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List: jakarta-commons-dev
Subject: [jira] Commented: (NET-160) FTP Client API Hangs - Attached
From: "sddoubt (JIRA)" <jira () apache ! org>
Date: 2009-10-30 13:46:59
Message-ID: 280985067.1256910419996.JavaMail.jira () brutus
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[ https://issues.apache.org/jira/browse/NET-160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771944#action_12771944 \
]
sddoubt commented on NET-160:
-----------------------------
I am using commons-net 1.1 and am facing an issue similar to the one mentioned in \
this thread.
Trace:
java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java(Compiled Code))
at java.net.SocketInputStream.read(SocketInputStream.java(Compiled Code))
at sun.nio.cs.StreamDecoder$ConverterSD.implRead(StreamDecoder.java(Compiled Code))
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java(Compiled Code))
at java.io.InputStreamReader.read(InputStreamReader.java(Compiled Code))
at java.io.BufferedReader.fill(BufferedReader.java(Compiled Code))
at java.io.BufferedReader.readLine(BufferedReader.java(Compiled Code))
at java.io.BufferedReader.readLine(BufferedReader.java(Inlined Compiled Code))
at org.apache.commons.net.ftp.DefaultFTPFileListParser.parseFileList(DefaultFTPFileListParser.java(Compiled \
Code)) at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java(Compiled \
Code)) at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java(Inlined \
Compiled Code)) at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java(Inlined \
Compiled Code))
during listFiles method call.
I want to know if this bug may be related to the one discussed in this thread.
Has been fixed in any later version.
Also, if not what workaround can be used to avoid this issue?
Thanks for ur help on this.
> FTP Client API Hangs - Attached Scenario.
> -----------------------------------------
>
> Key: NET-160
> URL: https://issues.apache.org/jira/browse/NET-160
> Project: Commons Net
> Issue Type: Bug
> Affects Versions: 1.4
> Environment: Suse Enterprise Linux 9.0, Intel
> Reporter: Lvenkataraman
> Attachments: __getReply, Util.java
>
>
> FTP client hangs with the following error. Here is the truss output. The client \
> hangs indefinitely and no work is being done other than this error when you truss \
> the process. I use Java 1.5 to run this. We wrote a long-running ftp daemon and \
> this happens after 20-23 hours of continuous running. Here is the code to pull \
> files from the ftp server. This one lists files that are received after this \
> particular "incal" time (currently it lists but the intention is to implement an \
> incremental download). We initially thought doing periodic noop would keep the \
> client alive by sending dummy commands to the server. But we found this probelm \
> still occurs. public void ListIncrementalFiles (String directory, Calendar incal)
> {
> try
> {
> FTPFile[] files = listFiles(directory);
>
> int total_files = 0;
>
> System.out.println("FileName\tFileSize\t\tDate Time Stamp");
> for (int i = 0; i < files.length; i++)
> {
>
> FTPFile file = files[i];
> if ((i % 1000) == 0)
> {
> System.out.println("noop occurred at this instance---> " + i + "\n");
> noop();
> }
>
> if (file.isFile())
> {
> Calendar c = file.getTimestamp();
>
> if (c.after(incal) || c.equals(incal))
> {
>
> System.out.println(file.getName() + "\t" + file.getSize() + "\t\t" + \
> c.getTime()); total_files++;
> }
> }
>
> }
> System.out.println("Total Files in the listing ----> " + total_files);
> }
> catch (Exception e)
> {
> System.out.println("FTP Getfiles exception occured");
> e.printStackTrace();
> }
>
> }
> ---------------------------------------------------------------------------------------------------------------------------------Truss \
> output \
> begins--------------------------------------------------------
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /6: lwp_cond_wait(0x00035F08, 0x00035EF0, 0xB477FBE0, 0) Err#62 ETIME
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /9: lwp_park(0x00000000, 0) (sleeping...)
> /3: lwp_cond_wait(0x000B77C0, 0x000B77A8, 0x00000000, 0) (sleeping...)
> /8: lwp_cond_wait(0x0014A908, 0x0014A8F0, 0x00000000, 0) (sleeping...)
> /10: lwp_cond_wait(0x000366E8, 0x000366D0, 0x00000000, 0) (sleeping...)
> /1: pollsys(0x00000000, 0, 0xFFBFEB60, 0x00000000) (sleeping...)
> /11: lwp_cond_wait(0x00036778, 0x00036760, 0x00000000, 0) (sleeping...)
> /4: lwp_cond_wait(0x000B77C0, 0x000B77A8, 0x00000000, 0) (sleeping...)
> /12: lwp_cond_wait(0x00036778, 0x00036760, 0x00000000, 0) (sleeping...)
> /2: lwp_cond_wait(0x000B77C0, 0x000B77A8, 0x00000000, 0) (sleeping...)
> /7: lwp_cond_wait(0x00149F98, 0x00149F80, 0x00000000, 0) (sleeping...)
> /5: lwp_cond_wait(0x000B77C0, 0x000B77A8, 0x00000000, 0) (sleeping...)
> /13: lwp_cond_wait(0x00034958, 0x00034940, 0x00000000, 0) (sleeping...)
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /6: lwp_cond_wait(0x00035F08, 0x00035EF0, 0xB477FBE0, 0) Err#62 ETIME
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /6: lwp_cond_wait(0x00035F08, 0x00035EF0, 0xB477FBE0, 0) Err#62 ETIME
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /6: lwp_cond_wait(0x00035F08, 0x00035EF0, 0xB477FBE0, 0) Err#62 ETIME
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /6: lwp_cond_wait(0x00035F08, 0x00035EF0, 0xB477FBE0, 0) Err#62 ETIME
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /6: lwp_cond_wait(0x00035F08, 0x00035EF0, 0xB477FBE0, 0) Err#62 ETIME
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /6: lwp_cond_wait(0x00035F08, 0x00035EF0, 0xB477FBE0, 0) Err#62 ETIME
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> /14: pollsys(0x00000000, 0, 0xB3F7FC10, 0x00000000) = 0
> ------------------------------------------------------------------------------------------Truss \
> output ends-------------------------------------------------------------------------------------------
>
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