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https://issues.apache.org/activemq/browse/SM-915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_38955
]
Gert Vanthienen commented on SM-915:
------------------------------------
... but the original problem still isn't solved.
We get an additional stacktrace when ServiceMix is stopping and the problem
only appears to exist when the FTP server is IIS.
{code}
java.io.IOException: Fatal thread interruption during read.
at
org.apache.commons.net.telnet.TelnetInputStream.read(TelnetInputStream.java:344)
at
org.apache.commons.net.telnet.TelnetInputStream.read(TelnetInputStream.java:466)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:254)
at java.io.BufferedInputStream.read(BufferedInputStream.java:313)
at sun.nio.cs.StreamDecoder$CharsetSD.readBytes(StreamDecoder.java:411)
at sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:453)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:183)
at java.io.InputStreamReader.read(InputStreamReader.java:167)
at java.io.BufferedReader.fill(BufferedReader.java:136)
at java.io.BufferedReader.readLine(BufferedReader.java:299)
at java.io.BufferedReader.readLine(BufferedReader.java:362)
at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:264)
at org.apache.commons.net.ftp.FTP.getReply(FTP.java:605)
at
org.apache.commons.net.ftp.FTPClient.completePendingCommand(FTPClient.java:1253)
at
org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2400)
at
org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2364)
at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2141)
at
org.apache.servicemix.ftp.FtpPollerEndpoint.pollFileOrDirectory(FtpPollerEndpoint.java:210)
at
org.apache.servicemix.ftp.FtpPollerEndpoint.pollFileOrDirectory(FtpPollerEndpoint.java:202)
at
org.apache.servicemix.ftp.FtpPollerEndpoint.poll(FtpPollerEndpoint.java:77)
at
org.apache.servicemix.common.endpoints.PollingEndpoint$PollSchedulerTask$1.run(PollingEndpoint.java:155)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)
{code}
I've asked the commons mailing list for help on this one...
> FTP poller stalls with threads waiting on PlainSocketImpl.socketAccept()
> ------------------------------------------------------------------------
>
> Key: SM-915
> URL: https://issues.apache.org/activemq/browse/SM-915
> Project: ServiceMix
> Issue Type: Bug
> Components: servicemix-ftp
> Affects Versions: 3.1
> Reporter: Gert Vanthienen
> Attachments: SM-915.patch
>
>
> FTP poller threads stop working with the stack trace below, causing the FTP
> client pool to run out of connections
> {code}
> Name: pool-component.servicemix-ftp-thread-2
> State: RUNNABLE
> Total blocked: 78,430 Total waited: 4,771
> Stack trace:
> java.net.PlainSocketImpl.socketAccept(Native Method)
> java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> java.net.ServerSocket.implAccept(ServerSocket.java:450)
> java.net.ServerSocket.accept(ServerSocket.java:421)
>
> org.apache.commons.net.ftp.FTPClient._openDataConnection_(FTPClient.java:502)
>
> org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2390)
>
> org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2364)
> org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2141)
>
> org.apache.servicemix.ftp.FtpPollerEndpoint.pollFileOrDirectory(FtpPollerEndpoint.java:211)
>
> org.apache.servicemix.ftp.FtpPollerEndpoint.pollFileOrDirectory(FtpPollerEndpoint.java:203)
>
> org.apache.servicemix.ftp.FtpPollerEndpoint.poll(FtpPollerEndpoint.java:78)
>
> org.apache.servicemix.common.endpoints.PollingEndpoint$PollSchedulerTask$1.run(PollingEndpoint.java:155)
>
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
>
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
> java.lang.Thread.run(Thread.java:595)
> {code}
> See http://www.nabble.com/FTP-poller-stalls...-tf3490690s12049.html for more
> information
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