JSON filename (e.g. foobar.json).

Any help would be appreciated.

Regards

Rod

Just a note for anyone having a similar issue. Support helped me. The filename didn't need the URL, but it is important to specify the region even though it is optional. 

These are my logs:

2025-06-27 07:45:12,203 [Appian Work Item - 2885 - WorkID 930 - execution01 - process 268464249 - model 1545 : UnattendedJavaActivityRequest] ERROR com.appiancs.plugins.amazonS3Utils.ss.DownloadObjectsFromAmazonS3 - Error closing file stream
com.amazonaws.services.s3.model.AmazonS3Exception: The specified key does not exist. (Service: Amazon S3; Status Code: 404; Error Code: NoSuchKey; Request ID: MSZ26TTCVREFYKY8; S3 Extended Request ID: 6c2JJ0h8QrPokOH+UKIfTSLBeOS99+zAHeCkn3OF4bwetQnZp8Kv1ZAHTmSJ5HieqqZRvZWLpKY=; Proxy: null), S3 Extended Request ID: 6c2JJ0h8QrPokOH+UKIfTSLBeOS99+zAHeCkn3OF4bwetQnZp8Kv1ZAHTmSJ5HieqqZRvZWLpKY=
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1879)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleServiceErrorResponse(AmazonHttpClient.java:1418)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1387)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1157)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:814)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:781)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:755)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:715)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:697)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:561)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:541)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5558)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5505)
	at com.amazonaws.services.s3.AmazonS3Client.getObject(AmazonS3Client.java:1555)
	at com.appiancs.plugins.amazonS3Utils.ss.S3Operations.downloadFromS3(S3Operations.java:122)
	at com.appiancs.plugins.amazonS3Utils.ss.DownloadObjectsFromAmazonS3.getInputStream(DownloadObjectsFromAmazonS3.java:140)
	at com.appiancs.plugins.amazonS3Utils.ss.DownloadObjectsFromAmazonS3.run(DownloadObjectsFromAmazonS3.java:87)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.lambda$call$0(DefaultActivityExecutor.java:129)
	at com.appiancorp.plugins.PluginUsageLogger.runWithPluginInformation(PluginUsageLogger.java:54)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:129)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:123)
	at com.appiancorp.common.ContextClassLoaderSwitcher.runInContext(ContextClassLoaderSwitcher.java:30)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor.execute(DefaultActivityExecutor.java:123)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute(UnattendedJavaActivityRequest.java:110)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequestResponseCreator.getJavaActivityResultResponse(UnattendedJavaActivityRequestResponseCreator.java:23)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.getJavaActivityResultResponse(UnattendedJavaActivityRequest.java:89)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute0(UnattendedJavaActivityRequest.java:72)
	at com.appiancorp.common.persistence.data.AppianDataUserContextProvider.executeWithConsistentDataReads(AppianDataUserContextProvider.java:143)
	at com.appiancorp.process.engine.ProcessContinuationRequest.executeOuter(ProcessContinuationRequest.java:68)
	at com.appiancorp.process.engine.ActivityRequest.executeOuter(ActivityRequest.java:41)
	at com.appiancorp.process.engine.ContinuationRequest.execute(ContinuationRequest.java:136)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute(UnattendedJavaActivityRequest.java:125)
	at com.appiancorp.process.workpoller.UnattendedRequestHandlerBean.onMessage(UnattendedRequestHandlerBean.java:36)
	at com.appiancorp.process.workpoller.WorkItem.run(WorkItem.java:110)
	at org.springframework.jca.work.SimpleTaskWorkManager$DelegatingWorkAdapter.run(SimpleTaskWorkManager.java:241)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:840)

Just to clarify further...

When I use s3://somepath/foobar.json or https://somepath/foobar.json   then I get variations of 

Error closing file stream.The specified key does not exist. (Service: Amazon S3; Status Code: 404; Error Code: NoSuchKey; 

From https://stackoverflow.com/questions/28653249/amazon-s3-exception-the-specified-key-does-not-exist it seems people get this error when the file doesn't exist on the bucket. Am I specifying the file details incorrectly?

If I leave out the optional Region field I get Error closing file stream.Endpoint does not contain a valid host name: null

If I include the region to be eu-west-1 then I get the The specified key does not exist errors.

Any suggestions would be great.

regards

Rod