Spring Batch issue : "Problems occurred while synchronizing remote to local directory"

Question

We PUT file on some SFTP server and then run spring batch.when spring batch run below steps were executed.

1. pick file from FTP location

2. process the file.

3. delete file.

we are facing below exception while spring batch performing above steps.

ERROR org.springframework.integration.handler.LoggingHandler: 140 - org.springframework.integration.MessagingException: Problem occurred while synchronizing remote to local directory
            at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:189)
            at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.receive(AbstractInboundFileSynchronizingMessageSource.java:162)
            at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:111)
            at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:184)
            at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:51)
            at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:143)
            at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:141)
            at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:273)
            at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52)
            at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:48)
            at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
            at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:268)
            at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:53)
            at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
            at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
            at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
            at java.util.concurrent.FutureTask.run(FutureTask.java:138)
            at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
            at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
            at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
            at java.lang.Thread.run(Thread.java:662)
        Caused by: org.springframework.integration.MessagingException: Failed to execute on session
            at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:306)
            at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:163)
            ... 21 more
        Caused by: org.springframework.core.NestedIOException: Failed to remove file: 2: Specified file path is invalid.
            at org.springframework.integration.sftp.session.SftpSession.remove(SftpSession.java:83)
            at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.copyFileToLocalDirectory(AbstractInboundFileSynchronizer.java:230)
            at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.access$100(AbstractInboundFileSynchronizer.java:59)
            at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer$1.doInSession(AbstractInboundFileSynchronizer.java:172)
            at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer$1.doInSession(AbstractInboundFileSynchronizer.java:163)
            at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:297)
            ... 22 more

Answer 1

Perhaps a security issue - maybe you don't have delete permissions.

The exact same path is used for the fetch and when deleting (if configured to delete the remote file after retrieval). Clearly the fetch worked ok because we're now in the delete phase.

You should consult the server logs.