[CAMEL-10097] Camel aws-s3 Timeout waiting for connection from pool

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 2.15.1, 2.17.1
• Component/s: camel-aws
• Labels: aws-s3
• Estimated Complexity: Unknown
• External issue URL: http://camel.465427.n5.nabble.com/camel-s3-Timeout-waiting-for-connection-from-pool-tt5784483.html
• Assignee: Andrea Cosentino
• Reporter: Raghavan Aravamudhan
• Created: 28/Jun/16 12:14
• Updated: 26/Oct/16 06:17
• Resolved: 26/Oct/16 06:17

Description

I'm a beginner to apache camel framework and i'm using 2.17.1 version. My use case is to periodically sync newly created files in s3 to local folder in linux in java, for which i'm using camel aws-s3 component.

I'm using deleteAfterRead=false, not to delete files in s3 after download and idempotentConsumer for not to poll and download duplicate files again and again.

RouteBuilder
from("aws-s3://" + Constants.BUCKET_NAME + "?amazonS3Client=#client&deleteAfterRead=false")
.idempotentConsumer(header("CamelAwsS3Key"), FileIdempotentRepository.fileIdempotentRepository(new File("data", "repo.dat")))
.routeId("awsFileCopyRoute")
.log(LoggingLevel.INFO, "awsFileCopyRoute", "Camel AWS Key: ${header.CamelAwsS3Key}")
.to("file://" + Constants.REQ_FOLDER + "?fileName=${header.CamelAwsS3Key}");

In applicationContext.xml, i'm setting amazonS3Client's client bean as follows
<bean id="defaultAWSCredentialsProviderChain" class="com.amazonaws.auth.DefaultAWSCredentialsProviderChain" />
<bean id="clientConfiguration" class="com.amazonaws.ClientConfiguration" />

<bean id="client" class="com.amazonaws.services.s3.AmazonS3Client">
<constructor-arg ref="defaultAWSCredentialsProviderChain" />
<constructor-arg ref="clientConfiguration" />
</bean>

It's working first time downloading non-duplicate files from s3 to the REQ_FOLDER, but the issue is after 1 min, i've been getting following exception repeatedly.

2016-06-28 10:15:13,884 INFO AmazonHttpClient.executeHelper:638 - Unable to execute HTTP request: Timeout waiting for connection from pool
org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool
at org.apache.http.impl.conn.PoolingClientConnectionManager.leaseConnection(PoolingClientConnectionManager.java:230)
at org.apache.http.impl.conn.PoolingClientConnectionManager$1.getConnection(PoolingClientConnectionManager.java:199)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.amazonaws.http.conn.ClientConnectionRequestFactory$Handler.invoke(ClientConnectionRequestFactory.java:70)
at com.amazonaws.http.conn.$Proxy44.getConnection(Unknown Source)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:424)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)
at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:860)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:631)
at com.amazonaws.http.AmazonHttpClient.doExecute(AmazonHttpClient.java:400)
at com.amazonaws.http.AmazonHttpClient.executeWithTimer(AmazonHttpClient.java:362)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:311)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3673)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3626)
at com.amazonaws.services.s3.AmazonS3Client.listObjects(AmazonS3Client.java:693)
at org.apache.camel.component.aws.s3.S3Consumer.poll(S3Consumer.java:87)
at org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:175)
at org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:102)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)