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https://issues.apache.org/jira/browse/BEAM-975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16008117#comment-16008117
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ASF GitHub Bot commented on BEAM-975:
-------------------------------------
GitHub user jbonofre opened a pull request:
https://github.com/apache/beam/pull/3118
[BEAM-975] Improve default connection options, javadoc and style in
MongoDbIO
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- [X] Make sure the PR title is formatted like:
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- [X] Make sure tests pass via `mvn clean verify`.
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---
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jbonofre/beam BEAM-975-MONGODBIO-KEEPALIVE
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/beam/pull/3118.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3118
----
commit 433947565e259b7d618a21db9ccb3645d9561092
Author: Jean-Baptiste Onofré <[email protected]>
Date: 2017-05-12T13:21:49Z
[BEAM-975] Improve default connection options, javadoc and style in
MongoDbIO
----
> 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:
> 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)
> I suppose there must be a problem with Mongo connection which causes this
> issue.
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