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ASF GitHub Bot commented on BEAM-975: ------------------------------------- Github user asfgit closed the pull request at: https://github.com/apache/beam/pull/3118 > Issue with MongoDBIO > -------------------- > > Key: BEAM-975 > URL: https://issues.apache.org/jira/browse/BEAM-975 > Project: Beam > Issue Type: Bug > Components: sdk-java-extensions > Reporter: Reza Nouri > Assignee: Jean-Baptiste Onofré > > It appears that there is an issue with MongoDBIO. I am using Apache Beam in a > REST service that reads data from Mongo. After a number of requests, mongoIO > throws the following exception: > {code} > com.mongodb.MongoSocketReadException: Prematurely reached end of stream > at com.mongodb.connection.SocketStream.read(SocketStream.java:88) > at > com.mongodb.connection.InternalStreamConnection.receiveResponseBuffers(InternalStreamConnection.java:491) > at > com.mongodb.connection.InternalStreamConnection.receiveMessage(InternalStreamConnection.java:221) > at > com.mongodb.connection.CommandHelper.receiveReply(CommandHelper.java:134) > at > com.mongodb.connection.CommandHelper.receiveCommandResult(CommandHelper.java:121) > at > com.mongodb.connection.CommandHelper.executeCommand(CommandHelper.java:32) > at > com.mongodb.connection.InternalStreamConnectionInitializer.initializeConnectionDescription(InternalStreamConnectionInitializer.java:83) > at > com.mongodb.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:43) > at > com.mongodb.connection.InternalStreamConnection.open(InternalStreamConnection.java:115) > at > com.mongodb.connection.UsageTrackingInternalConnection.open(UsageTrackingInternalConnection.java:46) > at > com.mongodb.connection.DefaultConnectionPool$PooledConnection.open(DefaultConnectionPool.java:381) > at > com.mongodb.connection.DefaultConnectionPool.get(DefaultConnectionPool.java:96) > at > com.mongodb.connection.DefaultConnectionPool.get(DefaultConnectionPool.java:82) > at > com.mongodb.connection.DefaultServer.getConnection(DefaultServer.java:72) > at > com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.getConnection(ClusterBinding.java:86) > at > com.mongodb.operation.OperationHelper.withConnectionSource(OperationHelper.java:237) > at > com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:212) > at com.mongodb.operation.FindOperation.execute(FindOperation.java:482) > at com.mongodb.operation.FindOperation.execute(FindOperation.java:79) > at com.mongodb.Mongo.execute(Mongo.java:772) > at com.mongodb.Mongo$2.execute(Mongo.java:759) > at com.mongodb.OperationIterable.iterator(OperationIterable.java:47) > at com.mongodb.FindIterableImpl.iterator(FindIterableImpl.java:143) > at > org.apache.beam.sdk.io.mongodb.MongoDbIO$BoundedMongoDbReader.start(MongoDbIO.java:359) > at > org.apache.beam.runners.direct.BoundedReadEvaluatorFactory$BoundedReadEvaluator.processElement(BoundedReadEvaluatorFactory.java:99) > at > org.apache.beam.runners.direct.TransformExecutor.processElements(TransformExecutor.java:154) > at > org.apache.beam.runners.direct.TransformExecutor.run(TransformExecutor.java:121) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > {code} > I suppose there must be a problem with Mongo connection which causes this > issue. -- This message was sent by Atlassian JIRA (v6.4.14#64029)