camel ftp seems hang forever

Question

I got a camel route that is like hanged forever, not sure if it's Camel or Ftp client problem. The ftp component have soTimeout set as 60000. Any help is appreciated.

Version of components:
camel-ftp: 2.9.0
Commons Net: (2.2)

Thread dump:

"Camel (some-ftp-route) thread #57 - ftp://user@ftphost/folder" Id=338 in RUNNABLE (running in native)
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:264)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:306)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:158)
  - locked java.io.InputStreamReader@6a3f933a
at java.io.InputStreamReader.read(InputStreamReader.java:167)
at java.io.BufferedReader.fill(BufferedReader.java:136)
at java.io.BufferedReader.readLine(BufferedReader.java:299)
  - locked java.io.InputStreamReader@6a3f933a
at java.io.BufferedReader.readLine(BufferedReader.java:362)
at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:295)
at org.apache.commons.net.ftp.FTP._connectAction_(FTP.java:365)
at org.apache.commons.net.ftp.FTPClient._connectAction_(FTPClient.java:630)
at org.apache.commons.net.SocketClient.connect(SocketClient.java:164)
at org.apache.commons.net.SocketClient.connect(SocketClient.java:184)
at org.apache.camel.component.file.remote.FtpOperations.connect(FtpOperations.java:91)
at org.apache.camel.component.file.remote.RemoteFileConsumer.connectIfNecessary(RemoteFileConsumer.java:144)
at org.apache.camel.component.file.remote.RemoteFileConsumer.recoverableConnectIfNecessary(RemoteFileConsumer.java:123)
at org.apache.camel.component.file.remote.RemoteFileConsumer.prePollCheck(RemoteFileConsumer.java:56)
at org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:100)
at org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:139)
at org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:91)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

I'm just surprise that soTimeout didn't work. It hanged for almost 1 day...

Answer 1

This has been fixed in Camel 2.13.4, 2.14.2 and 2.15.0

The commit on Camel 2.15.0 is the following: https://github.com/apache/camel/commit/3774c01e71cf8715e90673328655fd426242e7ba