[
https://issues.apache.org/jira/browse/VFS-113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12510177
]
vikas commented on VFS-113:
---------------------------
rg.apache.commons.vfs.FileSystemException: Could not read file
"sftp://maan:[EMAIL PROTECTED]/transport/source/students1.txt".
at
org.apache.commons.vfs.provider.AbstractFileObject.getInputStream(AbstractFileObject.java:1163)
at
org.apache.commons.vfs.provider.DefaultFileContent.getInputStream(DefaultFileContent.java:360)
at
com.adeptia.indigo.services.transport.ftp.SecuredFtp.download(SecuredFtp.java:161)
at
com.adeptia.indigo.services.transport.ftp.FtpSource.createInputStream(FtpSource.java:179)
at
com.adeptia.indigo.services.transport.support.AbstractStreamSource.initialize(AbstractStreamSource.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:483)
at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(Unknown Source)
at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(Unknown Source)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown
Source)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
at
com.adeptia.indigo.utils.RemoteMBeanProxy$LocalHandler.invokeOperation(RemoteMBeanProxy.java:441)
at
com.adeptia.indigo.utils.RemoteMBeanProxy$Handler.invoke(RemoteMBeanProxy.java:294)
at $Proxy2.initialize(Unknown Source)
at com.adeptia.indigo.jelly.ActivityTag.runSync(ActivityTag.java:313)
at com.adeptia.indigo.jelly.ActivityTag.doTag(ActivityTag.java:250)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:278)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:133)
at
com.werken.blissed.jelly.JellyActivity.perform(JellyActivity.java:120)
at com.werken.blissed.ProcessEngine.enterState(ProcessEngine.java:391)
at
com.werken.blissed.ProcessEngine.followTransition(ProcessEngine.java:509)
at
com.werken.blissed.ProcessEngine.checkTransitions(ProcessEngine.java:458)
at com.werken.blissed.ProcessEngine.startProcess(ProcessEngine.java:366)
at com.werken.blissed.ProcessEngine.spawn(ProcessEngine.java:299)
at
com.adeptia.indigo.processflow.BlissedProcessFlow.execute(BlissedProcessFlow.java:159)
at
com.adeptia.indigo.transaction.IndigoTransaction.execute(IndigoTransaction.java:423)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:483)
at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(Unknown Source)
at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(Unknown Source)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown
Source)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown
Source)
at javax.management.remote.rmi.RMIConnectionImpl.access$100(Unknown
Source)
at
javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown
Source)
at
javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown
Source)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown
Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.commons.vfs.FileSystemException: Could not connect to
SFTP server at "sftp://maan:[EMAIL PROTECTED]/".
at
org.apache.commons.vfs.provider.sftp.SftpFileSystem.getChannel(SftpFileSystem.java:144)
at
org.apache.commons.vfs.provider.sftp.SftpFileObject.doGetInputStream(SftpFileObject.java:380)
at
org.apache.commons.vfs.provider.AbstractFileObject.getInputStream(AbstractFileObject.java:1159)
... 53 more
Caused by: com.jcraft.jsch.JSchException: java.io.IOException: inputstream is
closed
at com.jcraft.jsch.ChannelSftp.start(Unknown Source)
at com.jcraft.jsch.Channel.connect(Unknown Source)
at com.jcraft.jsch.Channel.connect(Unknown Source)
at
org.apache.commons.vfs.provider.sftp.SftpFileSystem.getChannel(SftpFileSystem.java:123)
... 55 more
Caused by: java.io.IOException: inputstream is closed
at com.jcraft.jsch.ChannelSftp.fill(Unknown Source)
at com.jcraft.jsch.ChannelSftp.header(Unknown Source)
... 59 more
Tim Rademacher is saying right i debug the code i found one thread opens the
connectionand return the input syteam stream.While the input
stream is processed ,another thread does anything with sftp. It gets the same
SftpChannel from the FileSystem, opens it (again?) and closes it, when it's
finished. Then the first thread seems to get the error.
I am facing this problem .
Please help me regards this.
What should i have done to resolve this problem
Thanks Vikas
> NullPointerException during getting InputStream from SftpFileObject
> -------------------------------------------------------------------
>
> Key: VFS-113
> URL: https://issues.apache.org/jira/browse/VFS-113
> Project: Commons VFS
> Issue Type: Bug
> Reporter: Tim Rademacher
> Fix For: 1.1
>
> Attachments: SftpFileObject.diff
>
>
> Hi,
> I experienced unregular NullPointerExceptions while getting an InputStream
> from an SftpFileObject. It only occures in a multithreading environment.
> I made a patch. By now it seems to work!
> Regards,
> Tim
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