Selenium 3/TestNG giving N/A test result - java

I've recently upgraded to Selenium 3.141.59 from 2.47.0. Since the upgrade, our test suites have been receiving random N/A test results. It happens to about 1% of the tests and I have not been able to track down any meaningful logs to determine the cause.
We're using Selenium Grid Extras as our distribution.
Here is what a report looks like:
I am able to see that the test is being sent to the node by the hub:
14 Mar 2019 15:03:31 [pool-1-thread-291] INFO threads.SessionHistoryCallable - Notifying Remote Grid Extras node of new session with http://1xx.xxx.xxx.xxx:3000/grid_status?session=3e317470-0535-436d-8a70-02e43daff160
The only error I see in the Grid extras log is that the video callable fails out with the following error:
java.net.SocketException: Unexpected end of file from server
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.net.HttpURLConnection.getResponseCode(Unknown Source)
at com.groupon.seleniumgridextras.utilities.HttpUtility.getRequest(HttpUtility.java:60)
at com.groupon.seleniumgridextras.utilities.HttpUtility.getRequestAsString(HttpUtility.java:35)
at com.groupon.seleniumgridextras.utilities.HttpUtility.getRequestAsString(HttpUtility.java:29)
at com.groupon.seleniumgridextras.utilities.HttpUtility.getRequestAsString(HttpUtility.java:25)
at com.groupon.seleniumgridextras.videorecording.RemoteVideoRecorderHelper.updateLastAction(RemoteVideoRecorderHelper.java:109)
at com.groupon.seleniumgridextras.utilities.threads.video.RemoteVideoRecordingControlCallable.updateLastAction(RemoteVideoRecordingControlCallable.java:112)
at com.groupon.seleniumgridextras.utilities.threads.video.RemoteVideoRecordingControlCallable.call(RemoteVideoRecordingControlCallable.java:65)
at com.groupon.seleniumgridextras.utilities.threads.video.RemoteVideoRecordingControlCallable.call(RemoteVideoRecordingControlCallable.java:11)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
14 Mar 2019 15:03:31 [Forwarding ext. key 3e317470-0535-436d-8a70-02e43daff160 to http://1xx.xxx.xxx.xxx:5555/wd/hub at 3:03:31 PM] INFO video.RemoteVideoRecordingControlCallable - Creating new Video callable for proxy: http://1xx.xxx.xxx.xxx:5555, int key: 6a00e694-c2d2-47fd-807c-3bd23124810f, ex. key: 3e317470-0535-436d-8a70-02e43daff160, action: heartbeat, lastAction: /session/3e317470-0535-436d-8a70-02e43daff160/alert/text:
14 Mar 2019 15:03:31 [pool-1-thread-283] ERROR videorecording.RemoteVideoRecorderHelper - Error building URI for host: 1xx.xxx.xxx.xxx, port: 3000, session: 3e317470-0535-436d-8a70-02e43daff160, action: heartbeat, params: {session=3e317470-0535-436d-8a70-02e43daff160, action=heartbeat, description=/session/3e317470-0535-436d-8a70-02e43daff160/alert/text: }
java.net.SocketException: Unexpected end of file from server
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.net.HttpURLConnection.getResponseCode(Unknown Source)
at com.groupon.seleniumgridextras.utilities.HttpUtility.getRequest(HttpUtility.java:60)
at com.groupon.seleniumgridextras.utilities.HttpUtility.getRequestAsString(HttpUtility.java:35)
at com.groupon.seleniumgridextras.utilities.HttpUtility.getRequestAsString(HttpUtility.java:29)
at com.groupon.seleniumgridextras.utilities.HttpUtility.getRequestAsString(HttpUtility.java:25)
at com.groupon.seleniumgridextras.videorecording.RemoteVideoRecorderHelper.updateLastAction(RemoteVideoRecorderHelper.java:109)
at com.groupon.seleniumgridextras.utilities.threads.video.RemoteVideoRecordingControlCallable.updateLastAction(RemoteVideoRecordingControlCallable.java:112)
at com.groupon.seleniumgridextras.utilities.threads.video.RemoteVideoRecordingControlCallable.call(RemoteVideoRecordingControlCallable.java:65)
at com.groupon.seleniumgridextras.utilities.threads.video.RemoteVideoRecordingControlCallable.call(RemoteVideoRecordingControlCallable.java:11)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
I am at a complete loss and have not been able to find other with the N/A test result. Any help would be appreciated.

Related

Derby client jdbc driver connection error : Failed to create database 'sample'

I started the Derby Network Server like stated in this tutorial - here.
But when i typed:
ij> connect 'jdbc:derby://localhost:1527/sample;create=true',
I get the following error:
ERROR XJ041: DERBY SQL error: ERRORCODE: 40000, SQLSTATE: XJ041,
SQLERRMC: Faile d to create database 'sample', see the next exception
for details.::SQLSTATE: XB M0H
Any ideas how to fix this ?
derby.log contents:
Tue Oct 13 10:56:03 EEST 2015 : Apache Derby Network Server - 10.11.1.2 - (1629631) started and ready to accept connections on port 1527
Tue Oct 13 10:56:10 EEST 2015 Thread[DRDAConnThread_2,5,main] Cleanup action starting
ERROR XBM0H: Directory C:\Program Files\Java\jdk1.8.0_45\db\bin\sample cannot be created.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.services.monitor.StorageFactoryService$10.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.derby.impl.services.monitor.StorageFactoryService.createServiceRoot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.bootService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.createPersistentService(Unknown Source)
at org.apache.derby.impl.services.monitor.FileMonitor.createPersistentService(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.createPersistentService(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.createDatabase(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.EmbeddedDriver.connect(Unknown Source)
at org.apache.derby.impl.drda.Database.makeConnection(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.getConnFromDatabaseName(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.verifyUserIdPassword(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseSECCHK(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseDRDAConnection(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
Cleanup action completed
Tue Oct 13 10:56:10 EEST 2015 Thread[DRDAConnThread_2,5,main] Cleanup action starting
java.sql.SQLException: Failed to create database 'sample', see the next exception for details.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.createDatabase(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.EmbeddedDriver.connect(Unknown Source)
at org.apache.derby.impl.drda.Database.makeConnection(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.getConnFromDatabaseName(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.verifyUserIdPassword(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseSECCHK(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseDRDAConnection(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
Caused by: ERROR XJ041: Failed to create database 'sample', see the next exception for details.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(Unknown Source)
... 16 more
Caused by: ERROR XBM0H: Directory C:\Program Files\Java\jdk1.8.0_45\db\bin\sample cannot be created.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.services.monitor.StorageFactoryService$10.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.derby.impl.services.monitor.StorageFactoryService.createServiceRoot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.bootService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.createPersistentService(Unknown Source)
at org.apache.derby.impl.services.monitor.FileMonitor.createPersistentService(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.createPersistentService(Unknown Source)
... 13 more
============= begin nested exception, level (1) ===========
java.sql.SQLException: Directory C:\Program Files\Java\jdk1.8.0_45\db\bin\sample cannot be created.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.createDatabase(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.EmbeddedDriver.connect(Unknown Source)
at org.apache.derby.impl.drda.Database.makeConnection(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.getConnFromDatabaseName(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.verifyUserIdPassword(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseSECCHK(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseDRDAConnection(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
Caused by: ERROR XBM0H: Directory C:\Program Files\Java\jdk1.8.0_45\db\bin\sample cannot be created.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.services.monitor.StorageFactoryService$10.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.derby.impl.services.monitor.StorageFactoryService.createServiceRoot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.bootService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.createPersistentService(Unknown Source)
at org.apache.derby.impl.services.monitor.FileMonitor.createPersistentService(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.createPersistentService(Unknown Source)
... 13 more
============= end nested exception, level (1) ===========
============= begin nested exception, level (2) ===========
ERROR XBM0H: Directory C:\Program Files\Java\jdk1.8.0_45\db\bin\sample cannot be created.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.services.monitor.StorageFactoryService$10.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.derby.impl.services.monitor.StorageFactoryService.createServiceRoot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.bootService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.createPersistentService(Unknown Source)
at org.apache.derby.impl.services.monitor.FileMonitor.createPersistentService(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.createPersistentService(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.createDatabase(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.EmbeddedDriver.connect(Unknown Source)
at org.apache.derby.impl.drda.Database.makeConnection(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.getConnFromDatabaseName(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.verifyUserIdPassword(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseSECCHK(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseDRDAConnection(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
============= end nested exception, level (2) ===========
Cleanup action completed
Tue Oct 13 10:56:10 EEST 2015 Thread[DRDAConnThread_2,5,main] (DATABASE = sample), (DRDAID = {1}), Failed to create database 'sample', see the next exception for details.
Tue Oct 13 10:56:10 EEST 2015 Thread[DRDAConnThread_2,5,main] (DATABASE = sample), (DRDAID = {1}), Directory C:\Program Files\Java\jdk1.8.0_45\db\bin\sample cannot be created.

The log entry states:
Directory C:\Program Files\Java\jdk1.8.0_45\db\bin\sample cannot be created
So as far as I know this could be some permission issue with network server process not having enough rights to create a directory in C:\Program Files\Java\jdk1.8.0_45\db\bin\. You can try to run it as administrator.

From your exception stack trace it looks like your Derby network server process was started in the folder C:\Program Files\Java\jdk1.8.0_45\db\bin\ and the process does not seem to have the privileges to write the (Derby database) files in that folder. Try to find a folder where the Derby server process has the privilege to write files into. You can give specify windows drive letters and paths in the Derby connect URL. Just make sure to convert any back slashes \ to forward slashes / or escape them like this \\. So if for example if you know the Derby server process can write to d:\temp folder, then you can compose your command as
ij> connect jdbc:derby://localhost:1527/d:/temp/sample;create=true
or
ij> connect jdbc:derby://localhost:1527/d:\\temp\\sample;create=true

Beware substituted drives when using Derby - if you put your database on a substituted drive it won't work and you get confusing nio exceptions and class cast errors in the log. So this does not work:
connect 'jdbc:derby://localhost:1527/t:/DerbyDB;create=true';
where t is substituted. The same command pointed at drive c does work:
connect 'jdbc:derby://localhost:1527/c:/DerbyDB;create=true';
There is a discussion of these issues on the Derby site, - but maybe its not fixed for all cases? including where the database itself is on a substituted drive. I'm currently using version 10.10.2.0

Error getting response; java.net.SocketException: Connection reset

I am getting this error when i am trying to test the wcf service using SoapUI 4.5.1.
Error log is as below:
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:149)
at org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:110)
at org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:264)
at org.apache.http.impl.conn.LoggingSessionInputBuffer.readLine(LoggingSessionInputBuffer.java:115)
at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:98)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:252)
at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:281)
at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:247)
at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:219)
at com.eviware.soapui.impl.wsdl.support.http.HttpClientSupport$SoapUIHttpRequestExecutor.doReceiveResponse(HttpClientSupport.java:147)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:633)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:454)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
at com.eviware.soapui.impl.wsdl.support.http.HttpClientSupport$Helper.execute(HttpClientSupport.java:236)
at com.eviware.soapui.impl.wsdl.support.http.HttpClientSupport.execute(HttpClientSupport.java:345)
at com.eviware.soapui.impl.wsdl.submit.transports.http.HttpClientRequestTransport.sendRequest(HttpClientRequestTransport.java:241)
at com.eviware.soapui.impl.wsdl.WsdlSubmit.run(WsdlSubmit.java:123)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
If i run the code by keeping debug point, then able to see the response but it is not binding to SoapUI.
I even tried by seting Socket Timeout = 0.
Please suggest me what this message means

Client sender failed to send response message - ECM Documentum

I gets the following error while openning any MS doccument from WebTop and as the reuslt I nothing can open... :(
Jan 23, 2013 6:26:32 AM com.documentum.ucf.client.logging.impl.UCFLogger warn
WARNING: UCF Client Version 5.3.0.1
Jan 23, 2013 6:26:37 AM com.documentum.ucf.client.logging.impl.UCFLogger fatal
SEVERE: Client sender failed to send response message
com.documentum.ucf.common.transport.TransportStreamException: Client sender failed to send response message
at com.documentum.ucf.client.transport.impl.ClientSender.send(ClientSender.java:74)
at com.documentum.ucf.client.transport.impl.ClientSession.sendAndGetReceiver(ClientSession.java:590)
at com.documentum.ucf.client.transport.impl.ClientSession.handshake(ClientSession.java:673)
at com.documentum.ucf.client.transport.impl.ClientSession.handshake(ClientSession.java:653)
at com.documentum.ucf.client.transport.impl.ClientSession.run(ClientSession.java:270)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
at com.documentum.ucf.client.transport.impl.ClientNativeGAIRConnector.sendProlog(ClientNativeGAIRConnector.java:179)
at com.documentum.ucf.client.transport.impl.ClientSender.send(ClientSender.java:46)
... 4 more
Can't understand why the connection is refused.
I uses Windows 7 x64 , ECM Documentum 6.7 for , IE 8(for 32 and 64)/ IE9 (for 32 and 64), java 1.6. Is anybody can help me?
Thanks!

I installed the latest WebLogic version anf the error has gone.
Cheers!

Application upgrade throws NPE

I am using JarDiff+Pack200+Signed app/jars
I have application v1.0 that requires j2se version=1.6.0_16
After the 1st installation/download I deploy v2.0 that requires j2se version=1.7+
The upgrade fails on random jars with the Null Pointer Exception
The second attempt to start v2 is always successful.
I have tested it from command line with java 1.6.0_16 and 7u7.
Any ideas what it means?
java.lang.NullPointerException
at com.sun.deploy.net.DownloadEngine.applyPatch(Unknown Source)
at com.sun.deploy.cache.CacheEntry.processTempDataFile(Unknown Source)
at com.sun.deploy.cache.Cache.downloadResourceToTempFile(Unknown Source)
at com.sun.deploy.cache.Cache.downloadResourceToCache(Unknown Source)
at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
at com.sun.deploy.net.DownloadEngine._downloadCacheEntry(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.getResourceCacheEntry(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.getResourceCacheEntry(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)
at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

java.io.IOException: An existing connection was forcibly closed by the remote host

I have a server running Apache FTPServer. The FTP server is functioning well until recently some upload from the client started to fail with this error that is attached. I have increased the MaxIdleTimeout but is still encountering this error. Anybody has any idea to what actually generated this error?
16 Mar 22:19:30,792 WARN [pool-3-thread-10] [LoggingFilter->log()]:122 - EXCEPTION :
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:202)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:42)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:620)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:598)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:587)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:61)
at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:969)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
16 Mar 22:19:30,792 WARN [pool-3-thread-10] [LoggingFilter->log()]:122 - EXCEPTION :
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:202)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:42)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:620)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:598)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:587)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:61)
at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:969)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
16 Mar 22:19:30,792 ERROR[pool-3-thread-10] [DefaultFtpHandler->exceptionCaught()]:156 - Exception caught, closing session
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:202)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:42)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:620)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:598)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:587)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:61)
at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:969)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
16 Mar 22:19:30,792 ERROR[pool-3-thread-10] [DefaultFtpHandler->exceptionCaught()]:156 - Exception caught, closing session
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:202)
at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:42)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:620)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:598)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:587)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:61)
at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:969)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

It looks like what the error says, the server closed your connection. Typically this is as a result of inactivity on your end. If you don't keep talking to the server it will close your connection. If the connections idle you need to send a stream of NOOP commands to it to let it know your still there.

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